HyperWorks Release Notes

HyperWorks Release Notes
HyperWorks 14.0
Release Notes
HyperWorks is a division of Altair
altairhyperworks.com
Altair® HyperWorks®
A Platform for Innovation®
Copyright© 1986-2015 Altair Engineering Inc. All Rights Reserved.
Copyright© Altair Engineering Inc. All Rights Reserved for:
HyperMesh® 1990-2015; HyperCrash® 2001-2015; OptiStruct® 1996-2015; RADIOSS® 1986-2015; HyperView® 1999-2015;
HyperView Player® 2001-2015; HyperStudy® 1999-2015; HyperGraph® 1995-2015; MotionView® 1993-2015; MotionSolve®
2002-2015; HyperForm® 1998-2015; HyperXtrude® 1999- 2015; Process Manager™ 2003-2015; Templex™ 1990-2015;
TextView™ 1996-2015; MediaView™ 1999-2015; TableView™ 2013-2015; BatchMesher™ 2003-2015; HyperMath® 2007-2015;
HyperWeld® 2009-2015; HyperMold® 2009-2015; Manufacturing Solutions™ 2005-2015; solidThinking® 1993-2015; solidThinking
Inspire® 2009-2015; solidThinking Evolve® 1993-2015; Durability Director™ 2009-2015; Suspension Director™ 2009-2015;
AcuSolve® 1997-2015; AcuConsole® 2006-2015; SimLab® 2004-2015; Virtual Wind Tunnel™ 2012-2015; MDS™ 2011-2015 and
FEKO™ (©1999-2014 Altair Development S.A. (Pty) Ltd.; ©2014-2015 Altair Engineering, Inc.); MDS™ 2011-2015 and VisSim™
1989-2015.
Other Altair software applications include:
Altair PBS Works™: Compute Manager™ 2007-2015; Display Manager™ 2007-2015; PBS™ 1994-2015; PBS Professional®
1994-2015; PBS Application Services™ 2008-2015; PBS Analytics™ 2007-2015; and PBS Desktop™ 2007-2012; PBS Portal™
2007-2011; e-BioChem™ 2007-2013; e-Compute™ 2000-2007; e-Render™ 2006-2010; OpenPBS® 1994-2003 and Personal
PBS® 2007-2012.
Altair Simulation Cloud Suite: Simulation Manager™ 2003-2015; Compute Manager™ 2003-2015; Display Manager™ 2003–
2015; and Process Manager™ 2003-2015.
Altair Packaged Solution Offerings (PSOs) Copyright© 2008-2015
Automated Reporting Director™ 2008-2015; Impact Simulation Director™ 2010-2015; Model Mesher Director™ 2010-2015; Model
Verification Director™ 2013-2015; Squeak and Rattle Director™ 2012-2015; Virtual Gauge Director™ 2012-2015; Weld
Certification Director™ 2014-2015
Altair intellectual property rights are protected under U.S. and international laws and treaties. Additionally, Altair software is
protected under patent #6,859,792 and other patents pending. All other marks are the property of their respective owners.
ALTAIR ENGINEERING INC. Proprietary and Confidential. Contains Trade Secret Information.
Not for use or disclosure outside of Altair and its licensed clients. Information contained in Altair software shall not be decompiled,
disassembled, “unlocked”, reverse translated, reverse engineered, or publicly displayed or publicly performed in any manner.
Usage of the software is only as explicitly permitted in the end user software license agreement. Copyright notice does not imply
publication.
Third party software licenses
Software Security Measures:
Altair Engineering Inc. and its subsidiaries and affiliates reserve the right to embed software security mechanisms in the Software
for the purpose of detecting the installation and/or use of illegal copies of the Software. The Software may collect and transmit nonproprietary data about those illegal copies. Data collected will not include any customer data created by or used in connection with
the Software and will not be provided to any third party, except as may be required by law or legal process or to enforce our rights
with respect to the use of any illegal copies of the Software. By using the Software, each user consents to such detection and
collection of data, as well as its transmission and use if an illegal copy of the Software is detected. No steps may be taken to avoid
or detect the purpose of any such security mechanisms.
Altair Engineering Support Contact Information
Web site
www.altairhyperworks.com
Location
Telephone
e-mail
Australia
64.9.413.7981
[email protected]
Brazil
55.11.3884.0414
[email protected]
Canada
416.447.6463
[email protected]
China
86.400.619.6186
[email protected]
France
33.1.4133.0992
[email protected]
Germany
49.7031.6208.22
[email protected]
India
91.80. 6629.4500
1.800.425.0234 (toll free)
[email protected]
Italy
39.800.905.595
[email protected]
Japan
81.3.5396.2881
[email protected]
Korea
82.70.4050.9200
[email protected]
Mexico
55.56.58.68.08
[email protected]
New Zealand
64.9.413.7981
[email protected]
North America
248.614.2425
[email protected]
Scandinavia
46.46.460.2828
[email protected]
South Africa
27 21 8311500
[email protected]
United Kingdom
01926.468.600
[email protected]
In addition, the following countries have resellers for Altair Engineering: Colombia, Czech Republic, Ecuador, Israel, Russia,
Netherlands, Turkey, Poland, Singapore, Vietnam, Indonesia
Official offices with resellers: Canada, China, France, Germany, India, Malaysia, Italy, Japan, Korea, Spain, Taiwan, United
Kingdom, USA
HYPERMESH 14.0 RELEASE NOTES ............................................................................................................................................ 13
HYPERVIEW 14.0 RELEASE NOTES ............................................................................................................................................. 36
HYPERGRAPH 14.0 RELEASE NOTES .......................................................................................................................................... 45
MOTIONVIEW 14.0 RELEASE NOTES ......................................................................................................................................... 57
HIGHLIGHTS ..................................................................................................................................................................................... 57
3D CONTACT .................................................................................................................................................................................... 58
NONLINEAR FINITE ELEMENTS .............................................................................................................................................................. 63
ADVANCED DRIVER AND ROAD VEHICLE SIMULATION ............................................................................................................................... 66
OTHER MOTIONVIEW ENHANCEMENTS ................................................................................................................................................. 69
RESOLVED ISSUES .............................................................................................................................................................................. 78
KNOWN ISSUES ................................................................................................................................................................................. 83
HYPERCRASH 14.0 RELEASE NOTES ........................................................................................................................................... 85
BASICFEA 14.0 RELEASE NOTES................................................................................................................................................. 90
AUTOMATE 14.0 RELEASE NOTES ............................................................................................................................................. 94
HYPERMATH 14.0 RELEASE NOTES ........................................................................................................................................... 96
HYPERSTUDY 14.0 RELEASE NOTES ........................................................................................................................................... 98
HYPERFORM 14.0 RELEASE NOTES ......................................................................................................................................... 101
HYPERXTRUDE 14.0 RELEASE NOTES ...................................................................................................................................... 104
CFD 14.0 RELEASE NOTES ....................................................................................................................................................... 109
AEROSPACE 14.0 RELEASE NOTES ........................................................................................................................................... 117
CRASH 14.0 RELEASE NOTES ................................................................................................................................................... 126
CAD AND SOLVER INTERFACES ............................................................................................................................................... 133
ABAQUS INTERFACE 14.0 RELEASE NOTES .............................................................................................................................. 134
ANSYS INTERFACE 14.0 RELEASE NOTES ................................................................................................................................. 137
CAD INTERFACES 14.0 RELEASE NOTES ................................................................................................................................... 142
EXODUS INTERFACE 14.0 RELEASE NOTES .............................................................................................................................. 144
LS-DYNA INTERFACE 14.0 RELEASE NOTES .............................................................................................................................. 145
NASTRAN INTERFACE 14.0 RELEASE NOTES ............................................................................................................................ 150
PAM CRASH 2G INTERFACE 14.0 RELEASE NOTES ................................................................................................................... 153
RADIOSS INTERFACE 14.0 RELEASE NOTES.............................................................................................................................. 155
OPTISTRUCT INTERFACE 14.0 RELEASE NOTES ........................................................................................................................ 157
SAMCEF INTERFACE 14.0 RELEASE NOTES .............................................................................................................................. 161
OPTISTRUCT 14.0 RELEASE NOTES .......................................................................................................................................... 165
STIFFNESS, STRENGTH AND STABILITY .................................................................................................................................................. 166
NOISE AND VIBRATIONS .................................................................................................................................................................... 175
HyperWorks Desktop 14.0 Release Notes
1
Proprietary Information of Altair Engineering
KINEMATICS AND DYNAMICS.............................................................................................................................................................. 178
THERMAL ANALYSIS ......................................................................................................................................................................... 179
GENERAL UPDATES .......................................................................................................................................................................... 180
OPTIMIZATION ................................................................................................................................................................................ 182
SOLVERS ........................................................................................................................................................................................ 189
NONLINEAR DYNAMIC ANALYSIS......................................................................................................................................................... 190
RESOLVED ISSUES ............................................................................................................................................................................ 191
RADIOSS 14.0 RELEASE NOTES ................................................................................................................................................ 193
CRASH AND SAFETY .......................................................................................................................................................................... 194
FORMING ....................................................................................................................................................................................... 201
BLAST SIMULATION .......................................................................................................................................................................... 203
GENERAL UPDATES .......................................................................................................................................................................... 205
RESOLVED ISSUES ............................................................................................................................................................................ 214
MOTIONSOLVE 14.0 RELEASE NOTES ...................................................................................................................................... 215
SOLVER ENHANCEMENTS .................................................................................................................................................................. 221
ADAMS COMPATIBILITY .................................................................................................................................................................. 226
RESOLVED ISSUES ............................................................................................................................................................................ 228
KNOWN ISSUES ............................................................................................................................................................................... 232
HYPERXTRUDE SOLVER 14.0 RELEASE NOTES ......................................................................................................................... 233
HYPERXTRUDE FOR METAL EXTRUSION ................................................................................................................................................ 233
HYPERXTRUDE FOR POLYMER EXTRUSION ............................................................................................................................................ 235
HYPERXTRUDE FOR RESIN TRANSFER MOLDING .................................................................................................................................... 236
ACUSOLVE 14.0 RELEASE NOTES ............................................................................................................................................. 237
MULTIBODY SOLUTIONS 14.0 RELEASE NOTES ....................................................................................................................... 252
3D CONTACT .................................................................................................................................................................................. 253
Pre-processing ........................................................................................................................................................................ 253
Solution .................................................................................................................................................................................. 257
Post-processing ...................................................................................................................................................................... 261
Change in Behavior ................................................................................................................................................................ 263
NONLINEAR FINITE ELEMENTS ............................................................................................................................................................ 264
Pre-processing ........................................................................................................................................................................ 264
Solution .................................................................................................................................................................................. 267
Post-processing ...................................................................................................................................................................... 271
CMS Flexible Body vs. NLFE Body: Pre-Processing Comparison .............................................................................................. 272
CMS Flexible Body vs. NLFE Body: Solution Comparison ........................................................................................................ 272
CMS Flexible Body vs. NLFE Body: Post-Processing Comparison ............................................................................................ 273
ADVANCED DRIVER AND ROAD VEHICLE SIMULATION ............................................................................................................................. 274
Driver ...................................................................................................................................................................................... 274
Road ....................................................................................................................................................................................... 275
OTHER MOTIONSOLVE ENHANCEMENTS .............................................................................................................................................. 277
Geometric Stiffening for CMS Flexible Bodies ........................................................................................................................ 278
Compatibility with ADAMS Language .................................................................................................................................... 283
Resolved Issues ....................................................................................................................................................................... 284
Known Issues .......................................................................................................................................................................... 288
HyperWorks Desktop 14.0 Release Notes
2
Proprietary Information of Altair Engineering
OTHER MOTIONVIEW ENHANCEMENTS ............................................................................................................................................... 289
Resolved Issues ....................................................................................................................................................................... 296
Known Issues .......................................................................................................................................................................... 297
OTHER AUTO SOLUTION ENHANCEMENTS ............................................................................................................................................ 299
Resolved Issues ....................................................................................................................................................................... 302
Known Issues .......................................................................................................................................................................... 306
OPTISTRUCT ENHANCEMENTS PERTINENT TO MULTIBODY SIMULATIONS ................................................................................................... 307
INSPIRE 2016 RELEASE NOTES ................................................................................................................................................ 309
EVOLVE 2016 RELEASE NOTES ................................................................................................................................................ 313
FEKO 14.0 RELEASE NOTES ..................................................................................................................................................... 318
ACUFIELDVIEW 14.0 RELEASE NOTES ...................................................................................................................................... 323
SIMLAB 13.3 RELEASE NOTES ................................................................................................................................................. 331
VIRTUAL WIND TUNNEL 13.1 RELEASE NOTES ........................................................................................................................ 338
HYPERXTRUDE 2015.1 RELEASE NOTES ................................................................................................................................... 341
SOFTWARE AND HARDWARE 14.0 RELEASE NOTES ................................................................................................................ 343
HYPERWORKS LICENSING 14.0 RELEASE NOTES ...................................................................................................................... 346
HyperWorks Desktop 14.0 Release Notes
3
Proprietary Information of Altair Engineering
HyperWorks 14.0 Release Highlights
Altair® HyperWorks® is the most comprehensive, open architecture CAE simulation platform in the
industry. It offers the best technologies to design and optimize high performance, weight efficient, and
innovative products.
HyperWorks includes best-in-class modeling, linear and nonlinear analyses, structural and system-level
optimization, fluid and multibody dynamics simulation, electromagnetic compatibility (EMC), multiphysics analysis, model-based development, and data management solutions.
Our goal at Altair has always been to provide the best technology at the highest value to our
customers, and the HyperWorks® 14.0 release is no exception.
The suite offers hundreds of new features, enabling you to continue to develop better products in
shorter timescales. New and enhanced capabilities include:
•
Efficient parts and assemblies management
•
Extremely fast graphic engine, to handle even the largest models
•
New solutions for linear and nonlinear structural analysis
•
Multiphysics analysis structural, electromagnetic and fluid flow phenomenon
•
Optimization-based analysis and system-level design exploration
The following sections provide a quick overview of new and enhanced capabilities included in the new
release.
HyperWorks Desktop 14.0 Release Notes
4
Proprietary Information of Altair Engineering
Modeling and Visualization Capabilities
Model Assembly
A new part-based workflow is available, bringing modularization to HyperMesh. One of its primary
benefits is that it promotes flow of data from PDM to HyperMesh. Full representation management
and configuration management are enabled with new data redundancy checks to ensure model
integrity. The data can be read indirectly from PDM, via PLMXML, so the hierarchical structure is
read and populated within HyperMesh. With the part-based workflow, the possibility of a common
model approach is enabled.
Meshing and Connectors
A new browser-based workflow for meshing has been implemented. This workflow utilizes the new
"mesh control" entity. This new entity enables the definition of formal, centralized, reusable
meshing scenarios.
The Connector Entity Editor (CEE) can be found in the lower part of the Connector browser and gives
easy access to all important connector attributes of currently selected connectors. With the CEE it’s
now possible to precisely change single attributes and realize various connectors at once. All
attributes are described with tooltips.
Undo/Redo
A new history mechanism has been introduced, enabling undo/redo operations for most of the
geometry and meshing operations. The functionality is particularly focused on entity creation and
editing.
HyperWorks Automate
Users with various levels of expertise can benefit from Automate. Engineers and analysts can run
processes more efficiently. Methods teams and administrators can provide their customers with
easy-to-use tools that incorporate best practices and advanced expertise.
Automate is a new and advanced utility in the HyperWorks Desktop environment for easily creating
and executing process-based workflows. It allows users to add blocks, which can consist of several
individually programmed tasks. The environment provides drag and drop functionality to arrange
these blocks into a desired process.
Performance
HyperWorks 14.0 is extremely fast, handling even the largest models, paving the road to photorealistic visualization of FE-models. Performance increase - compared to the previous HyperWorks
13.0 version - is up to 15x for large FE models with solid elements and up to 60x for geometry
models, while using less hardware memory.
HyperWorks Desktop 14.0 Release Notes
5
Proprietary Information of Altair Engineering
Analysis and Optimization
HyperWorks solver technology includes Finite-Element-Based Linear and Nonlinear Structural Analysis,
design and optimization capabilities (OptiStruct), Finite-Element-Based Highly Nonlinear Structural
Analysis under dynamic loading (RADIOSS), Thermal and Fluid Analysis (AcuSolve), computational
electromagnetics (FEKO) as well as multibody simulation (MotionSolve). Combined with design
optimization technology and multi-physics capabilities, HyperWorks enables users to drive the productdevelopment process and make reliable decisions based on high-quality results.
With the HyperWorks 14.0 release, Altair continues a successful mix by adding new functionality to
accommodate customer needs and latest research results, combined with usability enhancements and
performance improvements by leveraging the latest computing technology.
Optimization
Many new capabilities have been introduced to reinforce Altair’s leadership in simulation-driven
design and design-oriented, optimization-enabled solutions:
•
Concept Design: The greatest flexibility to impact the design of a product is at the
conceptualization phase. To take advantage of this flexibility, methods aimed at driving design
concepts should be employed at this stage. OptiStruct enhancements in this area include a new
alternate optimization algorithm, 3D topology optimization for RADIOSS nonlinear analysis.
•
Lattice Structure Design: A first-to-market solution for the design and optimization of lattice
structures has been implemented in OptiStruct. Lattice structures are frequently used in
designs for 3D printing. Based on well-established topology optimization technology, this novel
solution is able to provide design concepts for a blended solid-and-lattice type structure.
•
Composites Layout: In addition to the several enhancements included in OptiStruct and
RADIOSS for composites design and analysis, HyperWorks now includes Multiscale Designer,
a mathematically rigorous practical tool for the seamless integration of modeling, simulation,
testing, and optimization of engineered products involving materials of multiple spatial and
temporal scales.
Broad Portfolio of Physics
An expanded number of solution types and material models broaden HyperWorks’ multi-physics
offering. Here are some highlights:
•
Contact: New contact algorithms have been implemented in OptiStruct. Finite sliding
contact has been shown to be very effective modeling gears and other sliding problems. The
fast small sliding contact algorithm provides up to 10 times faster analysis while giving same
accuracy as the full-fledged iterative solution. MotionSolve now provides a new 3D rigid-torigid contact which is robust and fast.
•
Large Displacement Finite Elements: OptiStruct capabilities are more complete including
now 1D elements like beams, bars, and bushings as well as follower forces.
•
Vibrations and Acoustics: OptiStruct solution speed has been further improved. Unique
techniques like One-Step Transfer Path Analysis as well as BIOT materials have been made
more robust and user friendly.
HyperWorks Desktop 14.0 Release Notes
6
Proprietary Information of Altair Engineering
•
Crash Worthiness and Impact: Major improvements for airbags, in particular RADIOSS
Starter capability to generate automatic Finite Volume Mesh for folded complex airbags to
account for internal airbag topology.
•
Heat Transfer: In OptiStruct, transient temperature at multiple time steps can now be
applied in thermal-structure coupling analysis, Thermal contact has been enhanced.
•
Materials and Failure: The library of material and failure models in RADIOSS has been
further expanded. Thermal expansion and damage output are now possible. XFEM has been
expanded to more use cases.
•
Advanced Driver and Road: Automotive multibody simulation library for MotionSolve has
been expanded for full vehicle simulations using advanced driver and road models.
•
Turbulence Modeling – AcuSolve k-ω was improved to be more stable and accurate.
Performance
Altair HyperWorks utilizes parallel computer architectures for enhanced solvers performance:
•
High Scalability on CPU: RADIOSS scalability of up 8,192 cores and beyond on a 15
million-element model has been shown. OptiStruct parallelism has been further developed.
•
Fast Eigen Solutions: OptiStruct normal modes and frequency response analysis has been
made faster through further improvement of numerical solver capabilities.
Computational Electromagnetics
FEKO joins the Altair family and is included as part of the HyperWorks simulation software platform.
In the 14.0 release FEKO boasts numerous extensions to both its user interface and electromagnetic
solvers. Highlights include curvilinear segments, complete application automation for CADFEKO,
script recording and extensions to higher order basis functions (HOBF).
The GUI components have been extended to support all new features and solution techniques in the
FEKO solver. In addition to supporting the new solver features, numerous other features and
improvements have also been implemented.
HyperWorks Desktop 14.0 Release Notes
7
Proprietary Information of Altair Engineering
Value-based Business Model
HyperWorks stretches your software dollar through a patented, value-based license management
system called HyperWorks Units, which allows metered usage of the entire suite of products. This
value-based licensing model has been extended to partners’ products, providing a dynamic and ondemand platform which now also includes cloud-based solutions.
When you sign up for HyperWorks, you become eligible to download our entire suite of Altair Partner
Alliance solutions. We have revolutionized the way you obtain software by eliminating the hurdles that
prevent you from getting what you need. So at virtually no extra cost, your team can access a growing
library of solutions that complement our own technology using a single pool of recyclable units.
HyperWorks Unlimited Solver Node
An alternative solver licensing scheme has been implemented. This new scheme is compute nodebased versus the traditional licensing per job. The solver license is associated with the total number
of compute nodes used simultaneously by all solver jobs. This provides a great value for massive
use of HyperWorks solvers.
Hosted HyperWorks Units (HHWU)
•
Altair's innovative HyperWorks licensing model hosts licenses on the cloud, called Hosted
HyperWorks Units (HHWU). This offering provides users with instant portability to their
HyperWorks units, eliminating the IT burden of maintaining a license server in-house.
•
Continuing the legacy, HyperWorks 14.0 expands the availability of HHWU to the nextgeneration, cloud-based licensing system. In this new system, HyperWorks can be
accessed from anywhere.
•
HHWU allows increased portability and scalability and reduced IT burden in maintaining a
license server.
•
Please contact an Altair representative to learn how to take advantage of the added value
and how your current licenses can be moved to the cloud.
Cloud Solutions
•
Altair's CAE cloud solutions capitalize on our unique position in the industry and experience
in offering engineers and scientists the flexibility to run simulations. Users are able to run
CAE simulations instantly on their desktops anywhere by leveraging our Hosted HyperWorks
Units (HHWU). Customers can further extend their experience with enterprise capabilities to
scale on-premise (HyperWorks Unlimited – Physical Appliance) or scale out to the public
cloud (HyperWorks Unlimited – Virtual Appliance), while simultaneously keeping track of the
entire simulation data with Altair's Simulation Cloud Suite. In all of the cases, users are
provided with a comprehensive and intuitive web-based interface for managing data and
knowledge in the cloud.
•
Altair's technical cloud solutions address the unique needs of enterprises by simplifying
access to an HPC infrastructure, allowing engineers and scientists to focus on their work
rather than deciding how and where their jobs are executed.
HyperWorks Desktop 14.0 Release Notes
8
Proprietary Information of Altair Engineering
Partner Alliance
The Altair Partner Alliance continues to expand its portfolio of third-party technology.
•
Applications from upwards of 40 strategic partners can be directly accessed with
HyperWorks Units in the following domains: durability and fatigue, computational fluid
dynamics, impact analysis, noise-vibration-harshness, electromagnetic analysis, 1D
systems simulation, injection molding simulation, process structure interaction, composite
modeling, stress analysis, material libraries, thermal analysis, complexity management,
casting simulation, multibody dynamics analysis, project management, rendering, and rapid
prototyping.
HyperWorks Desktop 14.0 Release Notes
9
Proprietary Information of Altair Engineering
Ideation and Conceptual Design
solidThinking Inspire
solidThinking Inspire enables design engineers, product designers, and architects to create and
investigate structurally efficient concepts quickly and easily. Inspire enhances the design process by
generating a new material layout within a package space using the loads as an input. The software
is easy to learn and works with existing CAD tools to help design structural parts right the first time,
reducing costs, development time, material consumption, and product weight.
Key updates for Inspire 2015 include:
•
Fasteners and Joints: Connect multiple parts in a model using bolts, screws, pins, or sliding
pins. Inspire’s workflow identifies areas in the model with aligned holes to make the process
easy and intuitive.
•
Contacts: Users can now designate whether neighboring parts should be bonded, contacting, or
have no contact for more realistic optimization results.
•
Gravity Loads: G loads can now be added to a model through the Model Browser.
•
Updated User Interface: To accommodate the new tools offered in Inspire 2015, a new ribbon
style interface organizes the tools into tabs. Users are able to customize the tabs to tailor the
workflow to their process.
•
Faster Geometry Functions: Geometry functions in the program are running up to 300%
faster than previous versions of Inspire.
solidThinking Evolve
solidThinking Evolve allows industrial designers to develop forms faster, using either Windows or OS
X. It enables you to capture an initial sketch, explore styling alternatives, and visualize products
with realistic renderings generated in real time. Evolve provides organic surface modeling and
parametric control, with NURBS-based surfaces and solids and a unique ConstructionTree history
feature.
Key enhancements for solidThinking Evolve 2015 include:
•
New PolyNURBS toolset with Nurbify: Convert a polygonal model to an organic NURBS
surface with a single click using the new Nurbify tool.
•
Photorealistic rendering: A completely redesigned rendering tool creates life-like images
with an enhanced user interface.
•
Improved surface modeling: Enhancements to the surface modeling toolset create a
seamless experience with greater control over modeling outcomes.
•
Better user interface: An updated user interface focuses on creating more efficient
workflows.
•
Greater compatibility: Now compatible with 64-bit Mac OS X.
HyperWorks Desktop 14.0 Release Notes
10
Proprietary Information of Altair Engineering
Design Exploration
HyperStudy
HyperStudy 14.0 provides several exciting new features that enable users to explore designs more
thoroughly and efficiently than ever before. From quickly picking your design parameters in
HyperMesh to a new streamlined response definition experience, getting HyperStudy setup to run
your investigation has never been easier.
The new inclusion matrix allows optimizers to utilize existing run information, increasing the
optimizer’s efficiency and making the most out of your data. The automatic cross-validation check
can save time by calculating checks on the Fit quality without a dedicated validation matrix.
HyperWorks Desktop 14.0 Release Notes
11
Proprietary Information of Altair Engineering
Vertical Solutions
HyperWorks 14.0 extends the offer for manufacturing and engineering solutions, with new
functionalities and an innovative delivery model to better capture knowledge for vertical processes.
HyperXtrude 2015
Today's extrusion companies are forced to produce a higher mix of complex profiles in shorter
product development cycles while simultaneously reducing their production costs. HyperXtrude is a
simulation tool developed to analyze and validate the design of extrusion dies and process.
HyperXtrude® 2015 introduced a new CAD interface for HyperXtrude solver and takes giant leap to
a direct CAD to solution approach. This approach automated and hid the meshing and data deck
creation; and completely relegated it to the background. Hence, after creating the CAD model user
submitted the job for analysis. HyperXtrude 2015 supports steady state and transient metal
extrusion, tool deflection, and bearing optimization analysis.
Virtual Wind Tunnel
Virtual Wind Tunnel is a vertical application to perform wind tunnel simulations of vehicles in an
efficient, accurate and robust manner. An intuitive user interface streamlines the process to define
parameters for meshing as well as CFD case setup. The definition of physical objects, like rotating
wheels or heat exchangers, includes intelligent automation to reduce the user interaction to a
minimum.
Automatic report generation is embedded in the system to summarize information about the
numerical model, such as mesh statistics or boundary conditions, as well as the aerodynamic
results, like lift and drag coefficient.
Based on Altair’s CFD solver AcuSolve, Virtual Wind Tunnel delivers highly accurate results and
provides a platform for short product development cycles.
HyperWorks Packaged Solutions
The HyperWorks Solutions are specialized packages of software and services that support the
implementation and utilization of Altair’s solutions and technologies, tailorable to meet customers’
specific requirements and automate CAE workflows. Solutions include:
•
Reporting Automation Director: Streamlines the often time-consuming tasks
associated with the mechanics of results generation and reporting, allowing focus to
remain on the interpretation and understanding of results.
•
NVH Director: Designed to reduce the simulation cycle time, freeing CAE engineers to
focus on optimizing product design and performance.
•
Impact Simulation Director: Automate the laborious, manual tasks associated with
model set-up, analysis, post-processing and reporting.
•
Squeak & Rattle Director: Offers a complete set of capabilities to streamline the entire
S&R simulation workflow process from model creation to results visualization.
HyperWorks Desktop 14.0 Release Notes
12
Proprietary Information of Altair Engineering
HyperMesh 14.0 Release Notes
General
Modularization and Common Model Build
•
A new part based workflow is available which brings modularization to HyperMesh. One of
its primary benefits is that it promotes flow of data from PDM to HyperMesh. Full
representation management and configuration management are enabled with new data
redundancy checks to ensure model integrity. The data can be read indirectly from PDM,
via PLMXML, so the hierarchical structure is read and populated within HyperMesh. Once
the PLMXML data is read into HyperMesh, and the CAD representations are also read in,
it’s possible to automatically batchmesh the parts directly. Batchmeshing of parts provides
the ability to mesh several representations such as Crash, NVH and Durability, each with
their own meshing parameters. Once meshed, it’s possible that a sub-system can be
saved; that sub-system could be sent to other users, subsequently altered, and read back
into HyperMesh. Any changes and/or redundancy are captured and resolved and the parts
and their changes are read back into the correct hierarchical location. With the part based
workflow, the possibility of a common model approach is enabled. This workflow is
important for any multi-variant, multi-representation, multi-model model build. It provides
the opportunity to significantly reduce model build times by generating and managing the
CAE part data more effectively via a layered common model approach. The layered
common model contains all representations, it can then be configured so that the
appropriate model can be generated quickly. The information from PDM is inherited within
HyperMesh and applied to the various entities; the PDM hierarchy is preserved, material
and properties are generated from the PDM data directly plus much more.
•
Redundant entity management is enabled which provides the ability to control which
FE/geometry, material, and/or property attributes are read into the session – the user has
the ability to select whether to retain the information already in session, or, select the
incoming information to overwrite what’s already in session.
HyperWorks Desktop 14.0 Release Notes
13
Proprietary Information of Altair Engineering
ID Management
•
ID management coverage has increased to support all solvers that use include files. The
supported solvers now include; LS-DYNA, RADIOSS, OptiStruct, Nastran, Pamcrash, and
Abaqus.
•
Reserve: This new capability enables a discreet or range of IDs to be reserved. These
reserved IDs will be sacred and can be reused later if required.
•
The ID management is now supported for the master model. So, if the model does not
have an include structure, it is still possible to manage the IDs and renumber the model at
the master model level.
HyperWorks Desktop 14.0 Release Notes
14
Proprietary Information of Altair Engineering
XRef Updates
Improvements have been made to the usability of the XRef tool. It’s now easier to traverse through
the references and cross-referenced entities.
A new hierarchical view offered for XRef
Xref can be invoked multiple times
while in the XRef dialog for optimal
model exploration
Delete - Referenced, Empty and Unused
Within the browser, new options have been added so that it’s possible to delete an entity and its
referenced entities. In addition, and as per the Delete panel, it’s now possible to delete empty and
unused data directly from the browser.
Undo/Redo
A new history mechanism is enabled which allows, by default, one hundred undo/redo operations.
The undo/redo support is focused on entity creation and editing, most geometry and meshing
operations plus more. Not all operations are supported and if one of those operations is executed
then the history mechanism is reset.
HyperWorks Desktop 14.0 Release Notes
15
Proprietary Information of Altair Engineering
Solver Browser Updates
For LS-DYNA, it’s possible to view the data as per the Include structure.
Box Trim
In addition to Ls-Dyna, Box Trim is now enabled for OptiStruct, Nastran and Abaqus solver profiles.
HyperWorks Desktop 14.0 Release Notes
16
Proprietary Information of Altair Engineering
Face and Edge Selection
A new selection mode is enabled for the selection of faces and edges. Pressure and Contact creation
are the two main areas where the selection modes are available.
Dynamic Design Analysis Method (DDAM) Interface
Dynamic Design Analysis Method is used to simulate underwater explosions. Within HyperMesh,
there is a new tool to support the setup of response spectrum analysis. It is available for the Abaqus
solver profile.
HyperWorks Desktop 14.0 Release Notes
17
Proprietary Information of Altair Engineering
Improved Visualization
Significant performance and usability improvements have been achieved by automatically
controlling the amount of mesh line detail displayed. The mesh lines are drawn appropriately
dependent on the zoom level of the model. For example, if the model is viewed at a global level, the
mesh lines will be suppressed, when the model is viewed more closely, then mesh lines will appear.
Improvements have also been made to the visualization and performance of the drawing of
boundary conditions, node selection, transparency and utilizing current GPU technology to increase
large model handling. A new “optimize view controls” option helps increase dynamic model handling
speeds by simplifying graphics.
Updated 3Dconnexion Device Support
Updated support for 3Dconnexion devices, including better default settings and usability controls
through the updated driver APIs within HyperMesh.
Added Better Support for Integrated GPUs on Notebooks
HyperMesh will now try to utilize the dedicated GPU (graphics) in a laptop or notebook using
combination of Intel’s integrated GPU and NVIDIA’s or AMD’s dedicated graphics cards.
HyperWorks Desktop 14.0 Release Notes
18
Proprietary Information of Altair Engineering
Subscribe in HyperWorks Collaboration Tools
It’s now possible to subscribe to a part(s) in PDM, and if a change occurs the user, within
HyperMesh, can be notified of those changes so that they can download and import the amended
CAD file.
H3D Export of Result
H3D files exported from HyperMesh can now optionally contain contour results plotted from the Post
panel, the Comparison tool, and the Check Elems panel.
Resolved Issues
•
Loads associated to geometry failed to get deleted after deleting the geometry.
•
Display reserve in Model browser was not working correctly for assemblies.
•
Performance issue associated with creating contact surfaces on solid elements.
•
Active and Export state are not correctly saved in the HM binary file.
•
Field loads are calculated differently when shells are on top of solid elements.
•
Part replacement issue related to missing second layer of washer.
•
Performance issue related to updating multiple composite properties.
HyperWorks Desktop 14.0 Release Notes
19
Proprietary Information of Altair Engineering
Connectors
Connector Entity Editor (CEE)
The CEE can be found in the lower part of the Connector browser and gives easy access to all
important connector attributes of currently selected connectors. With the CEE it’s now possible to
precisely change single attributes and realize various connectors at once.
All attributes are described with tooltips.
FEMSITE Interface Support
A new interface is enabled to support the FEMSITE Connector capabilities.
HyperWorks Desktop 14.0 Release Notes
20
Proprietary Information of Altair Engineering
New "Modified" Connector State
The connector color is changed from green (realized) to blue (modified) now, if their attributes have
been changed in the Connector Entity Editor. This signifies that the information on the connector
might be inconsistent with the current realization state. A following re-realization turns the
connector to green or red and the state is then re-sync’d.
A new function is added which will re-realize all “modified” connectors with their updated attributes.
Automatic Differentiation Between lap-, t- and butt- Welds for Hexa and Penta Seams
Hexa and penta seam realizations are slightly differently created dependent on the weld type (B, L,
T). Before the realization is performed the angle between the two parts is measured. Dependent on
that angle a lap-, t-or butt-weld is performed.
The connector angle control is located in the general connector options
The general penta seam realization type has been re-introduced.
Consider Shell Thickness and Offset for Solid Positioning Option
The connector option “consider shell thickness and offset for solid positioning” is now supported for
penta seams.
HyperWorks Desktop 14.0 Release Notes
21
Proprietary Information of Altair Engineering
Hexa Adhesive Seams in t- Cases
The hexa adhesive seam realization now has options like shell gap, constant thickness, mid thickness
for T-cases. The hexa height is dependent on these settings.
Hexa Position to Edge
For the hexa adhesive seam realization the position of the hexas related to the free edge can be
user defined. The negative side is defined as the side of the smaller angle measured at the free edge
between the two parts to be connected.
HyperWorks Desktop 14.0 Release Notes
22
Proprietary Information of Altair Engineering
Hexa (Tapered T) Realization Type
A new seam realization type “hexa (tapered T)” has been implemented for various solvers. This
realization type is intended to be used for t-cases. The size and exact position can be defined
thickness dependent or the exact dimension and position parameters can be given.
Connector Style Conversion
Spot connectors can be converted to bolt connectors and vice versa. This can be done from the
context menu in the lower part of the Connector browser.
New Link Type for Parts
A new entity type part has been introduced into HyperMesh. This entity type is also being supported
for being used as link for the connector technology.
Connector Link Type Conversion
For connectors different link types are supported. It’s possible now to convert certain link types into
another link type. Conversion is supported between part-, component- and property-links.
Updates for Seam Quad (angled + capped + L) and Seam Quad (angled + capped + T)
These realization types can be performed without the creation of the cap elements. Then the cap
angle as well as the runoff angle are not considered anymore.
HyperWorks Desktop 14.0 Release Notes
23
Proprietary Information of Altair Engineering
Use Normal Direction of the Closest Element to Determine Links Option
This option can be found in the Spot Connector options. In certain situations, when many small
element cluster of different link candidates are very close to the connector position it might happen,
that unintended links are found. To prevent this behavior the option can be activated and the
normal direction of the closest link is considered for further link detection.
Option to Define Imprint Size for Seams
For seam imprint the imprint size can now be defined with a certain value, the average mesh size or
as the pitch size.
RBE3 (Load Transfer) Update
For the RBE3 (load transfer) realization the tolerance is used to detect the nodes, which should be
considered for the connection. To be able to limit the number of attached node a limit per layer can
be defined.
Diameter Mapping Table
What has been formerly known as DvsT is the Diameter Mapping Table now. This table can be
accessed from all ACM spot weld panels, when the diameter is not directly assigned. In the table the
user can describe how the main flange thickness is recognized. The main flange thickness decides
about the finally used ACM diameter. The thickness ranges can directly be modified in the table and
a diameter mapping file can be saved from this window. When realizing ACMs the finally used
diameter is written to each single connector.
HyperWorks Desktop 14.0 Release Notes
24
Proprietary Information of Altair Engineering
Area Connector Realization for RADIOSS
A new area connector realization type for the RADIOSS user profile has been added. This realization
performs a typical hexa adhesive connection with contact definition.
HyperWorks Desktop 14.0 Release Notes
25
Proprietary Information of Altair Engineering
Geometry
Midsurface Skin Offset
A new "skin offset" midsurface extraction method has been added. This method generates a
midsurface by duplicating and offsetting the inner skin surfaces and assigning a constant thickness.
This is useful for parts where there is a constant thickness with no t-connections expected in the
final result. This is significantly faster than other midsurface extraction methods, but is focused
only on this specific model class.
Midsurface Imprint
A new tool has been added to the Midsurface panel for imprinting solid features to the midsurface.
This is useful when the midsurface does not properly represent solid features like pockets, thickness
transitions, etc. Imprints can be made in multiple ways to accurately capture these features.
Midsurface Panel Workflow
The Midsurface panel has been reorganized, with attention paid to the most common workflows.
Tools have been separated logically into subpanels, with shortcuts to other relevant panels added.
New options to control the behavior of warning messages have also been added.
Enhanced sorting behavior has also been adopted. Components created for sorting now
automatically inherit their parent component’s attributes (color, card image, material, property,
etc.) and are organized into the same assembly/include/module structure. A new sort mode has
been added to create incrementally named components, based on the parent component name.
Finally, it is now possible to immediately sort the midsurfaces after extraction, instead of requiring a
second manual step.
HyperWorks Desktop 14.0 Release Notes
26
Proprietary Information of Altair Engineering
Metadata Propagation
Metadata is now propagated when performing most geometry editing operations, and certain
geometry creation operations (duplicate, spline/trimmed surfaces from free lines). This allows for
metadata to be duplicated and combined during relevant operations, leading to improved
automation and scripting capabilities.
Spline Creation
•
An option to keep the input line endpoints has been added.
•
When creating a spline mesh, the nodes are now automatically equivalenced with the
input mesh or geometry.
•
The Spline from Bound Nodes tool has been updated to utilize all input nodes in the spline
creation.
Tags
All geometric entities are now supported for creation of HM tag entities.
HyperWorks Desktop 14.0 Release Notes
27
Proprietary Information of Altair Engineering
Metadata to CAE
This tool has been enhanced to support the creation of regions.
HyperWorks Desktop 14.0 Release Notes
28
Proprietary Information of Altair Engineering
Resolved Issues
•
Continued work to improve accuracy and robustness of geometric editing operations,
particularly solid editing.
•
Loads on geometry are now properly deleted when deleting geometry.
•
Addressed model-specific midsurface creation and editing issues.
HyperWorks Desktop 14.0 Release Notes
29
Proprietary Information of Altair Engineering
Meshing
Mesh Controls
A new browser-based workflow for meshing has been implemented.
"mesh control" entity. This new entity:
This workflow utilizes the new
•
Allows for the definition of formal, centralized, reusable meshing scenarios.
•
Is saved to the .hm file for data persistency.
•
Has both model and local controls available.
•
Allows for easy reapplication during design changes, via the use of regions.
•
Utilizes the Entity Editor for setup and review.
The following meshing algorithms are available:
•
BatchMesher (single CPU).
•
All surface and element-based automeshing algorithms, including proximity, angle-based
and geometric refinement capabilities.
•
Feature-based surface tria meshing.
•
Volume meshing, including standard and CFD tetra meshing, and local BL control.
•
Refinement zones for box, sphere, ellipsoid, cylinder, cone and frustum shapes, which
apply to surface, wrapper and/or volume meshing.
HyperWorks Desktop 14.0 Release Notes
30
Proprietary Information of Altair Engineering
BatchMesher
•
Now accessible within the Automesh panel, via the renamed "batchmesh/QI optimize"
surface meshing subpanel. This is useful for meshing individual components, or select
surfaces of components using a single CPU. The standalone BatchMesher is still
recommended for use for multi-part meshing, as it has the added benefit of multi-CPU
processing.
•
Continued improvement on feature recognition and capture, focused primarily on fillets,
holes, beads and bird-beaks.
•
Significant mesh flow improvements
•
Added support for taper to the criteria file
Mesh Pattern Refinement
The ability to refine shell elements by pattern within a cube is now possible.
along with a refinement box and a transition box, are input.
A target mesh size,
Improved Normals Adjustment
The workflow for adjusting element and surface normal has been significantly improved. The panel
has been redesigned to aid in a more streamlined workflow, adding capabilities to adjust entities
more efficiently and with better performance.
HyperWorks Desktop 14.0 Release Notes
31
Proprietary Information of Altair Engineering
Fill Hole/Gap Tool
•
Auto detect and fills the holes/gaps within selected components/elements
•
Remesh the filled holes/gaps/patch with neighboring element type and size
•
Ability to detect and fill the feature holes
Automated Hole Fill
Automated Gap Fill
HyperWorks Desktop 14.0 Release Notes
32
Proprietary Information of Altair Engineering
Acoustic Cavity
Improvements have been made to the Acoustic Cavity mesher and workflow:
•
Improvements have been made to better capture features and pockets.
•
Creation of a variable size all tetra-mesh is now possible.
•
The maximum element size can now be input directly, or calculated based on the
maximum frequency and number of elements per wavelength.
•
Enhanced UI with access to previously defined cavities, creation of ACMODL cards and
tools for creating MPCs between cavities.
Electromagnetic Lattice Mesh
A new tool has been added for generating EM lattice meshes.
Resolved Issues
•
R-body meshes now have improved connectivity with fewer gaps
•
Addressed several issues and added a few enhancements for the Mesh Coarsening tool.
•
Improvements for remeshing elements using the "surface edges" mode have been made.
HyperWorks Desktop 14.0 Release Notes
33
Proprietary Information of Altair Engineering
•
The performance of creating features using the "connected" mode has been significantly
improved.
HyperWorks Desktop 14.0 Release Notes
34
Proprietary Information of Altair Engineering
APIs
Command File
•
command.cmf has been replaced by command.tcl.
ease of scripting and readability.
This allows for significantly improved
•
The ability to block writing of all view commands to the command file has been
implemented.
•
New environment variables have been added to control the command file read/write
location (HM_COMMANDFILE_DIR) and mode (HM_COMMANDFILE_MODE). The available
modes allow for appending to a command file, overwriting an existing command file, or
creating a unique command file.
hmmenu.set
•
New environment variables have been added to control the hmmenu.set file read/write
location (HM_MENUSET_DIR) and overwrite behavior (HM_MENUSET_OVERWRITE).
Hole Detection
A new, consolidated suite of APIs has been added for detecting and reporting information about
holes in both geometry and FE.
Resolved Issues
•
Improved the performance of group entity baseelement* data names.
•
Resolved multiple issues with *setvalue and hm_getvalue.
HyperWorks Desktop 14.0 Release Notes
35
Proprietary Information of Altair Engineering
HyperView 14.0 Release Notes
Highlights
HyperView version 14.0 brings a number of new features, general enhancements and bug fixes. These
include Top/Bottom Contouring, addition of Material/Property information in the HV Browser, result
display for multiple overlaid models, a browser in HyperView Player, and video overlay enhancements.
In addition, several issues have been resolved (For a complete list, see below).
Top and Bottom Contour
This new method of contouring can be used to read and contour results (for example, stress or
strain) on both the top and bottom layers of a shell element simultaneously in a single plot. The user
can choose any of the available layers as top and bottom. This can be used to review which side of
an element/part is under tension or compression.
Multiple Model Result Overlay
This enhancement allows users to plot and view results for multiple overlaid models in a single
window without having to switch between the models (In previous releases, result plot can be
viewed only on the current model). When multiple models are overlaid, users can select any of the
displayed parts and apply a specific result. This provides a more convenient way to compare
HyperWorks Desktop 14.0 Release Notes
36
Proprietary Information of Altair Engineering
multiple models in a single window layout. For a given plot type (contour, vector or tensor) only a
single result-type can be plotted across all models at a given time and the list of result-types
available are based on the current model. Specific rules governing copy/overlay of windows, import
of legacy session files have been established. Please refer to HyperView User’s Guide
documentation.
HyperView Player Browser
A basic browser showing assembly, components and sets information has been added to HyperView
Player. The components will be listed along with sub-assemblies under the assembly folder. Users
can change the mesh style of components and the draw style of sets. They can also show, hide or
isolate component(s), set(s) or assemblies via a context menu.
HyperWorks Desktop 14.0 Release Notes
37
Proprietary Information of Altair Engineering
Material and Property Information in the Browser
Limited support of material and property information is provided in the browser through the
Advanced Result-Math template. Name and ID of the materials and properties will be displayed.
Users can show/hide/isolate by material or property and use virtual collector to pick part in graphics
area to see corresponding material or property.
HyperWorks Desktop 14.0 Release Notes
38
Proprietary Information of Altair Engineering
Video Overlay
(Also available in HyperWorks Desktop 13.0.111hotfix)
Significant improvements have been made to the video overlay (Image Planes) functionality in this
release of HyperView. It is now possible to achieve a good overlay of Model and Video/Image by
providing the properties of the camera that was used to capture the image or by a multiple point
alignment method. In the former, camera properties such as focal length, sensor height etc., are
input through the views entity in the browser. This provides a more direct way of achieving
alignment between model and image. A new projection type under views called Lens has been
added for this purpose.
In the latter method, a new tab has been added under the 2D Image Plane section and this method
works by allowing the user to pick points (pairs of pixels in the image and corresponding nodes in
the model). A minimum of seven points are required as input. It is also recommended that points
are picked at different depths and preferably towards the center of the image/video. The GUI will
show a dynamically updating error value to indicate to the user the quality of the selected points.
HyperView will then use the points to adjust the model size and orient it in the appropriate view so
that a good alignment is achieved between the model and the image/video.
HyperWorks Desktop 14.0 Release Notes
39
Proprietary Information of Altair Engineering
Crow’s Foot Draw Mode for Tensors
Crow’s foot representation is provided as one of the draw modes in the tensor panel. Any 3 vectors
can be chosen, but this is used widely in the aerospace industry to review in-plane forces on shell
elements.
Improved Visualization
Significant performance and usability improvements have been achieved by automatically controlling
the amount of mesh line detail shown on the screen. The mesh lines are drawn appropriately
dependent on the model zoom level. For example, if the model is viewed at a global level, the mesh
lines will be suppressed; when the model is viewed more closely, then mesh lines will appear. The
mesh lines are also drawn inheriting the component color as opposed to pure black mesh lines which
was the case previously. Improvements have also been made to the visualization and performance
by utilizing current GPU technology to increase large model handling. Added optimizing view controls
to help increase dynamic model handling speeds by simplifying graphics.
Updated 3Dconnexion Device Support
Updated support for 3Dconnexion devices, including better default settings and usability controls
through the updated driver APIs within HyperView.
HyperWorks Desktop 14.0 Release Notes
40
Proprietary Information of Altair Engineering
Added Better Support for Integrated GPUs on Notebooks
HyperMesh will now try to utilize the dedicated GPU (graphics) in a laptop or notebook using a
combination of Intel’s integrated GPU and NVIDIA’s or AMD’s dedicated graphics cards.
General Enhancements
•
A checkbox called use corner data is added to the Vector panel and will be enabled if
such data is available in the op2/xdb result file. Using this option will render corner bound
forces and moments on 1D elements as vectors, provided that the Result-Math template
is set to Advanced and the OptiStruct/Nastran input deck is used as model file.
•
A new toolbar called Visibility Controls is added to HyperView for quick visibility
manipulation – Isolate, Hide, Display All/None/Reverse and Unmask. This toolbar works
on both component and element selections.
•
Ply systems for orthotropic/composite shells in RADIOSS are supported. The systems for
these individual plies (layers) can be reviewed through the Systems Review dialog.
Stresses and Strains can be resolved in the ply system. To enable this, the datatype PHI
must be written to the RADIOSS animation file.
•
Some modifications have been made to the FLD panel: the existing compression line has
been renamed shear line. A new line called uniaxial compression line has been added.
The Edit Legend dialog has a new category called High Wrinkle tendency.
•
Option to turn off text "Value =" when value option is selected in the Measures panel is
provided.
•
Option to show subcase along with value at same time for an envelope loadcase is
provided in the Measures panel.
•
HV Legend background color will also be made transparent when capturing the graphics
area through image capture toolbar.
•
The text ‘CornerData’ will be displayed in the legend title if the result plot is generated
using such data.
•
Option to select any set of simulations steps to trace is provided in the Tracing panel.
•
"High Ascii" international characters are supported in the Notes panel.
•
Options to turn ON/OFF, select font and pick color of prefix is added to the Vector panel.
•
Options to turn ON/OFF, select font and pick color of “principal prefix", "Normal prefix",
"Shear prefix", is added to the Tensor panel.
•
Tresca is added to the list of computed invariants in the Contour panel.
•
New option to quick query a contour result is provided. This will display contour value and
the ID of the entity to which it is attached.
•
Option to set the precision to zero is provided in the Measure panel.
•
Triaxiality and Lode angle parameter is added to the list of computed results for stress
tensor in the Contour panel.
•
Time delay used in export of GIF files is saved to HW settings (hwsettings.xml) file.
HyperWorks Desktop 14.0 Release Notes
41
Proprietary Information of Altair Engineering
Resolved Issues
•
By face selection method does not work when normal of elements are flipped.
•
Result math operator BCNodeToElem shows N/A on mid-side nodes for 2nd order
elements with corner bound values.
•
Application crashes when animating an adaptive model with solid elements.
•
Modifying averaging method drop down resets resolved-in system to Elemental system.
•
Drop in performance when expanding all folders in the Include browser in Linux.
•
Video tracking is not restored when session file is re-opened.
•
Contour Legend appears vertically compressed on an Ultra-High Def display in Linux.
•
Saved/reloaded views result in the model disappearing from the display.
•
Last load case missing in H3D containing envelope of all load cases (also resolved in
13.0.111hotfix).
•
Application crash while trying to display contour of corner scalar data.
•
Mismatch in contour between source file and H3D file in the case of derived load case
containing solid elements.
•
Include view in Results browser does not show non-Cartesian systems.
•
Application crash when accessing Include browser after loading H3D file created from
Madymo output.
•
Plotting corner data results and exporting H3D exported both corner and centroidal data
causing performance issue.
•
Contour plot on H3D does not match the one on the source result file for a variety of use
cases.
•
User profiles not written upon exiting HyperView on Linux OS.
•
Unable to select nodes after deleting pages in the session.
•
Perspective setting is not saved to the session file leading to a change in model view
when the file is re-opened.
•
Value filter setting not used when user applies contour settings to Iso panel.
•
Difference in Spaceball mouse speed between HyperView and HyperMesh.
•
User specified translation for exploded view fails to restore when session is re-opened.
•
View synchronization has clipping issue for models with exploded views.
•
Contour plotted through the browser shows N/A due to the presence of white space in the
result type names.
•
Unable to pick entities on non-current model when creating measures using Entity Editor.
•
Tolerance settings not restored in FBD panel.
•
Crash using GetReaderList API when a non-existent file is passed as an argument.
•
Application crashes when using user-defined systems on measures involving overlaid
models.
•
Graphics issue when overlaying and animating FEMZIP result files.
HyperWorks Desktop 14.0 Release Notes
42
Proprietary Information of Altair Engineering
•
Incorrect stress results shown on axisymmetric elements in Abaqus ODB result files.
Known Issues
As of September 1, 2015 (Version45), Google Chrome browser has disabled support for NPAPI based
plugins citing security risks. This means HyperView Player embedded in HTML pages will not work
with Chrome browsers. We are currently investigating other methods to support HVP plugins on
Chrome. Until an alternative solution is found, users are recommended to use other browsers that
still support NPAPI such as Firefox and Opera. Windows users can use Internet Explorer which uses
ActiveX to support embedding in the browser.
HyperWorks Desktop 14.0 Release Notes
43
Proprietary Information of Altair Engineering
Solver Interface
General Enhancements
•
LS-Dyna FEMZIP (d3plot.fz) result files up to v8.08 can be read in HyperView.
•
PAMCRASH 2G result files up to v2014 can be read in HyperView.
•
Reading of more than 999 RADIOSS Animation files is supported.
•
OP2 FEMZIP result files (op2.fz) can be read in HyperView.
•
Assembly hierarchy comments written to the Nastran input file by ANSA/PATRAN can be
read in HyperView.
•
OP2 result files generated by PARAM, POST, 1 option in input deck is supported.
•
Post-processing of axisymmetric elements (CTRIAX6) results in OP2 Result file is
supported.
•
Reading of LS-Dyna binary result file BLSTFOR is supported.
•
SVAR (user defined state variable) result type in ANSYS result files is supported.
•
Kinematic couplings will be represented as RBEs when ODB is loaded into HyperView.
Resolved Issues
•
HyperView reads older version of ODB result file from memory even after loading updated
version.
•
Issue reading multiple LS-Dyna d3eigv result files.
•
Kinetic energy result plot not displayed on CONM2 elements in OptiStruct result file.
•
Stress results on CTRIAR elements in OP2 result file not available for plotting.
•
Memory issue when loading certain Ansys RST result files leading to application hang.
•
Composite stress and strain results from Nastran and OptiStruct result files.
HyperWorks Desktop 14.0 Release Notes
44
Proprietary Information of Altair Engineering
HyperGraph 14.0 Release Notes
Highlights
The 14.0 release allows users to import and analyze data more quickly than previous versions. The
Inspect mode enables quick data mining for a huge number of curves, Plot Browser enhancements
such as filter support for all entities will speed up the editing of multiple entities at once, and features
like Summary Tables Using Report Overlay will make tedious hand-editing of summary tables obsolete.
Inspect Mode - Mouse-over Curve and Data Point Highlighting
HyperGraph contains enhanced functionality for displaying and analyzing even a large number of
curves, thereby improving a curve's visibility and usability. Inspect mode, which increases the
screen area of the plot, is triggered via double-click. In this mode, single curves can be highlighted
by fading out all other curves both in the graphics area and in the legend, and data point markers
can be shown on the pre-highlighted curves when the mouse pointer moves over them. Similarly,
notes can be displayed as a symbol and pop-up at mouse-over, which allows for the visualization of
many notes in a small area. Pre-highlighting of all plot entities is also supported, including the
highlighting of entities in non-active windows. For plots with multiple axes, only the axes associated
with the highlighted curves will be shown.
Plot Browser - Filter Support for All Entities
The Plot Browser now supports filtering in all Plot Browser Views for all HyperGraph entities. In
previous versions, filtering was only possible for curves and vectors in the Curve View; now filters
for axes, notes, legends, headers, footers, and datum lines in the corresponding views can be
added. Adding filters via the property tables using the right mouse button makes it fast and easy to
filter for every entity property.
HyperWorks Desktop 14.0 Release Notes
45
Proprietary Information of Altair Engineering
TableView Enhancements
Multiple layout enhancements to TableView come with this build. The default table size is increased
and cells can be merged and split over columns. Text alignment, both horizontal and vertical, is now
possible, and the border thickness can be controlled. Cut, copy and paste from and to Excel is now
supported, in addition to the export and import of Excel *.csv files.
HyperWorks Desktop 14.0 Release Notes
46
Proprietary Information of Altair Engineering
Summary Tables Using Report Overlay
This new feature can replace customized solutions which are designed to create summary tables for
overlaid reports. Two methods can be used to overlay tables: appending rows/columns or inserting
(interlacing/alternating) rows/columns. “Append” mode will append whole rows or columns to the
table, as part of one single overlay area, every time a report is overlaid. “Interlace” mode allows the
user to define multiple interlace areas which will be inserted in such a way that results of the same
type can be seen side by side, e.g. the summary table will show first the head acceleration values
side by side, then the chest intrusion side by side, for all overlaid runs in a crash evaluation. Header
cells which are above these areas will be expanded.
HyperWorks Desktop 14.0 Release Notes
47
Proprietary Information of Altair Engineering
Flexible Reports – Best Match Algorithm
This feature allows the user to search for the best curve channel match based on the Type, Request
and Component names when curve channels are not available in the selected result files. A typical
use-case would be if the user wants to use a report template for only slightly different channel
names, e.g. for driver and co-driver in crash test data. The results are sorted using a string match
to the shortest distance, and the user can confirm and edit the search results before the report will
be applied.
HyperWorks Desktop 14.0 Release Notes
48
Proprietary Information of Altair Engineering
HgTrans Enhancements
HgTrans now supports improved filtering which allows for the handling of large files with huge
request lists via a GUI which has a modern look and feel. Filtering using wildcards allows much
more detailed filter strings, and the user is warned before a filter string which would return such a
huge list, therefore slowing down the interactive workflow, is applied.
HyperWorks Desktop 14.0 Release Notes
49
Proprietary Information of Altair Engineering
Highlight Respective Entities in HyperView
If one or more HyperView windows are open on the same page as a HyperGraph 2D window and the
user selects “Highlight Source Entity in Model” from the context-sensitive curve menu, the
referenced node, element or component will be highlighted in HyperView. Using the “Isolate”
option will show only the components which contains the respective entities. This will also work for
math reference curves which refer to multiple result curves of multiple entities. This feature is
supported for LS-Dyna only.
HyperWorks Desktop 14.0 Release Notes
50
Proprietary Information of Altair Engineering
Unit Scaling Support for Math Functions
The enabling of Unit Scaling for math functions allows to the user change the axis units without the
need to change scale factors in vectors or math expressions in notes. The unit scaling converts the
input as required by the function and synchronizes the output units with the input units. This is
supported for injury and trig functions; the related Vehicle Safety Tools macros are adapted
automatically if Unit Scaling is enabled. Preference file statements are available to support unit
scaling for customized functions as well.
HyperWorks Desktop 14.0 Release Notes
51
Proprietary Information of Altair Engineering
Math Functions
New math functions are added:
•
OLC++ : Calculates both the Occupant Load Criteria (OLC) and OLC++
•
Sliding Mean Integral: Smooth’s the curve using the integral of a sliding window
•
Relative Displacement: Removes rigid body motion from time history results. Supported
Solvers: RADIOSS, LS-Dyna, PamCrash
•
Logarithmic interpolation of curves where one or both axes have a logarithmic scale
Campbell Diagrams
Campbell Diagrams illustrate the dependency of the Eigen frequencies on the rotation rates. The
user can define, in a separate GUI, the intersection area, the engine order list for full or half orders
and the layout of the required output. Summary tables can be displayed in the TableView client and
HyperWorks Desktop 14.0 Release Notes
52
Proprietary Information of Altair Engineering
exported in CSV format. Notes at intersections can be displayed in minimized mode so that the
information for each only appears when the mouse pointer hovers over the note’s symbol.
Solver Interfaces
•
PCH Reader: Improved support of subcases for faster selection in the Build Plots panel.
•
Nastran NX: New reader for NVH post-processing of f06 files.
•
LS-Dyna: Request names will show only NAME and not NAME_ID by default.
•
RADIOSS: CLUSTER data support is enabled in HyperGraph readers.
•
RADIOSS: Unit support has been added for T01 files.
•
PAMCRASH: Support of ERFH, HDF5 and THP files for PAMCRASH-2014.
General Enhancements
•
All horizontal and vertical axes can be (un-)frozen at the window level, by using the new
Axis frozen property.
•
The Buttterworth filter function has been updated with an optional argument to reduce
the ringing on both ends of the filtered curve.
•
Nij function now supports Out-Of-Position for 5% dummies.
•
File type *.hgdata has been added to the file browser in the Build Plots panel.
•
The file browser list in Multiple Files has been made self-adjusting so that it can
incorporate long path names.
•
A new Templex function, getcwd(), returns the current working directory.
•
A new Templex function, setreaderversion(), allows the user to set to set the
HyperGraph reader version from within a Templex input file.
•
The file filter in browsers (such as the Build Plots browser and the Define Curves
browser) will now be saved on Linux.
HyperWorks Desktop 14.0 Release Notes
53
Proprietary Information of Altair Engineering
Resolved Issues
•
Deleting pages with curves referenced in curves from type math on other pages no longer
saved these curves with corrupt math references in a session file.
•
The default limit for the number of lines supported by the hgtextcolumn.exe reader that
reads multiple formats of ASCII is set from 200,000 to 400,000 lines.
•
Positioning notes in the plotting client via the Tcl command “notehandle SetPosition”
works now as expected, the upper left note corner are positioned to the closest pixel
defined by the axis coordinates given to the command.
•
The performance problems overlaying reports with hundreds of pages and multiple curves
per page from H3D files are fixed.
•
The performance reading big LS-Dyna binout files is no longer affected if this binout files
contain a large amount of meta-data.
•
HyperGraph notes that contain text longer than the plot graphic area can now be
positioned using the mouse pointer. The text alignment works as expected.
•
Curves from legacy files that were trimmed using the start- and end-index feature during
the import failed in 13.0.110. In 14.0 they will be trimmed as expected.
•
The support of element type 33 was added to the pch-file reader. In 13.0.110 the import
of files containing results from this element type failed.
•
Pch-files with more than 10,000,000 lines can now be imported into HyperGraph 14.0.
They failed in 13.0.110.
•
The ISO-MME reader failed on Linus in previous versions if the channel names in the files
and on the channel files where different considering case-sensitivity. This issue is fixed.
•
Trimming curves during import using Advanced Options with Start- and End-Index failed
for some result types, the first point was ignored. In 14.0 this will work as expected.
•
When notes where attached to the maximum of a curve and these curves where trimmed
using the Modify Curves panel, the notes could have vanished despite fitting the plot. In
14.0 the notes only disappear when the attachment point is not in the graphics area.
•
Adding min- and max-notes via the context menu of the Plot browser no longer fails when
the Vehicle Safety Tools are loaded.
•
Every time a session was loaded and saved the y position of the note changed slightly.
14.0 no longer shows this behavior.
•
Changing in polar plots the dB - scaling factor to a value different than one no longer
changes the phase angle.
•
In the Define Curves panel, large integer values of curves from type value are no longer
converted to scientific format which caused the loss of valid digits saving and reloading
the session.
•
Support of result files that contain Swedish characters in the file path works in 14.0.
•
The precision with which the curve data will be saved in a session file is now stored in the
hwsettings.xml file for permanent usage.
•
Notes attached to the magnitude of complex curves scaled with db20 reference values
now show the y-axis values using expressions like {y} or {x} and not the vector source
value as in previous versions.
HyperWorks Desktop 14.0 Release Notes
54
Proprietary Information of Altair Engineering
•
Curves in complex plots based on math references expressions no longer get scaled twice
using db20 reference values unequal to one.
•
Curve labels created by macros from VST (e.g. resultant) are now evaluated correctly and
list the different source curves.
•
The changes made in curve names created via the Measure panel of HyperView are now
saved in report templates and no longer get lost when the report was loaded.
•
The axis in complex plots can now be edited when the phase/magnitude positions are
swapped which was not possible in previous versions.
•
The bug introduced in 13.0.110 that using report template some notes could be missing
in the graphics area is fixed in 14.0.
•
HgTrans supports the selection of USERDEFINED types from Adams req files.
•
Notes could be placed on top of the legends, the behavior of the versions before 12.0 is
restored.
•
The file list in the Build Plots panel shows now all the plot files used in a loaded session,
independently if they were used in the panel or not.
•
In 14.0 the axis scaling will be preserved if the axis min/max values where calculated by
a fit with curves based on math expressions using customized Templex functions.
•
HyperGraph 14.0 no longer crashes while exporting curves created by the HyperView
Measure panel as CSV Blocks.
•
The stability of the ISO-MME reader has been improved to handle data types which
contain metadata but no requests or components.
•
EXCEL csv-files created with Export Curves no longer contain empty lines at the end.
•
When you load a report template via a customized menu button it will load and highlight
the corresponding report definition. This was broken in previous versions.
•
Most of the functions to vertically modify curves using the Modify Curves panel only work
if the curves are strictly increasing both and x- and y-direction. The curves will now be
checked and a warning will be given if the curves are not meet this requirements.
•
In 14.0 complex plots labels with an increased font size no longer penetrate into the
graphics area.
•
The new subcase-based pch-file reader in 14.0 supports Panel Participation data, which
fails in previous versions.
•
Using high integer values for axis min/max values (e.g. 8 digits node IDs on the x-axis)
are no longer converted into scientific format.
•
HgTrans crashed in 13.0 loading op2-files. This issue is fixed.
•
In previous versions external functions (IPC functions) used to round off to the 6th
decimal point when returning real values. In 14.0 these values will have double precision.
•
In 14.0 the performance of animating curves has been improved when big and/or colored
cursors are selected in the Options panel.
•
In the Build Plots panel “X Request” pop-up dialog a filter like in the pop-up dialog of “Y
Request” has been added.
HyperWorks Desktop 14.0 Release Notes
55
Proprietary Information of Altair Engineering
•
In the Notes panel the field which shows the label of attached curves has been increased
to show long curve labels.
•
The scaling error of the PSD5 function is fixed in 14.0
Known Issues
•
Handling tables with more than a couple of hundred rows slows down the performance of
TableView significantly. In 14.0 TableView is designed to support report summary tables
and should not be used to handle tables with more than ~500 rows/columns.
HyperWorks Desktop 14.0 Release Notes
56
Proprietary Information of Altair Engineering
MotionView 14.0 Release Notes
Highlights
The Altair multibody solution, MotionSolve, consists of the following capabilities:
•
MotionView – the modeling environment
•
MotionSolve – the solver
•
Automotive Solutions – for suspension design, vehicle dynamics, ride comfort and durability
•
HyperGraph/HyperView – the post-processing environment
The 14.0 release of MotionSolve contains three major capabilities that span the breadth of the
multibody solution – modeling, simulation and post-processing.
•
3D Contact
•
Nonlinear Finite Elements (NLFE) - Expermental
•
Advanced Driver and Road for vehicle simulation
Refer to the Multibody Solutions Release notes for a consolidated release notes. This section describes
release content specific to MotionView (includes Auto solutions) only.
HyperWorks Desktop 14.0 Release Notes
57
Proprietary Information of Altair Engineering
3D Contact
The 3D Contact capabilities in MotionSolve have been completely revamped. In line with these changes
MotionView 14.0 has major improvements and features for easy modeling and obtain a robust contact
simulation results.
CAD Geometry can now be Imported Easily and Reliably to Provide the Geometry for 3D
Contact
New meshing options are now available when importing CAD geometry. These enable you to control
the mesh density in a very intuitive way.
Accurate contact force generation requires uniform meshes. New algorithms, more suited for
uniform mesh generation are now used. This new meshing option is only enabled for input
geometries and not for FE models.
Contact Models are Defined with Minimum of User Input
The Properties tab in the Contact panel has been reorganized to have sub-tabs for normal force and
friction force.
HyperWorks Desktop 14.0 Release Notes
58
Proprietary Information of Altair Engineering
Reasonable contact and friction parameters are provided as defaults. You do not have to change
these unless your contacts have special properties.
Parameters are checked for validity as they are entered and the user is alerted to invalid values
before the model is run.
Output Requests to measure contact forces are automatically created.
Extensive Geometry Checks are Performed Automatically to Avoid Potential Failures in the
Solver
All contact meshes examined and invalid or “dirty” geometry is clearly identified during modeling.
Contact surfaces for all meshes can be visualized using “Highlight contact side” option in the
Connectivity tab.
Surface normals can be inverted with just one operation. This is especially useful when contact is
happening inside a selected closed geometry.
Red indicates outward normals and blue indicates the inward normals.
HyperWorks Desktop 14.0 Release Notes
59
Proprietary Information of Altair Engineering
The normals for a mesh are automatically corrected when inconsistencies are detected. This is
especially useful when tria-meshes are imported from STL files or Wavefront OBJ files.
Open edges and T connections, if any, can be highlighted as shown in the figure on the top right. If
the mesh is clean (i.e. it forms a closed volume), the panel indicates “No mesh errors” else the
“Highlight mesh errors” option becomes available.
Mesh Cleaning and Healing Tools
MotionView now includes a new mesh manipulation tool that allows you to clean previously unusable
meshes for contact solution. The capability is accessed from the Import CAD or FE utility.
Import CAD or FE utility now provides additional cleaning options that enable you to fill holes,
thicken surfaces, eliminate T-junctions and shrink-wrap unusable meshes. All of this is done with a
minimum of user input.
New Contact Models are Supported
A new Volume Model for normal force calculations is now supported. User defined contact models for
both normal and friction forces are also supported.
In addition, user-defined normal and friction force definitions are supported.
HyperWorks Desktop 14.0 Release Notes
60
Proprietary Information of Altair Engineering
Updated Contact Properties Editor Macro
This macro tool has been updated to take into account the new contact properties available in the
solver and makes setting properties across multiple contacts quick and intuitive.
Contacts are Visualized During Modeling
A new “implicit graphics” contact icon is now visible. You can visually see the geometries that have
contact connections.
Associated graphics are highlighted when contact entity is selected.
HyperWorks Desktop 14.0 Release Notes
61
Proprietary Information of Altair Engineering
Precise Contact Detection is Supported
Advanced options are available to detect the precise event when contact occurs. An option is also
available to change the maximum step size subsequent to contact detection. This option introduces
a Sensor entity with a zero crossing attribute into the MotionSolve XML file. This Sensor will control
integration step size so that the onset of contact is accurately detected.
Refer to Rigid to Rigid Contact section in MotionView User Guide to learn more about modeling
contacts.
Contact Report for Easy Post Processing
MotionView now has capability to generate a Contact Report automatically to simplify the post
processing of contacts.
For every model that involves contacts, the auto-generated report contains the necessary plots and
animations that enable you to easily understand contact behavior in your model.
•
A ‘Contact Overview’ is first generated so you can see where the contact has occurred in
the model.
•
Two animations of the model, one showing penetration depth and the second showing
normal contact force are available for review
•
Finally, the report also contains ‘Overall Contact Force vs. Time’ plot for every contact in
the model.
HyperWorks Desktop 14.0 Release Notes
62
Proprietary Information of Altair Engineering
Nonlinear Finite Elements
MotionSolve 14.0 introduces the “NLFE Body” which allows you to model non-linearly flexible
components in your multi-body system. This is an experimental feature in the current version. The
NLFE Body is based on the Absolute Nodal Coordinate Formulation (ANCF). Nonlinearity can occur for
two main reasons: (A) Geometric nonlinearity and (B) Material non-linearity. The NLFE body supports
both.
MotionView has new capabilities for modeling NLFE systems. A generic NLFE Body can be created using
either the CABLE or BEAM element.
CABLE
The CABLE element does not resist shear or torsion forces. This implies that the cross section of this
element does not change as the entity deforms.
This element can be used to model cables, wires, ropes, etc. Only the Linear Elastic material model
is supported.
BEAM
The BEAM element resists all forms of deformation, which implies that the cross section can also
deform with load. This can be visualized in HyperView while using this element.
Multiple cross sections are supported for the BEAM element:
•
Circular (solid and hollow)
•
Rectangular or Box (solid and hollow)
•
Channel
•
Cross
•
Hat
•
H, I, L, T and Z sections
This element can be used to model beams, springs, belts, rubber components etc. You may choose
from either a Linear-Elastic or a Hyper-Elastic material.
Three Hyper Elastic materials are supported – Neo-Hookean Compressible, Mooney-Rivlin and Yeoh
models. MotionView provides a set of recommended values for the model parameters. You may
however, create new materials and enter your own parameters.
3D Visualization
MotionView provides 3D visualization of the NLFE body based on the profile and cross section
properties.
HyperWorks Desktop 14.0 Release Notes
63
Proprietary Information of Altair Engineering
Defining Preloaded/Relaxed Configurations
An NLFE body can now have a pre-loaded position in addition to the model position. The user can
import these in a CSV format. Upon import, the model position will be shown in wireframe mode and
the loaded position in solid.
Saving Pre-load Configurations
With a combination Save command in MotionSolve and a Python script, it is now possible to save the
configuration of the NLFE at the end of simulation into a CSV file. This csv file can be read into MV
as preloaded configuration. An option is also available to visualize the unloaded and pre-loaded
profile together.
NLFE Subsystems
In addition to the generic Cable and Beam modeling elements, MotionView also supports a small set
of NLFE subsystems that are specific to the Auto industry. These subsystems may be accessed from
the vertical toolbar to the left of the graphics window. The following subsystems are supported.
Stabilizer bar
HyperWorks Desktop 14.0 Release Notes
64
Proprietary Information of Altair Engineering
Coil spring
Refer to NLFE Subsystems to learn more about using these subsystems in your model.
MotionSolve supports a much larger set of NLFE modeling elements. You can use these in a
MotionView model by using a Templex template. Native MotionView support is not available at this
time.
HyperWorks Desktop 14.0 Release Notes
65
Proprietary Information of Altair Engineering
Advanced Driver and Road Vehicle Simulation
Driver
The Altair Driver is a set of MotionView models and libraries that drives virtual vehicles with closed loop
and open loop inputs to perform a variety of events. Examples include driving on a rough, curving
road while controlling speed for durability or ride comfort analysis, or driving a skid pad at increasing
speed to predict understeer.
This is achieved by controlling the five vehicle inputs Steering, Throttle, Gear, Brake and Clutch so that
the vehicle is able to accomplish the required maneuvers. The driver is completely integrated into
MDLLIB. You can build a full vehicle for use with the Advanced Driver using MotionView’s Assembly
Wizard. You do this by selecting the Full vehicle with advanced driver option, as shown in the
dialog below.
Once a vehicle + driver is built, the next step is to define what the combined system should do. You
specify driver events to do this. In this release, the input to the driver model is an “Advanced Driver
File”. This is an ASCII TeimOrbit format file that scripts a simulation as a sequence of maneuvers. The
Altair Driver and the Advanced Driver File support both open and closed loop events.
With Altair Driver File you can define any number of full vehicle events for the driver to execute.
•
A complex simulation may be decomposed into many simpler “atomic maneuvers
•
For each maneuver
− You can select the controllers for vehicle inputs
− You can define termination conditions for each maneuver.
•
You can define open loop, closed-loop or user-defined controllers to control:
− Longitudinal speed or acceleration.
− Vehicle path or lateral acceleration.
•
Switching controllers during a simulation
HyperWorks Desktop 14.0 Release Notes
66
Proprietary Information of Altair Engineering
•
Defining path and speed profiles parametrically, in a table, or by referencing a data file.
The overall relationship between the Altair Driver and the vehicle is shown in the figure below.
Full vehicle models built for use with the Advanced Driver include the following new systems:
•
A four-wheel disc brake system for slowing the vehicle
•
Either a linear torque map power train or an IC engine with clutch and manual gearbox for
accelerating the vehicle.
Once the full vehicle is assembled use the task wizard from the Analysis menu to add an Advanced
Driver Analysis as shown below.
Road
Use the Road Graphics Tools to build a MotionView graphic system to visualize the road or to extract a
driver path from Curved Regular Grid (.crg), Regular Grid (.rgr) and 3D Spline Road files. Using the
Road Graphics Tool you can resample the road to reduce or increase the number points in the driver
path or the number of surfaces in the resulting graphics. You can also add lane divider lines and
shoulders to the road, and set the colors of the road, the lane divider lines, and shoulders.
The road graphic system the tool creates is automatically imported into your model, but also saved to
disk so you import it in any MotionView model.
HyperWorks Desktop 14.0 Release Notes
67
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
68
Proprietary Information of Altair Engineering
Other MotionView Enhancements
This section documents other important enhancements that have been made to MotionView.
Geometric Stiffening for CMS Flexible Bodies
You can model geometric stiffening for CMS flexible bodies in MotionSolve. Geometric or stress
stiffening is an effect most commonly seen in beams under tension where the frequency of the
fundamental modes increases as the tension is increased. Such an effect can be observed in rotating
beam structures like helicopter or wind turbine rotor-blades.
Include the stress stiffness data in your CMS flexible body by including the following in your FEM file:
CMSMETH, 1, CBG, , 15
CBG is the keyword that instructs OptiStruct to create the CMS flexible body with additional geometric
stiffness data.
You can then import this flexible body in your MotionView model as you would ordinarily. Note: Only
the Craig-Brampton method is currently supported for calculating the geometric stiffness data.
This new MotionSolve capability is completely supported in MotionView also.
Flex-body Generation with Geometric Stiffness can be Done using the Flexprep Tool
A GUI option is available to specify geometric stiffness.
Selecting the highlighted option would include the relevant CMSMETH statement of the form
CMSMETH, 1, CBG, , 15 into the FEM File.
Geometric Stiffness Option can be Specified in the Body (Flex body) Panel
“Include geometric stiffening” checkbox is now available in the Flex body panel. This option will only
be activated when the flex h3d contains the geometric stiff (GEOSTIFF) data that is saved while
generating the flexible body during the CMS process.
HyperWorks Desktop 14.0 Release Notes
69
Proprietary Information of Altair Engineering
Checking on this option will enable export of the geometric stiffness data into MotionSolve XML file.
Geometric Stiffness Data can be Selectively Chosen by Mode for Export to MotionSolve
The “Modes” dialog in the flex-body panel now contains an additional column to control export of
geometric stiffness data for each mode.
Turning off geometric stiffness data for certain modes can significantly improve the solution time.
However, you should be sure that the modes that are turned off have a minor influence on
geometric stiffening effects.
Direct Geometry Import
In this release, MotionView introduces new functionalities based on the Parasolid geometry engine.
A new ability to import geometry of type “CADGraphic” is now available. All common formats can be
imported.
HyperWorks Desktop 14.0 Release Notes
70
Proprietary Information of Altair Engineering
You will experience several benefits because of this capability.
•
All common CAD file formats are supported and can be easily imported as graphic
statements
•
CAD Geometry imported in this way has mass and inertia attributes
•
The Body to which CADGraphics are attached, can automatically inherit the mass and
inertia properties based on the geometry properties
•
User can pick specific components in geometry and export them to solver. A separate
parasolid file will be generated with the component being selected. No mesh data written
to XML file.
•
User has the flexibility to change mesh refinement level of geometry by adjusting the
fidelity factor before exporting to MotionSolve.
The underlying Parasolid geometry engine is also used to automatically compute mass and inertia
properties for simple analytical shapes such as spheres, cylinders, boxes and frusta.
An option is provided in body panel using which user may choose to inherit mass and inertia
properties from associated graphics.
HyperWorks Desktop 14.0 Release Notes
71
Proprietary Information of Altair Engineering
Materials
A default set of materials with material properties is now available. These materials can be used
either in an NLFE Body or CADGraphics. The Materials can be accessed using the menu Model >
Materials.
Usability Improvements
•
Multiple picking from graphics area to cut/delete entities.
entities.
•
Merging multiple bodies from the graphics area. User can select two or more bodies
(using the Shift key), use the right click to merge the bodies to a new body or to Ground
Body
•
A new option is now available in MotionView to select a Ground Body. When Body
collector is active (to pick a body as a reference into an entity panel), clicking on empty
space in the Graphics area picks Ground Body with following option ON.
HyperWorks Desktop 14.0 Release Notes
Hold Shift key to select many
72
Proprietary Information of Altair Engineering
General State Element (GSE)
The General State Element, also known as CONTROL_STATEEQN in MotionSolve, is now fully
supported. This includes the user interface and complete MDL support. You no longer need a
Templex template to use this capability. A Control_StateEquation icon is available in the “Control
Entity” toolbar to add the entity.
The two tabs in the panel can be used to define all the necessary inputs to the control state
equation.
Implicit Variables
This enhancement is applicable only in the MotionSolve mode. Traditionally, the
REFERENCE_VARIABLE in MotionSolve has explicitly defined a new algebraic variable through an
expression or a user-subroutine. Solver Variables are now extended so that they are implicitly
defined. This means that VARIABLES can now be used to define constraints, and the VARIABLE,
HyperWorks Desktop 14.0 Release Notes
73
Proprietary Information of Altair Engineering
instead of assuming the value of the expression, now becomes the Lagrange Multiplier required to
enforce the constraint.
The SolverVariable panel along with the implicit option has additional controls to tell MotionSolve
how the Lagrange Multiplier has to be handled.
Modal Force
MotionView now supports adding a modal force on a flexible body (Force_FlexModal in MotionSolve).
A modal force can be a distributed force such as fluid pressure or aerodynamic load that can vary
with regards to time.
The distributed force should be applied on the FE model that would be used to generate the CMS
flexible body. The force would be decomposed into modal form.
MotionView presents the modal force as load case ID as available in the flexible body H3D. The
modal force can be scaled during simulation if needed.
HyperWorks Desktop 14.0 Release Notes
74
Proprietary Information of Altair Engineering
Scalar Action only Force and Torque
MotionView now supports a Scalar action only force or torque. This means that Action Only forces or
torques can be applied in a direction specified by the z-axis of a Marker.
Mass and Inertia Value Correction for Symmetric Pair Bodies
A new symmetry option is now available in MotionView to define symmetric body pairs. Cross
products of inertias are properly negated (about the Global ZX plane) when a body is reflected. This
new option can be turned on using the Tools > Options > Build Model. The symmetric pair’s
properties correspond to the bodies being represented as mirror reflections of each other.
HyperWorks Desktop 14.0 Release Notes
75
Proprietary Information of Altair Engineering
The new calculation considers the offset between the CM marker and IM marker if any. Nonsymmetry of the CM location is not considered. Also, the symmetry is not applied to initial conditions.
“Body Deformable” Changed to “Flex Body (CMS)”
The option “Body Deformable” that is used to define a flexible body has been renamed to “Flex Body
(CMS)” to distinguish it from the NLFE body. (The NLFE Body is added through the “Add Body”
dialog)
The “Flex Body CMS” panel has additional options:
HyperWorks Desktop 14.0 Release Notes
76
Proprietary Information of Altair Engineering
•
Rigidify – to set the MotionSolve attribute rigidified = “true” in <Body_Flexible
•
Include Geometric stiffening – To include geometric stiffening during solution of flexible
body whose H3d has geometric stiffness data
Import CAD or FE
•
Now opens with mesh options expanded
•
Graphic H3d files are automatically populated while selecting an input file
•
Multiple confirmation messages related to successful import are eliminated.
API for Calculating Aggregate Mass, CG and Inertia Properties of Systems
MotionView now provides a new TCL API, GetAggregateCGAndInertia, which allows you to calculate
the aggregate mass, center of gravity, moment of inertia and product of inertias for multiple
systems or multiple bodies in your model. Documentation for this function is included with this
release.
Enhanced FatiguePrep Tool
MotionView now supports translation of .plt to RPC format.
Recent Files
The File menu now lists the four most recent MDL files used.
HyperWorks Desktop 14.0 Release Notes
77
Proprietary Information of Altair Engineering
Resolved Issues
Graphic Selection/Picking
Linux/Mac Entity Selection: When a body is selected in a browser on Linux, all the mesh lines of the
graphics of that body were highlighted. This is now resolved
Pick center choice with Ctrl+Middle mouse button was not being honored correctly. The graphics
used to rotate about a different center than selected. This issue is fixed.
ADM Import
ADM files with expressions having large blank spaces from the beginning of the line leads to
expressions being truncated. This issue is fixed in this release.
Import of ADM that did not contain MATRIX information for flexible body resulted in crash of
application. This issue has been fixed.
Flexprep
Issues related to incorrect modes and interface nodes while converting .h3d files to .mnf files and
.mnf to .h3d files are resolved within this release.
Erroneous GENSTIFF and SELNOD matrix was being written out while converting .h3d to .mtx when
using kgf as the solver unit. This issue is fixed within this release.
An application error while using Create RBE2 spiders option in flex prep is fixed. The error appeared
while closing HyperMesh button with the Close (x) button.
Graphics Entity
A custom ID specified for a graphic entity was lost on Check Model. This issue is fixed.
MotionView would not report error when components specified in *Graphic statement of File type
were missing. This issue has been fixed.
An application error while changing the mesh scheme for File Graphics under a Graphic system is
fixed.
MDL
An issue with false referencing of entity due to use of same variable names in a system as well as at
Model level is now fixed. When an entity (e.g. p_0) that existed at Model level was referenced in a
system that contained entity of same type and same variable name (p_0) was being saved with a
local address (p_0 instead of MODEL.p_0).
White spaces in the USER expression in Sensor entity evaluate subroutine resulted in the expression
being truncated. This issue is resolved.
Setting of MAF export option was lost on model save. This issue has been resolved.
HyperWorks Desktop 14.0 Release Notes
78
Proprietary Information of Altair Engineering
Miscellaneous
Statics simulation settings - Maximum # of iterations is now defaulted to 75
Write results data per time option is now set to LAST by default instead of ALL. This resolves issues
in post-processing due to multiple results at certain time steps in a sequential simulation.
Outputs of type Entity sets on bodies used to result in many outputs with the same label. This issue
has been resolved.
An application error in Curve panel while changing type from File to Values is fixed. The error was
encountered when a file path was unresolved.
An application error encountered while using the Back/Forward button in any panel is resolved. The
error used to occur while using the button after deleting an entity that was in the selection history.
Auto Solutions Resolved Issues
Auto Spring Using Force as Install Method
Choosing force as the install method for AutoSpring resulted in an incorrect spring force at design
position during the simulation. This was due to an incorrect spring displacement offset being
calculated. This issue has been resolved.
Auto Bumpstop Pair Impact Formulation Incorrect
Choosing “Impact Length” had no effect and the distance entered was treated as the clearance in
the stop. Choosing “Impact Length” now works properly.
Auto CDTire Pair Tire Graphics not Symmetric
The tire graphics are now centered about the plane passing through the wheel center and
perpendicular to the wheel spin axis. Previously, the changing the tire aspect ratio shifted the tire
graphics along the wheel spin axis.
Ideal Steer Angle Incorrect
The ideal steer angle in the Static Design Factors report for half vehicle analyses is now output
correctly. Previously, a spurious value was output.
HyperWorks Desktop 14.0 Release Notes
79
Proprietary Information of Altair Engineering
CDTire v4.1: CDT20 - Integrator Failures Occur with the Default CDT20 Property File
Testing using the CDTire model 20 with road surface model 2000 (RSM2000) showed simulation
failures. Because CDTire model 20 uses a point-follower contact and road surface model 2000 is
three (3) dimensional, they should not be used together. To prevent inexperienced users from
encountering such failures, the default property file for CDTire in MotionView has been changed to a
CDT30 property file, which is appropriate for all road surface models. However, no changes to
CDTire or MotionSolve were made to resolve this issue. In MotionView the following system
definitions for CDTire now reference a CDT30 property file by default:
•
•
…/hw/mdl/autoentities/definitions_mdl/sysDefCDTire.mdl
…/hw/mdl/autoentities/definitions_mdl/sysDefCDTirePair.mdl
CDTire v4.1: CDT20, CDT30, and CDT40 Messages Truncated
Multi-line information and error messages for CDTire models 20, 30, and 40 were truncated on
output when used with legacy road models and CDTire v4.0. Fraunhofer ITWM corrected the
problem and improved the messages for models 20, 30, and 40.
For example, when the tire property file could not be found CDTire v4.0 output the following
message:
USRMES:USER [1]
INFO: CDTire:: Using CDTire version 4.0.0
USRMES:USER [1]
INFO: CD Tire - Time Discrete Interface.
cdt CDTire R 4.0.0 -> TIRE 1 INITIALIZING
cdt
TIRE MODEL
30 SELECTED
cdt
CTRL FILE SELECTED:
cdt
ERROR:
CDTire v4.1 now reports:
USRMES:USER [1]
INFO: CDTire:: Using CDTire version 4.1
ERRMES:USER [1]
CDTire> CDTIRE_INIT_F: PRIME PAR FILE NOT FOUND AT:
ERRMES:USER [1]
CDTire> ./prop_files/tie_30.21
CDTire v4.1: REQ838 - Adams Models Fail in MotionSolve
HyperWorks Desktop 14.0 Release Notes
80
Proprietary Information of Altair Engineering
The MotionSolve implementation of REQ838 incorrectly ordered the user subroutine input
parameters causing Adams datasets for CDTire to fail when submitted to MotionSolve. The
implementation of REQ838 in MotionSolve now orders parameters as documented by Fraunhofer
ITWM for Adams. The MotionView definitions for CDTire now create output requests using REQ839 to
avoid conflict with ADAMS.
CDTire v4.1: REQ838 – Models Without Output Requests Calling REQ838 Fail
Customers reported that models without output requests calling REQ838 sometimes failed.
However, Altair was unable to reproduce the issue. The problem occurred in the MotionSolve code
that interfaces CDTire. The code was updated to correct the problem.
CDTire v4.1: RSM2000 - Does not work with CDT20, CDT30 and CDT40
This release includes new CDTire new binaries from Fraunhofer ITWM that fix the issue.
CDTire v4.1: Models 20, 30, and 40 Fail with Property File Read Error
When the initial character of the first two lines (as well as any other comment line) of a CDT20, 30
or 40 tire property file began with a numeral, CDTire reported errors reading the file. Fraunhofer
revised CDTire to ignore any comment lines in property files for models 20, 30, 40 and in control
files to correct the problem.
MF-SWIFT: Initial Velocity Reporting Issue in MF-SWIFT Tyre Model
Previously MotionSolve incorrectly reported the initial velocities for tires using the MF-SWIFT model.
MotionSolve now correctly reports the initial velocities for tires using the MF-SWIFT model.
Using FIESUB 810 Causes Failure in Quasi-Static Model
•
With the previous version, using FIESUB 810 caused a solver failure for a Quasi-Static
model shared with Altair. This was determined to be due to a programming error in the
code, where the row and column values for the FIELD Jacobian were interchanged. This
has been fixed with this release.
•
A side-effect of this change is that linear analysis of models containing FIESUB 810 may
yield slightly different results. This is to be expected, since the bug-fix involves a
correction to the Jacobian matrix of the system. The following changes may be seen for
these models:
− The set of independent coordinates may be slightly different
− The eigenvalues and eigenvectors may be slightly altered
− The ABCD matrices may be slightly different
Fixes to ACTCLC Routine
HyperWorks Desktop 14.0 Release Notes
81
Proprietary Information of Altair Engineering
The contact patch velocities, slip angle and inclination angle were incorrectly computed in the
previous version of the ACTCLC routine for the user tire. These have been corrected to be consistent
with the documentation that has been shared previously with Honda.
MDLLIB: Tire Envelope Analysis on Half Vehicle Models now Support Property File Based
Shock Absorber
This was non-functional in previous releases. This issue has been fixed.
MDLLIB: Support for Models using Legacy Steering Boost System
This was non-functional in previous releases. This issue has been fixed.
MDLLIB: Full Vehicle Analyses - Incorrect Initial Rotation Velocities Using SETIC/SETWIC
Previously when using the SETIC/SETWIC option for initial velocities, the initial rotational velocities
of half-shafts, hubs and other bodies in the driveline were inconsistent with the initial rotational
velocities of the driven wheels. The initial rotational velocities are now consistent.
MDLLIB: Full Vehicle KnC Analysis
KnC analysis results for the same suspension match between Full Vehicle and Half Vehicle Analyses.
Previously, there were small differences.
MDLLIB: Steering Column System
The column support joint is moved to the lower column shaft center of mass. This makes the
support joint easier to identify when, for example, attaching the steering column to a flexible body.
HyperWorks Desktop 14.0 Release Notes
82
Proprietary Information of Altair Engineering
Known Issues
NLFE
•
Providing a specific LPRF is not supported for NLFE Body
•
Creating Helical Spring Subsystem with preload is not supported yet
Material Properties
•
MotionView does not scale material property values when units are changed
•
In the Deformable Surface panel and the Deformable Curve panel, the expanded table
does not allow you to pick an entity into a collector.
Contact
•
Switching between radio selections in Properties tab may be slower for large models
•
Importing ADM – CONTACT statements are not converted into Contact entity in
MotionView in some cases. The statement may end up in the Unsupported statements
template.
Modal Force
•
Including Modal force during flexible body generation is not yet supported through Flex
prep
•
Modal Force does not have a graphic representation in MotionView
Geometric Stiffening
•
Unchecking and rechecking "Include Geometric stiffening does not retain the Geostiff modes
checkbox
HyperWorks Desktop 14.0 Release Notes
83
Proprietary Information of Altair Engineering
Auto Solutions Known Issues
Road Tools:
The road tools dialog should offer a means to abort road graphics generation because of the
large time require for some road file.
•
Driver:
•
Feedforward Controller doesn't follow acceleration profiles well
•
When using the driver, the tire longitudinal slip shows oscillations at time=0
•
Zero vehicle speed causes steering controller to fail.
•
Driver event UI is experimental: To enable the event editor button on the driver panel in
MotionView set the environment variable HW_MV_EXPERIMENTAL to ADVANCED_DRIVER.
MDLLIB
•
Full vehicle events with a powertrain often fail to solve because the suspension spring
preloads are too small causing the excessive suspension jounce. We recommend increasing
the spring preloads to compensate for the mass of the powertrain, and as always you should
update models.
•
Steering systems contain dummy bodies to support analyses, but these have no meaning to
users.
•
Some combinations of wizard selections do not build because referenced system definitions
use the same varname.
•
To reduce the length of the Constant Radius event the length of the initial straight section
should be based on the initial vehicle velocity
HyperWorks Desktop 14.0 Release Notes
84
Proprietary Information of Altair Engineering
HyperCrash 14.0 Release Notes
Highlights
This release includes several major usability improvements for HyperCrash: multi-edit enables you to
modify multiple entities of the same subtype quickly; orthotropic material orientation can reviewed for
shell and solids (RADIOSS only). Model checker is customizable and can be modified to follow company
best practices/standard.
General Enhancements
Multi-Edit
This enhancement allows to edit and modify multiple entities of the same type very quickly. For
example: change the element formulation for a number of properties, update a flag in a number of
contacts.
This feature is available on the following pages:
•
Rigid bodies
•
Contact Interface
•
Part (LS-DYNA only)
•
Property
•
Material
•
Element Panel
Material Orientation
The material direction of shell elements can be reviewed from:
•
The part panel (for *PART_COMPOSITE)
•
The property panel (for /PROP/TYPE10; /PROP/TYPE11; *SECTION_SHELL…)
•
The tool bar (new icon allows to review fiber orientation on elements)
•
The model checker (orientation check)
Model Checker
A number of enhancement have been made to allow the user to customize the Model Checker:
•
Checks can be organized in different model checker files
•
Level of checks can be changed easily in the right-click context menu
HyperWorks Desktop 14.0 Release Notes
85
Proprietary Information of Altair Engineering
•
Modifications can be saved and maintained across sessions
•
Filtering capabilities allows you to show only errors, warnings
Meshing Editing
•
Mirror functionality can now be applied in any direction
•
Nodes can be aligned between 2 nodes or points in the Move panel
•
Connection are now automatically deleted when the structural elements they refer to are
deleted
•
Free nodes can be deleted via window selection mode
Tied Contact Status
A new projection method is implemented and enables user to accurately report the number of untied
nodes in a given tied contact. The level of the check in the Model Checker has been adjusted to
match the level that will be reported by the solver based on the contact definition.
Searching and Filtering
Search and filtering capabilities are available in generic panel; select in model and property/material
file window. Entities can be searched by name, by ID, ID range, and so on.
Similar search capabilities are also available in the Model browser, but filtering is currently not
available.
Pre-simulation
Parameters defined to run pre-simulation for dummy positioner and seat deformer can be
customized and saved as a user profile. This profile is saved in the preference file and kept across
session.
Seat Belt Routing
A slider bar allows to control the orientation of the end vector and the position of the middle node.
HyperWorks Desktop 14.0 Release Notes
86
Proprietary Information of Altair Engineering
RADIOSS Block User Profile
New Monitored Volume Panel
The monitored volume panel now use the generic page. All entities related to monitored volume can
be created and modified from this page. The porous surface are now supported for AIRBAG1 and
COMMU1. It is also possible to convert old airbag definition (AIRBAG, COMMU, FMVBAG) to the new
format (AIRBAG1, COMMU1, FMVBAG1).
Support of XELEM (Multi-Strand Elements)
Multi-strand elements can now be created from the Seatbelt Generator page.
Enhanced Extraction
A new extraction logic is available and can be activated by activating the environment variable
HC_ADVANCED_CONNECTION_EXTRACTION in the hypercrash.tcl file. This new extraction logic
does not change the model definition.
The connection are extracted based on part name, logical connection are created by type and
organized into the corresponding panel. Automatically organized into the correct connection type.
If the environment variable is activated, HyperCrash will propose to automatically extract the
connection from the imported file (if any detected).
Keyword Support
Newly supported keywords:
•
/SURF/BRIC/FREE
•
/SURF/BRIC/EXT
•
/MAT/LAW84
•
/FAIL/EMC
•
/MAT/GAS/CSTA
Updated keywords:
•
Failure model: FLD, TBUCTHER
•
Interface: Type2, Type6, Type7, Type11, Type16, Type19, Type24
•
Material: Law2, Law32, Law43. Law52, Law58, Law59, Law70, Law73, Law77, Law83
•
Monitored Volume: AIRBAG, AIRBAG1, COMMU1, FMVBAG1, PRESS
•
Property: Type4, Type8, Type12, Type13, Type17, Type19, Type43
•
/SENSOR/INTER
•
/DAMP and /DAMP/INTER
HyperWorks Desktop 14.0 Release Notes
87
Proprietary Information of Altair Engineering
LS-DYNA User Profile
Support of #SET_TYPE_GENERAL
Creation and modification of all *SET_TYPE_GENERAL is now available from the Set panel.
Keep Data After *END
All information stored after *END that HyperCrash does not recognize is now maintained in I/O. This
allows users to keep comments or metadata written by other pre-processors.
Note that only I/O is ensured; the information that is not supported will not be updated during the
session in case of renumbering, delete, remeshing, and so on.
Keyword Support
The following materials are newly supported:
•
*MAT_024_HAZ
•
*MAT_219
•
*MAT_230
•
*MAT_266
•
*MAT_272
The following keywords were updated to LS-DYNA R7:
•
*CONTROL_CONTACT
•
*MAT_106
•
*MAT_125
•
*MAT_169
•
*MAT_ADD_EROSION
Solver Conversion
The following enhancements were made on the conversion from LS-DYNA to RADIOSS:
•
*MAT163 is converted into LAW33
•
*MAT_S05 is converted into spring TYPE13
•
*MAT_S08 is converted into spring TYPE13
•
*MAT_HILL_FOAM is converted into LAW62
•
*MAT_OGDEN_RUBBER is converted into LAW42
HyperWorks Desktop 14.0 Release Notes
88
Proprietary Information of Altair Engineering
The following enhancements were made on the conversion from OptiStruct to RADIOSS:
•
CELAS1 and CELAS2 are converted into spring type8
•
PBEAML and PBARL are converted into beam type3
•
SET GRID and SET ELEM are converted into equivalent node and elements sets
•
An HTML conversion report is generated in the directory in which the OptiStruct or
Nastran model is read
Resolved Issues
•
Conversion from OptiStruct to RADIOSS of second order tetra elements was incorrect.
•
Converting BRICK20 to SHELL16 elements lead to a crash
•
Direction of the isoparametric frame for brick element was incorrect in the RADIOSS Block
user profile
•
Mesh size was taken into account when checking for initial penetration of
*CONTACT_SURFACE_TO_SURFACE; *CONTACT_NODE_TO_SURFACE in LS-DYNA user
profile
•
Resolved several issues on interface type24:
− Visualization (slave/master)
− Conversion from type7 to type24
− Mandatory fields
− Model checker
HyperWorks Desktop 14.0 Release Notes
89
Proprietary Information of Altair Engineering
BasicFEA 14.0 Release Notes
Highlights
For v14.0, user experience was improved, so that you can approach additional analysis types, and
expand on the ones already introduced. Specifically, new non-linear capabilities, new fatigue
references, and load types were added. Additionally, there are several browser updates, which enhance
the user experience by focusing on efficiency within the browser to cut down modeling and editing
time.
Non-Linear Quasi-Static Large Displacement Subcase, LGDISP
Previous support on small displacement non-linear quasi static support has been expanded upon to
include large displacement analysis. This includes incremental subcase control and the use of
continual subcase so that you can reference and use previous solutions.
Fatigue Subcase – Subcase Reference and Time History Support
Non-Linear subcase references are now available under the fatigue subcase. Additionally, you can
now specify time history (TABFAT) and up to 10 linear and non-linear subcase references in the
browser. There is also the ability to import your own time history information in supported formats.
HyperWorks Desktop 14.0 Release Notes
90
Proprietary Information of Altair Engineering
Mass Summary for Parts
Unit specific mass values are now displayed for each part and cumulatively for the entire model.
New Mass Option for Rigid Body and Load Distribution Body
You can now enable a mass (CONM2) and center of gravity (COG) for the independent node of Rigid
Body and dependent node of Load Distribution Body.
HyperWorks Desktop 14.0 Release Notes
91
Proprietary Information of Altair Engineering
New Boundary Conditions
•
Force >> On Point
•
Enforced Displacement
New Boundary Condition Editing Mechanism
You can now edit rigid body, load distribution body, constraints, enforced displacement via a user
input field for DOF 1-6.
Drag and Drop Boundary Conditions in Browser
Boundary Conditions can now be dragged and dropped between different loadcases, if valid, and
between loadsteps and common loads.
Resolved Issues
•
Thickness values with units are now a supported input.
•
Fixed issue with Mesh settings for single parts.
parts and global setting.
Independent settings are now kept for
HyperWorks Desktop 14.0 Release Notes
92
Proprietary Information of Altair Engineering
•
Fixed contact direction issue with Sliding Pins to make more consistent.
HyperWorks Desktop 14.0 Release Notes
93
Proprietary Information of Altair Engineering
Automate 14.0 Release Notes
Highlights
•
Task development and debugging features in the Task Builder and Model Process browser
are more intuitive and easier to use.
•
Key functions are simplified including sharing and running processes.
•
New options include: Batch Mode, Process as Wizard, and Session Retrieval.
Core Enhancements
•
Save and Retrieve Session: This feature lets you save and retrieve process states in a
HyperWorks session.
•
Simplified Task Builder: The new Task Builder helps you create tasks and datatypes and
save them inside of task catalogs that are easily accessible from the Task browser.
•
Save to Process Catalog: Seamlessly save new processes to a catalog for reuse.
•
Preview and Export with Process as Wizard: Encapsulate and share complete processes
inside of a Wizard. Recipients can execute custom processes without knowledge of
Automate.
•
Process as Command: Execute processes from third party applications such as Microsoft
Excel. Run Automate processes in Batch Mode.
Usability Enhancements
Better Look and Feel
•
Meaningful command icons
•
Highlight indication
Search and Help
•
Search in all browsers to quickly retrieve items.
•
Catalog Help provides information for you to understand task and process usage.
Easy Access to Properties and Easy Debugging
•
The Model Process browser provides easy access to task properties and helps you isolate
problems in a model and verify values for inputs, outputs, and parameters.
Simplified Task and Process Assembly
•
Port selection is easier and helps you avoid mistakes when connecting tasks and
processes.
HyperWorks Desktop 14.0 Release Notes
94
Proprietary Information of Altair Engineering
Demos
The following demos are part of the installation package and include helpful task development
examples:
•
Element Check Process: Learn how to perform 1D, 2D, and 3D element checks based on
user-defined criteria.
•
Excel Connect: Learn how to expose MotionView model building and analysis processes
via Excel.
HyperWorks Desktop 14.0 Release Notes
95
Proprietary Information of Altair Engineering
HyperMath 14.0 Release Notes
Highlights
HyperMath 14.0 is the first release of HyperMath delivered on Mac OS-X.
The use of the Intel MKL libraries contributes to improve the performance of the computations.
With HyperMath 14.0 some improvements are added to the editor and the support for the TCL scripts
is enhanced.
Mac Support
HyperMath 14.0 is now available on Mac platform (Mac OS-X).
MKL Libraries
The Intel MKL libraries are used to improve the performance of the computations (such as matrix
operations).
Editor Improvements
The HyperMath editor new enhancements:
•
The ability to execute the selected part of an HyperMath (.hml) script
•
Better access to the “Find” with a “Find Again” shortcut
•
A shortcut to switch tabs when multiple scripts are open
•
On TCL command window, every TCL command executed will display the evaluated
output on screen
•
Added a command to clear the TCL console
Recording Macros
HyperMath's Editor now has a Macro recording menu. You can start/stop recording edition actions
and replay them (one to many times). Macros can be stored, recalled and removed.
TCL Support Enhancements
The support of the TCL interpreter is improved in HyperMath 14.0. In particular, the editor offers a
direct access to the help pages of the HyperMesh APIs. In case of cross execution or cross
debugging between HyperMesh and HyperMath, the output of the TCL commands is now done in the
console of HyperMesh.
HyperWorks Desktop 14.0 Release Notes
96
Proprietary Information of Altair Engineering
User Interface Improvements
Plots are enhanced. For instance, axis ticks can be defined now by entering a step size.
Resolved Issues
•
Improved plot axis values (round-off)
•
Other HyperMath language (HML) issues
•
Issues related to the script edition
HyperWorks Desktop 14.0 Release Notes
97
Proprietary Information of Altair Engineering
HyperStudy 14.0 Release Notes
Highlights
HyperStudy 14.0 provides several exciting new features that enable users to explore designs more
thoroughly and efficiently than ever before. From quickly picking your design parameters in
HyperMesh to a new streamlined response definition experience, getting HyperStudy setup to run your
investigation has never been easier.
The new inclusion matrix allows optimizers to utilize existing
run information, increasing the optimizer’s efficiency and making the most out of your data. The
automatic cross-validation check can save time by calculating checks on the Fit quality without a
dedicated validation matrix.
Inclusion Matrix
The inclusion matrix enables optimizers to optionally accept available run data as an input. This
can save significant time during the optimization process, as the optimizer can utilize previously run
data.
This inclusion data typically comes from previously run approaches, for example, DOE or
another optimization, meaning users are empowered to make sure no run data is left unused when
optimizing.
File Assistant Wizard to Build Responses
The File Assistant Wizard lets you select a target file, and a guided set of dialogs produces a
completely defined response. This efficient process simplifies the response creation steps by
moving the response construction syntax of the expression builder to the background.
Parallel Coordinate Plots
Parallel Coordinate Plots, also known as Snake Plots, have a dedicated tab in each approach’s postprocessing. The plots feature controls to only show subsets of variables and responses as well as
window filters to visualize areas of interest. These versatile plots are very effective in mining
information from large data sets.
Extended HyperMesh Parameterization
User created parameters in HyperMesh are expanded to include the Abaqus, Nastran, and RADIOSS
user profiles. These parameters can be imported by HyperStudy from HyperMesh models as design
variables.
Cross-Validation Introduced in Fit Post-Processing Diagnostics
Cross-validation is a technique used to assess the Quality of a Fit without requiring a validation
matrix.
This feature is now automatic on all Fit types in HyperStudy. While a dedicated validation
HyperWorks Desktop 14.0 Release Notes
98
Proprietary Information of Altair Engineering
matrix is still suggested for more complete checking, this time saving calculation can provide quality
information, when a validation matrix is not available.
Filtering Out Data in Fit Approaches
Including data gaps, duplicates, or outliers when building a Fit can lead to poor quality results. New
data filters automatically clean up data sets without manual intervention, helping ensure the Fit is
not biased by bad data.
Other Enhancements
•
New SimLab model type
•
New FEKO model type
•
Fit tradeoff tabs redesigned providing an intuitive and efficient results browsing
experience
•
Fit quality metric introduced to dynamically track extrapolation
•
Histogram and Box Plots merged into Distribution tab
•
Discrete variable support has been extended within the user interface
•
A uniform distribution is now available for discrete variables
•
Introduced the Editor option to visualize fixed field demarcation lines
•
New database to handle larger data sets
•
P-values available in least squares regression diagnostics and ANOVA tables
•
Autobuild for Fit is removed as an option; the Fits will always be built.
•
Table cells now support the display of string variables values
Resolved Issues
•
The execution status of runs when multi-execute is enabled has been updated
•
The tooltip on the Optima tab now presents updated information
•
Precision loss of importing data into Fit is addressed
•
Improved speed and performance of switching plots
•
Safe opening of a running study with a second HyperStudy occurrence is supported
•
Fixed issues with using relative paths and MotionSolve models
•
Fixed a memory issue when starting HyperStudy from HyperMesh
•
Corrected matrix size calculation when creating a Full Factorial DOE with linked variables
Known Issues
•
An indexing change in the structure of stress results read by 14.0 products could impact
responses defined in older studies. Responses built using expressions like resvector, which
HyperWorks Desktop 14.0 Release Notes
99
Proprietary Information of Altair Engineering
use indexed values, will require a different set of indices when compared to previous
versions. Newly defined responses will not be affected.
HyperWorks Desktop 14.0 Release Notes
100
Proprietary Information of Altair Engineering
HyperForm 14.0 Release Notes
New Features
Incremental RADIOSS
•
Support for modeling of Pad entity that uses spring to apply the force during forming in
the user process.
•
Support for complete hot stamping setup including Blank transfer, tool closure, forming
and quenching in a single setup using user process
•
Trimming panel updated to add node selection for identifying the area to remove/keep for
3D trimming
General
•
Support of tube hydroforming process model setup in the User Process.
•
Support of standard forming process: Single Action Draw, Single Action Draw with Pad,
Double Action Draw, Double Action Draw with Pad, and Triple Action Draw in the User
Process.
•
Support for trim line optimization and blank shape optimization in the Process
Optimization setup.
•
Support for more than one tooling for the gravity setup in the Auto Process.
•
Spring back distance calculation has been updated to plot the distance value with signs
based on relative position of the part after spring back.
•
Entity Editor has been added in the Model Browser to edit solver keywords.
•
New option available in HyperForm Settings to include or exclude strain, strain history
from gravity run in forming. Default is set as Exclude.
Die Module
•
New Die browser that tailors user in natural work flow to create die surface from the part
geometry.
•
New Die browser has following additional options:
− Automatic hole recognition and identify the holes for future trimming operation
− Automatic hole filling
− Automatic and manual flange identification and remove flanges from the draw die design
− Contour options for
 Undercut negative draft in the part relative to draw direction
 Draw depth based on flat binder along the draw direction
 Draw depth based on created binder surface along the draw direction
HyperWorks Desktop 14.0 Release Notes
101
Proprietary Information of Altair Engineering
− Part tipping updated to consider only the features formed in the part in the drawing stage.
− Allows you to create multiple stage draw dies.
•
New option to develop trim line based on the flanges and the addendum.
•
Binder creation and editing improved to handle binder by sections and part on binder.
•
Binder edit options has been redesigned to allow users to update the binder through
sections with options of changing them in 2D and 3D plane and ability to cast them at
other locations as needed.
•
Part on Binder has been added as a new option to edit the binders created to match
surface of the part.
•
Prep Geom panel has been updated with new options to
− Fill side cutouts
− Remove the surface edge radius
− Identify holes and fill them
− Extend surface beyond the selected part boundary
One Step
•
Automatic filling of holes in the part from the One Step browser.
•
Blank nesting tool layouts are updated to support one-up, two-up and mirror layouts with
options for each of them.
•
Addendum definition added as part of the blank nesting to add additional material to
flattened blank.
•
Carrier option added to support nesting for progressive die use cases. Added carrier
options includes side carrier, central carrier, nested carrier, double side and central
carrier, double side and nested carrier, double side carrier.
•
New Batch RIT and Nesting tool has been added that performs Results Initialization and
Nesting in batch mode from input file that could be CAD geometry or HM file.
HyperWorks Desktop 14.0 Release Notes
102
Proprietary Information of Altair Engineering
Resolved Issues
Incremental RADIOSS
•
Blank penetration into the tooling at the end of the gravity run.
•
Trimming functionality has been improved to avoid small elements and degenerated
elements in the trimmed edge to improve spring back.
•
Element connectivity not exported after trimming in the STA file for solid element
trimming.
General
•
Auto position and return home position are fixed to work for local system for both sheet
and tube.
•
Multistage manager provides warning message if there are spaces in the path rather than
an error during run.
•
Material definition not carrying to all stages in the Multistage Manager.
•
Draw bead creation improved to avoid skewed draw bead lines due to projection.
•
Improve auto position speed to handle pin – sheet contact.
•
Log file concept implemented to update user on the progress in the optimization.
Die Module
•
Addendum modify panel updated to highlight the ribs for selection.
•
Addendum generation updated in Addendum Modify panel updated to create continuous
surface with no gaps.
One Step
•
Warning message added if the material selected is not exported into the created deck.
HyperWorks Desktop 14.0 Release Notes
103
Proprietary Information of Altair Engineering
HyperXtrude 14.0 Release Notes
HyperXtrude - Metal Extrusion
Interface for Super Alloy Extrusion
The Extrusion Wizard is enhanced to support super alloy extrusion with glass pad lubrication.
Improvements to the Extrusion Wizard Batch
Many major improvements are implemented in batch version of the Extrusion Wizard to create a
complete HX data deck in the background. These improvements include automatic geometry
cleanup, robust meshing methods and better reporting of the status and errors.
Bearing Optimization Support in the Extrusion Wizard
Extrusion Wizard batch is enhanced to support bearing optimization model setup.
Models with Choked Bearing Region
Extrusion Wizard batch is enhanced to support models with choked bearing regions.
Bearing Regions with Non-uniform Starting Points
Extrusion Wizard batch is enhanced to support models that have bearing regions starting at varying
z-coordinates.
Batch Version of Tool Deflection Wizard
A batch version of the Tool Deflection Wizard is implemented to be used by the HX Job Manager and
HyperXtrude 2015.
Weld Strength Data
The interface is enhanced to automatically write the boundary and parameter data required to
compute weld strength.
HyperWorks Desktop 14.0 Release Notes
104
Proprietary Information of Altair Engineering
Grain Size Data
The interface is enhanced to automatically write the default parameters used for computing grain
size in the *.hx file. This will enable users to modify these parameters as needed by editing this file.
Support for Coupled Analysis with OptiStruct
The Extrusion Wizard is enhanced to support setup of coupled analysis with OptiStruct. The interface
will automatically write both HX and OptiStruct data decks. This feature is supported in batch mode
as well.
Multi-cycle Analysis Support via Extrusion Wizard Batch
Extrusion wizard in batch mode now supports transient multi-cycle analysis. In addition, it will
automatically setup time step data. Hence, from HyperXtrude 2015.1, a transient multi-cycle
analysis with billet skin can be performed with just two additional mouse clicks.
Resolved Issues
•
Re-enabled HX Job Manager to show partial/full run status of solver jobs on remote
machines.
•
Bug fixes to fit material module and adding new materials to user’s location.
•
Resolved data handling errors in Create Billet macro.
•
Resolved an issue in computing Billet Diameter for models with symmetry.
•
Bug fixes and improvements to efficiently update shell scripts on remote machines that
are used by HX Job Manager.
•
Resolved issues in writing metadata for HX reports
•
Resolved few minor GUI bug fixes.
HyperWorks Desktop 14.0 Release Notes
105
Proprietary Information of Altair Engineering
HyperMold User Profile
Automatic Geometry Cleanup
A tool to automatically perform geometry cleanup has been added. This will help the user to remove
unwanted edges on surfaces and sliver surfaces.
HyperWorks Desktop 14.0 Release Notes
106
Proprietary Information of Altair Engineering
Moldflow User Profile
Fusion Meshing Wizard
An easy to use fusion meshing wizard is added to the interface. This tool will estimate element size
(which can be changed) and then mesh the model such that it has a good mesh match ratio.
Resolved Issues
•
Resolved issues in automatic 2D meshing algorithm used by different wizards
•
Resolved issues in extracting and plotting thickness for Midplane models
HyperWorks Desktop 14.0 Release Notes
107
Proprietary Information of Altair Engineering
Moldex3D Solid and Shell
Resolved Issues
•
Resolved issues in automatic 2D meshing algorithm used by different wizards
•
Resolved issues in extracting and plotting thickness for midsurface models
HyperWorks Desktop 14.0 Release Notes
108
Proprietary Information of Altair Engineering
CFD 14.0 Release Notes
General
Fill Hole/Gap Patch Utility
This tool is located in the mesh menu for all user profiles. It is useful utility to fill the holes and
feature loops. It works for 1st order tria or quad elements. The selection makes it easier to fill the
holes for selected components. It is an automated utility to fill the holes within selected components
or elements. You can manually fill the holes using node/free edges selection.
Merge – Disconnect Components based on Connectivity
The Merge and Disconnect tools are located in the Utility tab.
•
Merge: Merges the selected components to one component. This is useful for
combining/organizing components for meshing or analysis.
•
Disconnect: Disconnect a component based on connectivity of mesh. This is very useful
when you are working with .stl models.
Mesh Control Browser
The Mesh Control browser is located in the Mesh menu for all user profiles.
Mesh controls provide the capability to automate and streamline the meshing process for surface
meshers, adaptive wrapper and volume mesher in one browser. Using mesh controls enable
you to define mesh settings for all of the entities that need to be meshed in one meshing job.
•
Local Settings: Define local settings for surface mesher, adaptive wrapper and volume
mesher.
•
Export/Import: Mesh settings defined in mesh controls are stored in the database.
Mesh controls can also be saved to an external .xml template file for reuse in other
models.
HyperWorks Desktop 14.0 Release Notes
109
Proprietary Information of Altair Engineering
Surface Meshing Enhancements
Surface Deviation Based Element Remesher
New multithreaded mesher, similar to surface deviation to remesh the elements is now available. It
can be accessed via mesh controls. It captures curvature and provides smooth transition from
smaller sized elements to larger sized elements. The new mesher internally identifies the elements
features based on defined feature angle and captures and refines them. It provides the capability to
refine the mesh based on proximity and angles specification. You can define any additional features
to be captured and refined.
2D Mesh Refinement Controls
New options to refine 2d mesh based on the proximity, angle and shapes are added and can be
accessed through mesh controls along with surface deviation meshers.
Proximity based refinement:
Provides the capability to refine surface or elements mesh based on proximity. It automatically
identifies close proximity areas and refines elements based on user specification. You can define
refinement based on refinement size, element size/gap ratio or through refinement curve.
Angle based refinement:
Provides the capability to refine surface or elements mesh based on angle between surfaces or
element faces. It automatically identifies refinement candidates and refines elements based on user
specification. You have control over angle limits and refinement size.
HyperWorks Desktop 14.0 Release Notes
110
Proprietary Information of Altair Engineering
Shape based refinement
New capability to refine 2D mesh based on shapes with refinement zones. Refinement zones can be
accessed within the Mesh Control browser. You can define box, sphere, cone, frustum, cylinder for
refinement. Graphical objects provide better idea of shape definition and location. Refinement zones
are used to refine mesh with a defined size. Refinement zones are also supported for surface
meshing (surface deviation only), adaptive wrapper, and volume meshing.
HyperWorks Desktop 14.0 Release Notes
111
Proprietary Information of Altair Engineering
Wrapper Enhancements
Cavity Wrapper
New functionality has been added to the existing wrapper to wrap the cavity as well. With the same
wrap settings, you can choose to perform exterior wrapping or cavity wrapping.
Local Wrap Settings
New capability to define localized wrap settings via the Mesh Control browser. Local controls will
take the precedent over global settings.
Wrap Selection
New functionality to define which volumes to be wrapped is introduced. This functionality can be
accessed in the Model Adaptive Wrapping Mesh Control. You have the option to wrap all the
volumes, nth largest volumes, volume enclosed by seed node or exclude volume enclosed by a seed
node.
Improved Performance
Performance of wrapping is improved in this release. Feature capturing algorithm is much faster
compared to 13.0.110. Few function is also multithreaded.
Improved Leak Detection
New functionality is added to define source and target seed node for wrapping. Now you can define
the enclosed node and target areas where leak checking is required. Multiple target points can be
defined. It is a very useful visual utility which help to seal desired cavity. If the leak is identified,
patching the gaps can be done by Fill-hole Patch tool or by increasing gap patch tolerance.
HyperWorks Desktop 14.0 Release Notes
112
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
113
Proprietary Information of Altair Engineering
Volume Meshing Enhancements
Performance Enhancements
Performance of boundary layer meshing is significantly improved in this release. 55 mi BL Penta BL
elements can be generated in one hour on a full scale external aero problem compared to 5 hours in
13-110. Boundary layer meshing is completely multithreaded.
Local BL Settings
New capability to define localized boundary layer settings. User can define local BL settings for
desired element set or components in mesh control browser. Local controls will take the precedent
over global settings.
BL Aspect Ratio Based Growth Rate
New capability to define growth rate based on desired aspect ratio. This option enables the growth
rate definition for boundary layers to be based on the defined aspect ratio of the final layer. After
the first few initial boundary layers, if this type of growth rate method is selected, the rest of the BL
will grow to achieve the user-defined Final layer height/base ratio.
BL Acceleration Based Growth Rate
New capability to define BL acceleration for boundary layers. You have the option to start the
accelerating BL growth after few BL layers. This option will provide the capability to achieve faster
BL- tetra transition.
1st Layer Height as Factor of Base 2D Elements
This feature enables you to define 1st layer height as a factor of input 2d element size. This option is
useful when the size of 2D elements varies significantly and a constant first layer height is not
needed. With this factor, a smooth BL to tetramesh transition for large variation in 2d element size.
Volume Selector
New functionality to define which volumes to mesh and option to define solid and fluid volumes
before meshing has been introduced. This functionality can be accessed in the Mesh Control
browser. You have the option to mesh all the volumes, largest volumes or volume touching
reference elements. While selecting volume touching reference element, you can distinguish fluid
and solid volume as well.
HyperWorks Desktop 14.0 Release Notes
114
Proprietary Information of Altair Engineering
Boundary Layer Contour for Visualization
This features provides new functionality to output boundary layer contours after volume meshing.
This new capability provide better options for reviewing boundary layer mesh rather than masking
elements or creating cross sections. You can define the option via the Volume Selector in the Mesh
Controls browser. After meshing, you can load the .res file to visualize the contours of first layer
BL height, number of layers generated and total boundary layer height on entire model.
AcuSolve Full Import Deck Support
New capability to import AcuSolve solver settings as well while importing .inp file has been
introduced. While importing AcuSolve solver decks (.inp file) the defined parameters in the solver
deck will also be imported in the model and can be accessed via the Solver browser. Any
unsupported parameter will be collected in “Unsupported Entries” under each folder category of the
Solver browser. You can manually edit those entries and the modified values can be exported.
AcuSolve Solver Parametric Studies
•
Parametric Definition: You can now define discrete or continuous parameters and
assign it to AcuSolve solver variables.
•
Parametric Studies: Once AcuSolve case is setup, parameters are defined and assigned to
solver variables, you can use the HyperStudy Job Launcher to transfer all of the relevant
data to HyperStudy. Afterwards, with a single click a design of experiment (DOE) study
can be performed.
HyperWorks Desktop 14.0 Release Notes
115
Proprietary Information of Altair Engineering
Resolved Issues
•
Improved surface deviation mesher: Issues related to sliver elements has been resolved.
Mesh flow has been improved. Enhanced smooth mesh across curved using better
averaging of elements size
•
Improved rigid body mesher: Fixed the issues of rigid body mesher creates free edges.
Now free edges and t-connections has been reduced significantly
•
Over refinement is avoided in the wrapper: Fixed the issues in wrapper to avoid over
refinement where not necessary. This also results in performance improvement.
HyperWorks Desktop 14.0 Release Notes
116
Proprietary Information of Altair Engineering
Aerospace 14.0 Release Notes
Aerospace Toolbar has been Rearranged
The Aerospace toolbar is rearranged into assembly, geometry, panel mesh, beam mesh, loads,
composite, connectors, results and certification for ease of grouping of functionality.
Composite Enhancements
The Composite Import dialog has been enhanced to import ply base surfaces in addition to ply
contour lines.
Each ply also now contains separate ply orientation system, and base surface.
A new ply realization method is added to Fibersim composite models.
HyperWorks Desktop 14.0 Release Notes
117
Proprietary Information of Altair Engineering
Composite realization for RADIOSS and LS-DYNA is now supported, including draping correction.
Field Mapping
A new database entity called Field has been added. It is supported in the Entity Editor.
This entity helps map pressure, temperature, property (ID, thickness) and material orientation to
new sets of elements and models from HyperView results files, CSV files, old solver decks and
matrix tables.
HyperWorks Desktop 14.0 Release Notes
118
Proprietary Information of Altair Engineering
New Matrix Browser
Version 2 of the Matrix Browser improves ease of use. This also supports multiple load case
browsing from HyperView.
HyperWorks Desktop 14.0 Release Notes
119
Proprietary Information of Altair Engineering
Aerospace Tools
•
Assembly:
•
Beam from lines: 1D element creation, update, orientation, offset and property
calculation is enhanced for Aerospace users.
Organize models from Solver Input.
HyperWorks Desktop 14.0 Release Notes
120
Proprietary Information of Altair Engineering
•
Loads:
New PLOAD1 creation/review, RSPLINE creation, review tools are added.
HyperWorks Desktop 14.0 Release Notes
121
Proprietary Information of Altair Engineering
•
New Load transform tool: Translate, rotate, and reflect models with copying loads and
multiple instancing is enhanced.
HyperWorks Desktop 14.0 Release Notes
122
Proprietary Information of Altair Engineering
•
Composite:
•
Results: Min/Max, Envelop, ranking, bar end loads, and shear plots from HyperView
results in HyperMesh has been added
•
Certification:
APA product.
New material orientation creation from curves has been added.
ESACOMP based composite certification added. This is a link to ESACOMP-
HyperWorks Desktop 14.0 Release Notes
123
Proprietary Information of Altair Engineering
Mesh Refinement
New element refinement tool based on quad mesh pattern is added.
HyperView Enhancements
•
1D element corner bound forces results are supported.
•
1D element forces are supported for nonlinear SOL 106 and 400 Nastran.
•
2D element forces based CROWS plots are supported.
•
Free body diagram support in HyperView.
•
New Aerospace profile is added to HyperView.
Midsurface Mesh Imprint
Ability to imprint pockets from solids to midsurface models are added.
HyperWorks Desktop 14.0 Release Notes
124
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
125
Proprietary Information of Altair Engineering
Crash 14.0 Release Notes
Highlights
This release includes several improvements for the Crash interfaces. A new seat belt entity is
introduced that allows you to easily create and modify a seatbelt during the session. For the Pedestrian
Impact Tool, EuroNcap protocol 7 and 8 are now supported.
Seatbelt Routing
•
The seatbelt entity is introduced. This entity allows you to update the seatbelt generated
during the HyperMesh session.
•
A new algorithm enables you to define a belt path with more than 3 nodes.
•
The position of the nodes that define the belt path can be changed modified interactively.
This feature allows you to control the location and quality of the belt generated.
•
Default material, property and contacts are automatically generated.
HyperWorks Desktop 14.0 Release Notes
126
Proprietary Information of Altair Engineering
Pedestrian Impact Tool
•
EuroNcap protocol 7.0 and 8.0 are now supported.
•
Upper and lower leg impact points are automatically generated
•
Velocity of the upper leg impactor is computed automatically
− Marking, positioning and export of adult and child points can be done at the same time
•
In the “position impactor” step, the user can export transformation and velocity cards for
selected target points (RADIOSS only)
•
Reorganized the export to improve performance. The vehicle, contacts, transformations
and impactor are exported in separate includes.
•
A tutorial is now available to guide the user through the process (CRASH-2200:
Pedestrian Head Impact Simulation)
FMVSS201/ECE-R21
Pre-Processing capabilities
•
Added positioning for FMVSS201 and ECE-R21 supporting both hemisphere and Pendulum
type headform with linear velocity and rotational velocity.
•
Using SGrP, highlight zone marking
•
Graphically pick impact target points or import via CSV file
•
Visualize/review the positions
•
Auto contact definition
•
Velocity correction for ECE-R21
•
Export files with Include structure
•
CSV export/import
HyperWorks Desktop 14.0 Release Notes
127
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
128
Proprietary Information of Altair Engineering
Post-Processing capabilities
•
Automatically post-process all hit points
•
Table of clip values and Max displacement
•
Color coding of clip values based on user defined threshold
•
Sorting of results based on clip value or max displacement
•
Easy navigation from table to plots
•
Option to overlay different hit point
•
Export to PowerPoint of standard report
Relative Displacement
A new function has been added to remove rigid body motion from time history results. Supported
solvers include RADIOSS, LS-Dyna, and PamCrash. This tool is available under the Safety Tools
menu when the Vehicle Safety Tools preference file is loaded in HyperGraph/HyperView. The
function is very similar to plotting data from HyperView with tracking system on with Plane option.
HyperWorks Desktop 14.0 Release Notes
129
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
130
Proprietary Information of Altair Engineering
Unit Support for Injury Functions
All the safety injury functions under the Injury drop down menu are now unit supported.
no need for manually scaling the curves if units are enabled in HyperGraph.
There is
Below is an example for Clip. Without units enabled, you need to manually define the scale factors
for the curve since the expected units are g vs sec.
With Units enabled for the session, HyperGraph will recognize the units for curve and appropriately
scale it to give the proper injury result.
HyperWorks Desktop 14.0 Release Notes
131
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
132
Proprietary Information of Altair Engineering
CAD and Solver Interfaces
HyperWorks Desktop 14.0 Release Notes
133
Proprietary Information of Altair Engineering
Abaqus Interface 14.0 Release Notes
Highlights
Transformation and Position entity is added to support *NMAP. New elements related to fluid and
temperature analysis have been added. Complete support for *Parameter.
*NMAP keyword Support
•
Transformation and Position entity is added to support *NMAP keyword.
•
Transformation entity can be used to define translation, rotation and scale operations.
•
The position entity takes multiple transformations and applies to a NSET.
•
Export option is toggle on by default and will remove transformation and export *NMAP
keyword to the solver deck.
Support of *PARAMETER
•
Create, edit and reference of *PARAMETER in other keywords using Entity Editor.
•
*Parameter can be imported/exported to solver input deck.
•
The parameter defined in HyperMesh can be seamlessly imported into HyperStudy.
•
Parameter can be a double, integer, string, double expression or integer expression.
•
Parameter can be created from both the Model and Solver browser.
Box Trim Utility
The Box Trim utility in the Abaqus user profile has undergone significant updates. It can now
remove unused entities and automatically update entities which pass through the box trim – the
objective is to ensure a run ready deck post box trim.
Part Replacement
•
Quickly replace a part with either an existing part in your model or a part from an
external file.
•
Property, material, contacts, loads, special elements and sets will be replaced to new
component.
New Element Type
•
Fluid analysis elements FC3D4, FC3D5, FC3D6 and FC3D8 are supported.
•
Thermal Analysis elements C3D4T and C3D6T are supported.
HyperWorks Desktop 14.0 Release Notes
134
Proprietary Information of Altair Engineering
Table Entity
•
COOR3D (Distribution_Orientation) and Angle (Distribution_Angle) card image is added to
the *Distribution keyword. The *Orientation keyword is updated to select the table entity.
•
*Spectrum used in Response spectrum analysis. This keyword is mapped to table entity.
*response spectrum is updated to select the table entity.
Initial Condition for Temperature
Add new options Gradient across shell Section and Define shell/Beam temperature points.
•
Gradient across shell Section can be used to define Initial temperature at multiple
temperature points.
•
Define shell/Beam temperature points can be used to define Initial condition as
Temperature gradient across shell/beam section.
Fastener Improvement
*Fastener can be define by creating element at the provided set of nodes location or solver can
generate the elements. Prior to 14.0 only *fastener with element was supported. Added support for
mesh independent fastener.
Contact Comparison Tool
Instead of creating surface for *Tie, solver can generate the master and slave based on the
tolerance value. This tool can be used for visualization of these connection in HyperMesh. If the
Nastran file is converted to Abaqus then you can retain the RBE and compered with the solver
generated Tie.
New Keywords Supported
•
*Spectrum
•
*RESPONSE SPECTRUM
•
*SELECT EIGENMODES
•
*MODAL DAMPING
•
*FILTER option is supported for Field Output
•
*Parameter
•
*NMAP
HyperWorks Desktop 14.0 Release Notes
135
Proprietary Information of Altair Engineering
Resolved Issues
•
Fixed a Tcl error in Abaqus Contact Manager Shell to Solid Coupling while selecting either
master or slave entity with space in their name.
•
When select an output block, its request types (ODB, fil, or dat) will be highlighted in step
Manager. This avoid from users trying one by one to see to which option the output block
belongs.
•
Output Section Thickness “STH” and Plastic strain (PEEQ, PEEQT, PEMAG) is added for
element output.
•
Fixed the extra line that was added during export for *EOS under *Material.
•
Support the import and export of *ORIENTATION option defined in *Kinematic coupling.
This issue is exist if the *kinematic coupling is defined on a set.
•
Supported the option “Coupled slave nodes” for the keyword *Contact Pair.
•
Supported the option “COMBINE=DIFFERENCE” for the keyword *Surface.
•
Supported the option “ELEMENT DELETION=INSTANTANEOUS” for the keyword *Section
Controls.
•
Supported the option “INITIAL GAP OPENING” for the keyword *Section Controls.
•
Supported the option “COHESIVE COMPRESSION DAMAGE” for the keyword *Section
Controls.
HyperWorks Desktop 14.0 Release Notes
136
Proprietary Information of Altair Engineering
ANSYS Interface 14.0 Release Notes
Highlights
Enhancements have been made in the ANSYS interface to improve the modeling and visualization of
models to solve.
•
Mesh modeling enhancements
•
Contact Manager enhancements which enable users to set ANSYS surface elements with
ease and store Contact Manager settings for future use.
Element Type Selection
When creating a mesh in previous versions of HyperMesh, you had to first select an element type of
the appropriate element configuration using the Element Type panel, then you had to attach an ET
Type (sensor) card to the component. This repetitive process verified that the ET Type matched that
of the element type selected in the Element Type panel.
In HyperMesh 14.0, you will only be required to attach the correct ET Type (sensor) to the
component. The generated mesh will have the same element type as the component as long as the
mesh configuration matches the element type. You will no longer be required to duplicate this
information in the Element Type panel, therefore making the Element Type panel obsolete. This
panel can still be used to review the element type created for a mesh.
To change the element type, you will need to change the ET Type attached to the component. As
long as the mesh configuration matches the element type, the elements will be updated. This
enhancement has made the Update button obsolete, therefore it has been removed from the
Element Type panel.
The status bar can be used to verify that the component is defined correctly. If a component has
valid elements but does not have an ET Type attached, the status bar will read, “Attach HM_COMP
card image and ET Type” when the component is selected in the Model or Solver browsers. The
status bar will also display an error if the element configuration and the ET Type do not match.
Enhancements have been made to make updating the mesh easier after any mesh updating
operations have been performed, such as translating, copying, organizing, and so on. By making
sure that the element type is the same as the ET Type attached to the component the mesh can be
easily updated.
However, if a component does not have an ET Type attached or if the ET Type attached to the
component is different from the configuration of the mesh being created, the mesh can still be
created but the element type will be assigned the type set in the Element Type panel.
New Element Type panel: Use this for review only
HyperWorks Desktop 14.0 Release Notes
137
Proprietary Information of Altair Engineering
Use Entity Editor > Component > Type to set the Element type
ANSYS Contact Manager Enhancements
Two new features have been added to the ANSYS Contact Manager.
1. The ANSYS Contact Manager can now be used to create and manage the ANSYS surface
elements: SURF151, SURF152, SURF153, SURF154, SURF251, and SURF252.
The ANSYS Contact Manager has a new tab, Surface Elements, which enables users to review
existing surface element components and create new surface element components of types: thermal
surface elements, structural surface elements, and radiosity elements. 2D surface elements can be
created on the edges of plane elements, and 3D surface elements can be created on the faces of
solid elements. Extra nodes can also be attached if the surface element type selected supports the
Attach Extra Node option.
HyperWorks Desktop 14.0 Release Notes
138
Proprietary Information of Altair Engineering
This tool works similarly to the existing Contact Pairs tool in the Contact Manager. Users must select
components and then select elements from the selected components to create surface elements on
the faces or edges of the elements. Element key options, properties, and material properties can
also be added in their respective tables that appear once the base elements have been selected.
In the ANSYS Contact Manager, an option has been added to enable users to save the Contact
Element Key options, Real Sets (properties), and material settings they have defined for contact
pairs. This enhancement will save time when creating new contact pairs with the same Key options,
Real Sets (properties), and material settings.
Once the underlying elements of contact and target pairs have been selected, the Contact Manager
prompts users to select applicable Key options, Real Sets (properties), and material settings. When
finished, click Save Keyopts (Target Component Details dialog), Save Real Consts (Contact Property
dialog), and Save Material (Contact Material dialog) to save the setting they have defined for future
use. The next time a user creates a new contact pair, the settings they defined earlier are
automatically applied. To restore the default settings, click Reset Defaults. All of the settings are
saved in a configuration file located at:
<installation\hm\scripts\ansys\ContactManager\contactpair\SavingKeyoptionsAnsys.csv.
Users can edit this file directly if they choose.
Midsurface Mesh Tool in ANSYS Interface
The Midsurface extraction and meshing tool, located at Mesh > Create > Midsurf Mesh, is now fully
supported for ANSYS interface with thickness assignment options. The thickness assignment options
REAL SET and SECTYPE are only available for in the ANSYS user profile. Components, and properties
on components are the available options as ANSYS interface only allows the indirect assignment of
thickness.
The REAL SET option is available for legacy ANSYS elements such as SHELL63, where a thickness is
assigned to elements.
For by REAL SET property and REAL SET, thickness from geometry is mapped to elements by
creating a property card and assigning it a thickness. The property card will be assigned to the
component of the element. The SECTYPE option can be used for the generation of new ANSYS shell
elements such as SHELL181. Thickness from geometry is mapped to the Section card SECDATA with
the type SHELL. The thickness value is mapped to the TK: thickness value in the SECDATA card, and
creates only one layer. The section card is then assigned to the component of the element.
All of the other options perform the same as in the general HyperMesh profile.
Conversion of Beam Elements
If CBEAM is associated with PBEAM/PBEAML, then the properties within those cards are converted to
ANSYS SECTION with the type BEAM. OptiStruct/Nastran beam cross sections of types: BAR, CHAN,
HAT, I, T, ROD, and TUBE are converted to ANSYS equivalent beam sections.
CBEAMs are converted to ANSYS BEAM188 elements.
OptiStruct/Nastran Z and BOX sections are converted to ANSYS ASEC beam sections. CHAN, Z, and
BOX sections are converted only if PBEAML has a HyperBeam section attached. PBEAM is converted
to ANSYS ASEC Section if HyperBeam sections are not attached to the property card. OptiStruct
NSM is converted to ANSYS ADDMAS.
Limitation: In this current version of the conversion tool, section offsets are not considered.
HyperWorks Desktop 14.0 Release Notes
139
Proprietary Information of Altair Engineering
Conversion of Shell Thickness: PSHELL and PSHEAR
In earlier releases, PSHELL and PSHEAR properties are converted to ANSYS SHELL63 (if elements
are first order) and SHELL93 (if elements are second order). These elements are considered legacy
elements, and are not used by most users. Therefore in version 14.0,PSHELL and PSHEAR properties
are converted to ANSYS SECTIONS with section type SHELL. Thickness is now mapped to the TK
value in the SECDATA cards of the SHELL SECTION. CTRIA3 and CQUAD4 elements are now
converted to SHELL181 instead of SHELL63 and CTRIA6 and CQUAD8 elements are now converted
to SHELL281 instead of SHELL93.
Entity Editor Customization
In previous releases, the ANSYS Entity Editor contained customizations for the Et Type and Real
Sets entities. In 14.0, the Entity Editor contains further customizations for the Material and SECTION
entities. Tooltip help has been added for the material card MPDATA and BEAM SECTIONS. Each
attribute in the material and MPDATA card has a tooltip help to indicate the type of material property
and the type of input data. Tooltip help has been added to all types of sections supported under
beam section collector. Tooltip help has also been added to other cards related to sections such as
SECOFFSET, SECCONTROLS, SECLOCK.
ANSYS Model Checker
The ANSYS model checker will now recognize contact element pairs that exist in the model. In
previous versions, contact element pairs were reported under the duplicate elements error, which is
incorrect.
Support for Master Degrees of Freedom
The Master Degrees of Freedom used in reduced or Super element generation analysis are now read
in HyperMesh as unsupported data, and will be written to the model file while exporting models from
HyperMesh. Master Degrees of Freedom cannot be created in HyperMesh, currently they can only
be imported and exported to prevent the loss of data.
State Variable Result Type Support in HyperView
HyperView now supports the user defined state variable result type SVAR. These are special result
types that are defined by the user using material subroutines. These results are now available in
HyperView. If a result file already has these results, the users must select the read options Rad
State variable Results – Yes before reading the result file. Once the result file is read in HyperView,
users must select the Result type SVAR from the result type list and pick the variable number from
the drop down menu below Result type. If elemental values are intersected, select the corner results
option and set the Average option to none, or set it to advance if nodal average values are required.
These results type are supported as scalar results in HyperView.
HyperWorks Desktop 14.0 Release Notes
140
Proprietary Information of Altair Engineering
Resolved Issues
•
Issue with ANSYS Pretension Bolt utility where load orientation assignment was wrong
when user uses 1D bolt option is fixed now.
•
Order of entity sets is now maintained so that sets of sets (exported as CMGRP card) are
exported at the end as these card point to the entity sets (exported as CMBLOCK) and
these should be defined first in the model file. Also second or higher level of sets of sets
are not supported in earlier release but in this release user can create, import and
exports sets of sets up to 5 levels.
•
All local system IDs were renumbered even though it was not required for the systems
with IDs >10. Now renumbering occurs only on those IDs <10. The smallest available
system ID will be assigned if it is created with ID <10.
•
Issue with KEYOPTION definitions of BEAM44 element type where descriptions for
KEYOPTS7 and KEYOPTS8 were wrong have been corrected.
•
LSWRITE keyword issue where if removed from the model and reimported back to
HyperMesh then the reader stops working is fixed.
HyperWorks Desktop 14.0 Release Notes
141
Proprietary Information of Altair Engineering
CAD Interfaces 14.0 Release Notes
Updated CAD Version Support
The following CAD versions are newly supported
•
CATIA v5-6R2015 (R25)
•
Parasolid 27.0.172, for both import and export
•
PTC Creo 2.0 M140 and 3.0 M040
•
SolidWorks 2015 (2014 on MAC)
•
UG NX 10.0. Support for NX 6.5, 7.0, 7.5 and 8.0 libraries has been removed from the
native reader. However, older NX files can still be imported using any of the supported
libraries (9.0, 9.5 or 10.0), or via the third-party reader.
CATIA Publications
CATIA publications can now be imported as HyperMesh regions.
publication are added as references to the region.
The entities referenced by the
Parasolid and NX Native Reader Robustness
Parasolid import and export, and NX import via the native reader, have been significantly improved
via the use of native Parasolid libraries. The third-party Parasolid import/export available in
previous releases is no longer in use.
New Inspire Reader
HyperMesh now supports reading .stmod files from Inspire 2014 and earlier.
Metadata Support
Additional metadata is now supported during import for ACIS, CATIA, JT, NX, Parasolid, ProE,
SolidWorks and STEP formats. This metadata can be used for data transfer between CAD and CAE,
as well as in process automation.
CAD Export
CAD export has been enhanced for JT, Parasolid and STEP.
•
The version of the exported file can now be chosen.
•
Options for how the geometrical entities are named in the exported CAD file are now
available.
•
JT now supports assemblies both in "per part" and "monolithic" modes.
HyperWorks Desktop 14.0 Release Notes
142
Proprietary Information of Altair Engineering
•
The unit system is now more explicitly queried at export, to ensure proper selection by
the user.
Resolved Issues
•
Addressed model specific defects and errors.
HyperWorks Desktop 14.0 Release Notes
143
Proprietary Information of Altair Engineering
EXODUS Interface 14.0 Release Notes
Highlights
The EXODUS interface enables you to store a large amount of topological and result data in a binary
format for finite element analysis.
In HyperMesh, the import and export of EXODUS files is supported in the EXODUS interface. An
EXODUS file (*.ex, *.exo, *.ex2) can be read using the Import tab, and the finished model can be
written using the Export tab.
EXODUS supports the following types of entities, which can be created from the Solver browser:
•
Nodes
•
Element Blocks (Components)
•
Node Sets (Sets)
•
Side Sets (Contact Surfaces)
•
Coordinate Frames (Systems)
HyperWorks Desktop 14.0 Release Notes
144
Proprietary Information of Altair Engineering
LS-DYNA Interface 14.0 Release Notes
Highlights
This release includes several usability improvements for HyperMesh LS-DYNA interface: A new entity is
introduced for Constrained Extra Nodes and SET of type COLLECT are now supported.
New Entity for Constrained Extra Nodes
The constrained extra nodes entity is newly introduced in 14.0. The following keywords are mapped
to this entity: *CONSTRAINED_EXTRA_NODES_NODE; *CONSTRAINED_EXTRA_NODES_SET.
These keywords were supported prior to 14.0 but were mapped to a different entity (group).
Upon import the following behavior is implemented:
•
Solver deck: these keywords will be automatically mapped to the new entity without loss
•
Legacy HyperMesh file: these keywords will be mapped from the old to the new entity
without loss
Model Checker Enhancement
A number of enhancement have been made to the Model Checker:
•
Invalid definition of *CONSTRAINED_RIGID_BODIES will be reported as an error
•
Unresolved IDs reference in set and components are now reported as warnings
•
Checking for untied nodes is faster and more accurate. In the right click contextual menu,
added the possibility to create a set from the nodes found to be untied by HyperMesh
Reader Enhancements
•
Upon import of the keyword *CONSTRAINED_RIGID_BODIES, HyperMesh will report a
warning if the master and/or slave part ID are not defined.
•
When a field is unsupported but the value in this field is null, HyperMesh will not report a
warning anymore.
Curve Editor
The Curve Editor now shows the curve ID and the X and Y scale factor applied on *DEFINE_CURVE.
*DEFINE_TABLE is not listed in the Curve Editor anymore.
HyperWorks Desktop 14.0 Release Notes
145
Proprietary Information of Altair Engineering
Set Collect
Set of type collect are now supported. The concept of master and child set collect is introduced to
allow multiple sets of type collect to share the same ID. The COLLECT option is currently supported
for all variants of the following set type:
•
*SET_NODE
•
*SET_PART
•
*SET_BEAM
Support of ALIAS for LS-DYNA Materials
Supported ALIAS (three digits numerical designation) for material. Earlier these were listed as
unsupported cards upon reading. Now HyperMesh can read these materials and map them to the
corresponding descriptive designation. For examples:
•
*MAT_001 is equivalent to *MAT_ELASTIC
•
*MAT_009 is equivalent to *MAT_NULL
•
*MAT_020 is equivalent to *MAT_RIGID
•
*MAT_024 is equivalent to *MAT_PIECEWISE_LINEAR_PLASTICITY
Newly Supported Keywords
•
*AIRBAG_SHELL_REFERENCE_GEOMETRY (I/O only)
•
*CONTACT_GUIDED_CABLE
•
*DAMPING_FREQUENCY_RANGE_DEFORM
•
*DATABASE_MASSOUT
•
*DEFINE_STOCHASTIC_VARIATION
•
*ELEMENT_SHELL_COMPOSITE_LONG
•
*EOS_TABULATED_COMPACTION (*EOS)
•
*INITIAL_VELOCITY_GENERATION_START_TIME
•
*LOAD_GRAVITY_PART
•
*MAT_ADD_THERMAL_EXPANSION
•
*PART_COMPOSITE_LONG
•
*MAT_JOHNSON_COOK_STOCHASTIC
•
*MAT_PLASTICITY_WITH_DAMAGE_STOCHASTIC
•
*MAT_TAILORED_PROPERTIES (MAT_251)
•
*MAT_CONCRETE_DAMAGE_REL3 (*MAT_072R3)
HyperWorks Desktop 14.0 Release Notes
146
Proprietary Information of Altair Engineering
Updated Keywords
The following keywords were updated up to 971 R7:
•
*AIRBAG_LINEAR_FLUID
•
*AIRBAG_PARTICLE
•
*AIRBAG_WANG_NEFSKE_OPTIONS
•
*BOUNDARY_FLUX_SET
•
*CONSTRAINED_GENERALIZED_WELD
•
*CONSTRAINED_RIGID_BODIES
•
*CONTACT_FORCE_TRANSDUCER
•
*CONTACT (Optional card E)
•
*CONTACT_SURFACE_TO_SURFACE
•
*CONTROL_CONTACT
•
*CONTROL_IMPLICIT_DYNAMICS
•
*CONTROL_THERMAL_TIMESTEP
•
*DAMPING_FREQUENCY_RANGE
•
*DEFINE_TRANSFORMATION
•
*INCLUDE_STAMPED_PART
•
*INITIAL_STRESS_SHELL
•
*LOAD_BODY_GENERALIZED
•
*MAT_ELASTIC_PLASTIC_THERMAL (*MAT_004)
•
*MAT_ELASTIC_VISCOPLASTIC_THERMAL (*MAT_106)
•
*MAT_FABRIC (*MAT_34)
•
*MAT_FORCE_LIMITED (*MAT_029)
•
*MAT_GENERAL_NONLINEAR_6DOF_DISCRETE_BEAM (*MAT_119)
•
*MAT_GURSON (*MAT_120)
•
*MAT_MODIFIED_PIECEWISE_LINEAR_PLASTICITY (*MAT_123)
•
*MAT_NONLINEAR_ORTHOTROPIC (*MAT_40)
•
*MAT_ORTHOTROPIC_VISCOELASTIC (*MAT_086)
•
*MAT_PIECEWISE_LINEAR_PLASTICITY (*MAT_24)
•
*MAT_PLASTICITY_COMPRESSION_TENSION (*MAT_124)
•
*MAT_RIGID (*MAT_20)
•
*MAT_SAMP-1 (*MAT_187)
•
*MAT_SCHWER_MURRAY_CAP_MODEL (*MAT_145)
•
*MAT_SIMPLIFIED_RUBBER/FOAM (*MAT_181)
HyperWorks Desktop 14.0 Release Notes
147
Proprietary Information of Altair Engineering
•
*MAT_SPOTWELD (*MAT_100)
Resolved Issues
•
The association between node/element ID and description in
*DATABASE_HISTORY_OPTION_ID is maintained when some of these nodes/elements
are deleted.
•
HyperMesh was expecting the options in *CONSTRAINED_JOINT (FAILURE, LOCAL…) to
be defined in a specific sequence. The keyword will now be imported irrespective of the
input sequence.
•
In the Export tab, an option allows you to control the export of the include file reference
depending on the export status. This option does not apply to INCLUDE of type
TRANSFORM.
•
The local coordinate system defined in *MAT_RIGID was not imported correctly if the
components of the vector (V1,V2,V3) were equal to 0 instead of being blank.
•
The transformations were not applied in the correct sequence when both
*NODE_TRANSFORM and *INCLUDE_TRANSFORM were used.
•
Unresolved elements were not supported in *DATABASE_HISTORY leading to loss of data
in I/O.
•
Exporting a model with a large number of connectors was significantly slower than
without.
•
*MECHANISM was exported before *END.
•
Resolved several I/O issues in the following keywords:
− *SENSOR_CONTROL
− *SENSOR_DEFINE_CALC-MATH
− *MAT_GENERAL_SPRING_DISCRETE_BEAM
•
The ID field was set to 8 instead of 10 for the following keywords:
− *LOAD_SEGMENT
− *LOAD_SHELL_ELEMENT
•
Curves referenced in loads (*LOAD_NODE_POINT…) were not exported with the export
“displayed” option.
•
Legacy HyperMesh file:
− Conversion of *DEFINE_VECTOR_NODES was incorrect and lead to loss of data
− Old HyperMesh file containing *SET_SHELL are converted to *SET_SHELL_LIST
•
Conversion from OptiStruct and Nastran to LS-DYNA:
− Converting connectors linked to assemblies was causing an application error
− SET ELEM are now converted to *SET_SHELL_LIST instead of *SET_SHELL
− Thickness visualization was not correct after conversion
− Offset defined in QUAD4 elements was not considered
− An application error occurred if there was empty components in the model
HyperWorks Desktop 14.0 Release Notes
148
Proprietary Information of Altair Engineering
•
When converting a model from LS-DYNA to RADIOSS, an application error occurred if
there was “unresolved id” in the model.
HyperWorks Desktop 14.0 Release Notes
149
Proprietary Information of Altair Engineering
Nastran Interface 14.0 Release Notes
Nastran User Profile Separation
Nastran user profile is now separated as MSC Nastran and NX Nastran.
Symbolic Substitution
Symbolic substitution is supported as a parameter in MSC Nastran user profile for properties and
materials.
MSC Nastran 2013 Contact Cards
New MSC Nastran contacts cards and contact properties of version 2013 are now supported in the
MSC Nastran user profile. The following cards have been added:
BCBODY1, BCONECT, BCTABL1, BCONPRG, BCONPRP and BCBDPRP
MSC Nastran Sol 200 Cards
MSC Nastran Sol 200 cards are supported in MSC Nastran. The following cards have been added:
DVPREL1, DVPREL2, DVCREL1, DVCREL2, DVMREL1, DVMREL2, DCONADD, DCONSTR, DESSUB,
DESGLB and DOPTPRM
Newly Supported Keywords in MSC Nastran Profile
PACBAR
ERPPNL
ERP
RESTART
PARAM – SKINOUT, SS2GCR, VMOPT, MFLUID
SPCR
SPC1
BCPROP
BOLT
NONLINEAR
NOLIN1
NLSTRESS
PSHELL1
MONPNT
DAMPING
HYBADAMP
CTRLDEF
TABLES1 – TYPE 2
HyperWorks Desktop 14.0 Release Notes
150
Proprietary Information of Altair Engineering
FFLUID in PSOLID card
RROD
INCL
General Enhancements
•
The Part Replacement tool is now supported in both MSC and NX Nastran profiles.
•
The Box Trim macro was enhanced to support solver specific changes in MSC and NX
Nastran profiles.
•
New options were added to the Solver option in the Import browser to read ANSA and
PATRAN comments. The option is ON by default.
•
A new check was added to the Model Checker to identify PSHELL & PSHLN1 referring to
different MID’s.
•
A new Solver option in the Import browser to import models with ANSA and PATRAN
comments; by default, option is ON.
•
The Export template and Import reader were enhanced to support long format in entities.
HyperView Reader Enhancements
•
Support for FEMZIP Nastran result files
•
Nastran OP2 result file generated with option PARAM,POST,1 is supported
•
Reader enhanced to support Composite Stress from NASTRAN 2012 generated OP2 files
•
Support GPFORCE results in OP2 files for frequency response
•
Support of 1D Element Forces (v) with Corner Data in XDB files
•
Support of CSHEAR and CBEAM results as corner data in XDB files
•
Support of ANSA and PATRAN comments Nastran Model reader options; by default, option
is ON
Resolved Issues
•
Nastran template to export CQUAD elements in sequential order.
•
BSURF export and import issue.
•
Performance issue while running ‘unused sets’ check.
•
Mass was lost while importing CMASS4; mass is assigned to CMASS4 now.
•
Blank line export issue with BCTABLE card.
•
Nastran template to export IC card for SOL112.
•
Abaqus > Nastran solver conversion resolved issues.
− Performance improvement while converting models with beam elements.
− Error in DOF mapping of SPRING1 to CELAS1 element type is resolved.
•
Import reader issues while Nastran files with PATRAN comments.
HyperWorks Desktop 14.0 Release Notes
151
Proprietary Information of Altair Engineering
•
Performance issue related to updating materials to multiple PCOMP property.
•
PCONVM is now listed in solver browser.
•
BCTABLE is now read correctly.
•
HyperView reader to display composite stress and strain from Nastran2012 OP2 file.
HyperWorks Desktop 14.0 Release Notes
152
Proprietary Information of Altair Engineering
PAM CRASH 2G Interface 14.0 Release Notes
Highlights
This release includes several usability improvements: Entity Editor is now available, allowing users to
create and edit options for keywords with filtered selection. Pamcrash2G2012 is now supported.
Entity Editor
•
Create and edit options are now available for all keywords mapped to named HyperMesh
entities, such as component, property, material, contact, rigid wall, control volume, load
collectors, system collectors, vector collectors, sets and sensors.
•
New Entity Selection browser is introduced to select existing entities in the current
session with options to filter based on name, ID, card image and so on.
•
Entity Selection browser is auto filtered to show entities of valid solver keywords for
selection to create error free solver keywords. This is on by default.
•
Show/hide/isolate/Xref functions are available for each referenced entity in the Entity
Editor for quick graphics review.
•
Provided tooltips for the attributes in the Entity Editor.
Support of Pamcrash2G2012
A new Pamcrash2G2012 user profile is now available. Pamcrash 2002-2008 templates are available
in the installation and can be loaded; however they are no longer maintained.
Support of SECURE
I/O support is provided for SECURE PART, MATER, PLY and FUNCTION.
Transformation Enhancements
Transformation are now automatically applied during the import and disapplied at export. I/O
support is provided for NPOS.
Newly Supported Keywords
The following keywords were supported in Pamcrash 2012:
•
Contact type 154
•
ICTRL
•
FPM turbulence model
•
LCTRL
HyperWorks Desktop 14.0 Release Notes
153
Proprietary Information of Altair Engineering
•
NSMAS2
Updated Keywords
The following keywords were updated up to Pamcrash 2012:
Control Cards:
•
EIGEN
•
ECTRL
•
OCTRL
•
FPCTRL
•
SPCTRL
•
TCTRL
Others:
•
BAGIN (FPM_OPTION with VENT_MODEL)
•
Contact type: 33, 34, 36, 37, 46, 54
•
Material type: 143 and 151
•
MTOCO
•
Ply model type 0 and 7
•
RUPMO model type 7
•
SENPT
•
THLOC
Resolved Issues
•
Importing a model with OTMCO without WEIGHT card defined caused the reader to crash.
•
Reading of unsupported control cards caused the reader to crash. The unsupported
control cards will now be skipped and a warning message will be reported.
•
When a node is referred in an elements but not defined in the model, this node is skipped
and an error is message is reported.
•
Resolved I/O issues for the following keywords:
− CONLO
− CNTAC Type 36
− MATER Type 24, 25, 62, 116, 161, 214, 222, 225, 302, 304,
− MTOJNT
− PART of type SHELL
•
Added .inc as a valid extension in the Import and Export tab.
HyperWorks Desktop 14.0 Release Notes
154
Proprietary Information of Altair Engineering
RADIOSS Interface 14.0 Release Notes
New User Profile
New user profile RADIOSS Block 140 is now available.
Parameter Support
/PARAMETER is now supported for RADIOSS 12.0 and later.
•
Create, edit and reference /PARAMETER in other keywords with the Entity Editor.
•
Parameter type REAL, INTEGER, REAL_EXPR, INT_EXPR is supported. Parameter type
TEXT is not supported.
•
Parameter expressions are evaluated at import and are updated during the session.
•
Parameters of type EXPR are created upon import of parameter references with a minus
sign (-) before the prefix “&”.
•
All FE entities can be parametrized except loads, legal values, elements and node
coordinates.
•
Parameterization of entity ID and attribute of type entity is not supported.
•
Unsupported parameterized entities are replaced with corresponding values during
import, to avoid the loss of data.
•
The variables parameterized will be grayed out in the Card Editor so that it cannot be
changed.
Newly Supported Keywords
Supported up to RADIOSS Block 130, 140:
•
/FAIL/NXT
•
/UPWIND (Engine)
Supported as table entity in the Model browser in RADIOSS Block 110, 120, 130, 140
•
/INIBRI/STRA_F
•
/INIBRI/STRESS
•
/INIBRI/STRS_F
•
/PARAMETER/GLOBAL/REAL
•
/PARAMETER/GLOBAL/INTEGER
•
/PARAMETER/GLOBAL/REAL_EXPR
•
/PARAMETER/GLOBAL/INT_EXPR
Supported in RADIOSS Block 130, 140
•
/DT/THERM
•
/FAIL/TAB1
HyperWorks Desktop 14.0 Release Notes
155
Proprietary Information of Altair Engineering
•
/MAT/LAW81
•
/MAT/LAW83
Supported in RADIOSS Block 110, 120, 130, 140
•
/ANIM/VECT/FREAC
Updated Keywords
The following keywords were updated up to RADIOSS Block 140:
•
/FAIL/JOHNSON
•
/IMPL/SOLVER
•
/INISHE/STRS_F/GLOB
•
Interface type: 2,3,5,7,10,11,18,19,20 and 21
•
Material law: 20, 51, 58, 77 and 80
•
Property: SPH and type16
Resolved Issues
•
PCOMPG are converted to /PROP/SH_SANDW when converting from OptiStruct to
RADIOSS.
•
When converting a Nastran model to RADIOSS, an application error would occur if there
were some unresolved IDs in the model to be converted.
•
When converting from OptiStruct to RADIOSS, an application error would occur if there
was a “*” in the component name.
•
GRNOD/GENE was not shown in Solver browser.
•
Corrected the position of Einf and COE in /MAT/LAW78 under RADIOSS Block 130, 140.
•
Solver conversion from OptiStruct to RADIOSS gives application error due to unresolved
IDs.
•
Added the blank line in /MAT/LAW51 for Iform=3 under RADIOSS Block 120, 130, 140.
•
For the transformation of type translation, if the vector was defined with 2 nodes, the
direction in which the displacement was applied in the opposite direction compared to the
solver.
•
Now Model browser's create submenu lists entities in alphabetical order.
HyperWorks Desktop 14.0 Release Notes
156
Proprietary Information of Altair Engineering
OptiStruct Interface 14.0 Release Notes
Rotor Dynamics Cards
The cards required for Rotor Dynamics analysis in OptiStruct is now supported in the HyperMesh
OptiStruct interface. The following cards have been added:
RGYRO, ROTORG, RSPINR, UNBALNC, PARAM_WR3, PARAM_WR4, PARAM_GYOAVG and RSPEED
Tooltip Help in OptiStruct Interface
Tooltip help is provided for OptiStruct cards in the Entity Editor to help you choose the right option.
This avoids you from needing to open the full solver online help. View the Tooltip help by moving the
cursor on the key options in element type or property options in property card.
Lattice Optimization Card Support
A lattice optimization card is now supported in the Topology panel. Lattice control parameters are
supported under a new subpanel with Lattice params. The following cards have been added:
LATTICE and all parameters in LATPRM.
CONTACT Enhancements
•
The following options are supported under CONTACT card: CLEARANCE, TRACK with
SMALL and FINITE option, SMOOTH.
•
PCONT card: Negative value (STIFF = Real < 0.0) to define stiffness scaling factor.
SECTION Card Support
Defines a specific face of a cross-section of the model. The section is determined through a set of
grid points and the particular face is specified by a set of elements.
The Resultant Section Force and Resultant Section Moment can be specified as responses via
RTYPE=RESFORCE in DRESP1. The ATTA field specifies whether Resultant Section Force components
(1,2,3) or Resultant Section Moment components (4,5,6) are selected. The ATTi fields should
reference the Identification Numbers of the SECTION Bulk Data Entry that define the cross-section.
Solver Conversion Enhancements
Abaqus > OptiStruct
•
Enhanced conversion of TIE contacts
•
Enhanced conversion of Contact Pair
•
Enhanced conversion to map NLGEOM=YES to PARAM,LGDISP,1
•
*MATERIAL, ELASTIC = LAMINA to MAT8 conversion
HyperWorks Desktop 14.0 Release Notes
157
Proprietary Information of Altair Engineering
•
Multiple bug fixes
RADIOSS > OptiStruct
•
Composite property and material conversion
•
PROP/SH_SANDW (TYPE11) is mapped to PCOMP for angle, thickness and material
•
MAT/COMPSH (LAW25) is mapped to MAT9ORT
Axisymmetric Card Support
Axisymmetric elements, property and material are now supported in the OptiStruct interfaces. The
following cards are supported:
CTAXI, CTRIAX6, PAXI and MAT3
Newly Supported Keywords
•
PRETBOLT (OPTI) = YES/NO
•
OUTPUT,H3DSENS
•
CSEAM
•
PSEAM
•
CLEARANCE option in Contact card
•
STIFF option in PCONT card
•
FTYPE option in PCONV
•
PARAM, EXPERTNL, AUTO
•
NLHEAT
•
POWERFLOW
•
PARAM, EXCEXB
•
PARAM, LFREQFL
•
PARAM, HFREQFL
•
PARAM, BUSHSTIF
•
PARAM, ELASSTIF
•
PARAM, BUSHTLMT
•
PARAM, BUSHRLMT
•
PARAM, ELASTLMT
•
PARAM, ELASRLMT
•
PARAM, MDK40PT
•
PARAM, GRDPNT
•
PARAM, EXCEXB
HyperWorks Desktop 14.0 Release Notes
158
Proprietary Information of Altair Engineering
•
PARAM, FLLWER
•
PARAM, EXTOUT, DMIGOP4, DMIGOP2
•
PARAM, BUSHT
•
PARAM, PELAST
•
PARAM, HGHCMPOK
•
PARAM, XPOST
•
PARAM, AMSE4CMS
•
PARAM, CDITER
•
PARAM, CDPRT
•
PARAM, CDPCH
•
PARAM, PRTRET
•
PARAM, PRTDES
•
SECTION
•
RESFORCE option in DRESP1
•
DGRIDB, DGRIDL options in DRESP2 and DRESP3
•
CELLIN and CELLOUT options in DRESP3
•
ADJUST=ALL option in Contact and TIE
•
MFLUID
•
CFAILURE
•
ELIST
•
PEAKOUT
•
LATPRM
•
LATTICE as continuation in DTPL
•
SMOOTH and TRACK option in contact card
General Enhancements
•
The Part Replacement tool is now supported.
•
The Box Trim macro was enhanced to support solver specific changes in the OptiStruct
interface.
•
The Export template and Import reader have been enhanced to support long format in
entities.
•
OptiStruct compression run – New option Compress under run options in OptiStruct
panel.
•
Heat transfer SUBCASE reference in structural SUBCASE through TEMP card.
•
Handling of OMIT card during import and export.
HyperWorks Desktop 14.0 Release Notes
159
Proprietary Information of Altair Engineering
•
New Solver option in the Import browser to import models with ANSA and PATRAN
comments; by default, option is ON.
•
LOCATION option support in STRAIN output.
HyperView Reader Enhancements
•
Support of axisymmetric elements results from OptiStruct generated OP2 files.
•
Reader enhanced to support Composite Stress from OptiStruct generated OP2 files.
•
Support of ANSA and PATRAN comments OptiStruct model reader options; by default,
option is ON.
Resolved Issues
•
Export issue related to Export Displayed option not working correctly.
•
Export issues with DRESP3.
•
LS-DYNA to OptiStruct conversion errors.
•
Abaqus to OptiStruct conversion errors.
•
Correct BNDFIX1 format during export.
•
Summary template can now calculate mass for PCOMP, PCOMPG and PCOMPP.
•
OptiStruct template to export elements in sequential order.
•
Export of DRESP1 for PSD and RMS stresses in conjunction with PBEAML.
•
FATLOAD export to write as blank if TID is not unspecified.
•
CBAR offset does not change now when importing the model.
•
Op2 reader now reads stress results of CTRIAR elements in HyperView.
•
Issues related to Contacts, LoadStep, Property and Material during conversion from
Abaqus to OptiStruct are now fixed.
•
Linear subcase is mapped correctly after conversion from Abaqus to OptiStruct.
HyperWorks Desktop 14.0 Release Notes
160
Proprietary Information of Altair Engineering
Samcef Interface 14.0 Release Notes
.ZYG Macro Support
The macro command .ZYG is now supported as group (contact type) under the Interfaces panel.
This command basically helps you to idealize a full scale model into a cyclic or periodic symmetry
model. It glues a group of slave nodes of one end to a group of master facets at the other end.
In this release, you can also create .ZYG with an automatic mode. In this case no groups of slave
nodes and of master facets are required.
Pretension Manager Support
In this release, a Pretension Manager has been added which enables you to create and edit 1D and
3D bolt loads and bolt sections. Also, the Pretension Manager can be used to review the existing bolt
loads and sections.
You can find it in the Tools menu.
Reader Enhancements
Upon import of a Samcef deck, HyperMesh now recognizes keywords with both upper and lower case
characters.
Provision to Define Temperature Dependent Material Properties
In this release, the material card in HyperMesh allows you to attach a curve or plot to respective
material attributes (For example, Young’s modulus, Poisson’s ratio etc.).
Support of Parameter NEXCE in the Composite Definition
In this current release, you can specify distance as input for NEXCE for .ETA card as well. A similar
parameter was supported under .PHP SHELL from the previous release. This allows you to define the
offset distance of the composite element from its actual center.
.HYP Macro Command is Written Out in a Compact Way
In the current release, both “I” and “J” parameters are used to write out the list of elements under
the .HYP macro. These parameters write only the first and the last element number respectively.
HyperWorks Desktop 14.0 Release Notes
161
Proprietary Information of Altair Engineering
This way of writing allows you to analyze and maintain the solver deck with less effort as it is very
compact.
Enhancements in the TIME Parameter, Related to .SUB Macro Command
In the current release, while defining initial time and final time for a nonlinear analyses using
parameter TIME under .SUB macro command, you can also specify real numbers along with the
inter numbers. Previous releases used to take only integer numbers as input.
Also, a new parameter is added called INTERMEDIATE TIME, where you can specify time steps
between the initial and the final time.
HyperWorks Desktop 14.0 Release Notes
162
Proprietary Information of Altair Engineering
HyperWorks Solvers 14.0 Release Notes
HyperWorks Solvers is a collection of finite element and multibody dynamics solvers for structural,
fluid-dynamics and systems simulation. These solvers can be employed for simulation driven design as
well as design optimization.
OptiStruct
Design and optimization software using finite elements and multibody
dynamics
RADIOSS
Finite element solver for linear and nonlinear problems
MotionSolve
Multibody dynamics solver
AcuSolve
General purpose finite element computational fluid dynamics (CFD) solver
HyperForge Solver New solver targeted for extrusion related open die forging applications
HyperXtrude
Solver
Finite element based solver for analysis and design of resin infusion processes
With the 14.0 release, a renaming of our structural solver products has taken place in order to
accommodate the growing trend of applying optimization technologies more intensively in the product
development process, instead of just single run analysis. Moving forward, our structural and thermal
analysis and optimization product for linear and non-linear events will be called OptiStruct; this
includes analysis disciplines such as linear and non-linear statics, noise and vibrations and thermal
analysis. Our product for highly-nonlinear, typically transient events such as crash, impact, forming or
blast analysis will be RADIOSS. Both codes are developed with a strong focus on the above mentioned
disciplines, and will continue to leverage technology mutually. OptiStruct will continue to leverage the
widely used bulk data input format, and RADIOSS will continue to use the well suited block format.
Moving forward, OptiStruct will also serve as the general framework for optimization involving multiple
physics including CFD and FSI with AcuSolve and multibody dynamics with MotionSolve, and will also
offer API to integrate additional solvers and solutions within a general multi-model framework.
HyperWorks Desktop 14.0 Release Notes
163
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
164
Proprietary Information of Altair Engineering
OptiStruct 14.0 Release Notes
Highlights
Altair® OptiStruct® is a state of the art finite element solver for linear and nonlinear structural
problems. It employs implicit integration schemes for static and dynamic problems. Besides mechanical
loading, heat transfer coupled with structures is also available.
OptiStruct is designed with optimization at the core. The majority of solution sequences are available
for optimization. A wide range of design problems can be solved addressing concept design and design
fine tuning. In addition, RADIOSS and MotionSolve have been integrated to address multi-disciplinary
optimization involving crash and impact, and multi-body systems, respectively. The optimization
capabilities of OptiStruct are innovative and market-leading.
Analysis applications of OptiStruct include Automotive powertrain durability and vibrations, vehicle
interior acoustics, vibrations of satellites, durability of heavy duty and off-road vehicles, component
stress and vibrations analysis, detailed finite element analysis of airplane structures, random vibrations
of ships and buildings, structural behavior of composite wings, buckling behavior, and many other
advanced engineering applications.
Optimization applications of OptiStruct include material layout of structures and parts under static
loads, sheet metal sizing under static and dynamic loads, improvement of acoustic behavior, design of
parts for additive manufacturing, design of composite layups, and more.
The major items for the 14.0 release include:
•
Finite Sliding Contact for Large Displacement Analysis
•
Results at incremental load-steps for Nonlinear Analysis
•
Fast Contact Analysis
•
New Optimization Responses
•
Enhanced Transfer Path Analysis
•
Resolved Issues
HyperWorks Desktop 14.0 Release Notes
165
Proprietary Information of Altair Engineering
Stiffness, Strength and Stability
Nonlinear Analysis Results are now Available at Incremental Load-steps
Small Displacement and Large Displacement Nonlinear Quasi-Static Analysis results are now
available at incremental load-steps using the NLOUT bulk data entry and the NLOUT subcase
information entry. The NINT and SVNONCNV parameters are available to control incremental output.
Finite Sliding Contact is now Available to Simulate Large Sliding at the Contact Interface
Finite sliding contact is now available for Surface-to-Surface (S2S) contact to simulate large sliding
at the contact interface. Finite sliding is activated by setting the TRACK field on the CONTACT entry
to FINITE.
Large Displacement for 1D Elements is now Available
Large displacement support for CROD, CBAR and CBEAM elements is now available. Note that Pin
flags (PA and PB fields) for CBAR and CBEAM elements and Torsion for CROD element (J field on
PROD entry) are not currently supported. 1D bolt pretensioning is now available for Large
Displacement Analysis.
MPC-based Fast Contact is now Supported
MPC-based Fast Contact is now supported for models where contact between parts is the only
source of nonlinearity in the model. MPCs can now be used in conjunction with SUPORT, SPC entries
and PARAM,CDITER to activate MPC-based fast contact.
CONTACT/CGAP(G)-based Fast Contact Analysis is now Available
Fast Contact Analysis is now available for Node-to-Surface (N2S) contact and for CGAP/CGAPG
elements. This is supported for models without material nonlinearity, or friction. Large displacement
nonlinear analysis is not supported. PARAM,FASTCONT can be used to activate CONTACT/CGAP(G)based fast-contact analysis.
Follower Loads are now Supported in Large Displacement Nonlinear Analysis
Follower pressures and forces are now supported in Large Displacement Nonlinear Analysis.
Pressures and forces are now dependent on the deformation with regard to both direction and area
(pressure). The FLLWER bulk data and FLLWER subcase information entries are now available to
activate and define parameters to control follower loading. PARAM, FLLWER is also available.
Nonlinear Convergence Parameters can now be Specified for Large Displacement Analysis
HyperWorks Desktop 14.0 Release Notes
166
Proprietary Information of Altair Engineering
Nonlinear adaptive convergence and time-stepping parameters can now be controlled for Large
Displacement Analysis using the NLADAPT bulk data and NLADAPT subcase Entry. The NCUTS,
DTMAX, DTMIN, NOPCL, NSTSL, and EXTRA parameters are currently available for nonlinear
convergence control.
Time Dependent Loading Input for Nonlinear Quasi-Static Analysis
Time dependent loading for Nonlinear Quasi-Static Analysis is available through the TLOAD1 and
TLOAD2 bulk data entries with table data. The DLOAD subcase entry can be used in an NLSTAT
subcase to reference TLOAD1/TLOAD2 bulk data entries.
Shell-to-Shell and Shell-to-Solid Element Support is now Available for Global-Local
Modeling
Shell-to-Shell and Shell-to-Solid Element support is now available for Global-Local modeling. Both
the local and global models can contain shell elements. They can also be a combination of shell and
solid elements.
Acceleration Loads
Acceleration loads can now be applied to models using ACCEL, ACCEL1, and ACCEL2 bulk data
entries. The ACCEL bulk data entry can be used to apply acceleration loads based on location.
ACCEL1 bulk data entry can be used to apply acceleration loads on specific GRID points by
specifying the particular GRID IDs. ACCEL2 can be used to apply acceleration loads to SETs of GRIDs
in the model.
Rigid Bodies can now be Defined
Rigid bodies can now be defined as element set, grid set, or surface using the RBODY bulk data
entry. MASS and INERTIA continuation lines are also available for mass and inertia properties for the
rigid bodies. The RBADD bulk data entry can be used to define a rigid body as a combination of rigid
bodies defined by RBODY.
Contact Results in OP2 File
Contact results, including Contact Force (v), Contact Pressure (s), and Contact Traction (v) are now
available in the OP2 file using the CONTF bulk data entry.
Contact Area Output is now Available
Contact area output is now available via the CONTF bulk data entry with the OPTI format option.
This is supported only for surface to surface (S2S) contact. The contact area results are output to
the .cntf file.
Beam and Bar Elements Results are now Supported in Random Response Analysis
HyperWorks Desktop 14.0 Release Notes
167
Proprietary Information of Altair Engineering
Power Spectral Density (PSDF) and Root Mean Square (RMS) element stress, strain, and force
results are now available for Random Response Analysis in H3D and OP2 formats for CBEAM and
CBAR elements.
STATSUB(BUCKLING/PRELOAD) can now Reference Small Displacement NLSTAT Subcases
with S2S Contact
STATSUB (BUCKLING/PRELOAD) can now reference small displacement NLSTAT subcases in models
containing S2S contact. Previously, only N2S contact and linear static subcase references were
supported.
Arruda-Boyce Model for Hyperelastic Material
The Arruda-Boyce Model (Model=ABOYCE) is now supported for Hyperelastic materials on the
MATHE bulk data entry. Additionally, reduced forms of the Generalized Mooney Rivlin material model
(Model=MOONEY) are also separately available via Model= RPOLY/MOOR/NEOH/YEOH options.
Enhancements to Hyperelastic Materials
The Poisson’s Ratio (NU), Material Density (RHO), Coefficient of thermal expansion (TEXP), and
Reference Temperature (TREF) fields have now been added to the MATHE bulk data entry.
Table Entries can now be Set to Have a Constant Y-Value Outside the Specified Range
The FLAT field on each Table entry (TABLED1-3, TABLEM1-3, TABLES1, TABRND1, and TABDMP1
Bulk Data Entries) can be set to a non-zero value to activate the constant Y-value option.
Projection points GA and GB for CWELD and CGAPG are now Output in OP2 File
The projection points GA and GB for CWELD and CGAPG are now available in the OP2 file.
New RIGID Entry to Select Rigid Element Processing Method
The RIGID I/O Options entry is now available to select the rigid element processing method,
LAGRAN (LaGrange multiplier method) or LGELIM (LaGrange multiplier method with constraint
elimination). This is applicable to RBAR, RROD, RBE1, RBE2, RBE3, and MPC entries.
Stress and Strain Output for CYPRA Elements in Static Analysis
Stress and Strain output is now available for CPYRA elements in Static Analysis in the OP2 file.
Control Output of .spcd Files
HyperWorks Desktop 14.0 Release Notes
168
Proprietary Information of Altair Engineering
OUTPUT, SPCD, YES/NO is now available to control the output of .spcd files. The default is YES.
Different Default for TFRAC on the CNTSTB Bulk Data Entry
The default value of the tangential stabilization scaling factor with respect to the normal stabilization
(TRFAC) on the CNTSTB bulk data entry has now been changed to 0.1.
Visualize S2S Contact Elements in HyperMesh
When CONTPRM, CONTOUT, YES is specified, S2S contact elements (and large displacement N2S
contact elements) will be output as PLOTEL+RBE3 into the <filename>_contout.fem file for
visualization. This filename_contout.fem file can then be imported into HyperMesh on top of the
base model to visualize the S2S contact.
SPC on RBE3 Dependent Node for Large Displacement Nonlinear Quasi-Static Analysis
SPC is now allowed on the dependent nodes of RBE3’s for Large Displacement Nonlinear QuasiStatic Analysis.
Dynamic Design Analysis Method (DDAM) is now Available
Dynamic Design Analysis Method (DDAM) is now available.
Threshold-Based Output Options are now Available for Element Strain Energy (ESE),
Stress (STRESS) and Temperature (THERMAL) Output
Threshold-based output of results is now supported. The THRESH (absolute threshold), TOP (top
“topn” results), and RTOP (top “rtop” percent of total results) options are now available for Element
Strain Energy (ESE), Stress (STRESS) and Temperature (THERMAL) output.
Thermal Expansion of Rigid Elements is now Available
Thermal expansion coefficient (ALPHA) on the RBE2, RBE3, RROD, and RBAR elements can now be
specified.
Multiple OP2 Files can now be Requested for a Single Model
The POST subcase information entry can be used to request subcase-specific output to separate
files. The TOFILE, label option can be used to define a label to be appended to the model’s filename
in the generated subcase-specific output file. This is currently only supported for OP2 files.
POST,TOFILE should always be used in conjunction with OUTPUT,OP2, FORMAT=OP2, or PARAM,
POST,-1.
Temperature Load Output is now Available for Static Analysis
HyperWorks Desktop 14.0 Release Notes
169
Proprietary Information of Altair Engineering
Temperature load output is now available for Static Analysis via the OLOAD bulk data entry.
Previously, only applied load vector output was supported.
FORCE Results are now Output for CBUSH and CELAS Elements for Transient Analysis to
the H3D, OP2, and PCH Files
FORCE results are now output for CBUSH, CELAS elements for Transient Analysis to the H3D, OP2,
and PCH files.
RJOINT is now Available to Connect Coincident GRID Points
RJOINT is now available to connect coincident GRID points by defining a rigid joint connection
between them. Depending on the value of the CB field, the behavior of the rigid joint can be
switched between hinges, universal joints, spherical joints and so on.
Corner Strains are now Available for Solid Elements
Corner strains are now available for solid elements via the STRAIN(CORNER) entry. The “Corner
Data” check box should be activated in HyperView to view corner results.
Grid Point Strains are now Available
Grid point strains are now available for solid elements using the GPSTRAIN I/O Options entry.
GPSTRAIN is currently only supported for Static Analysis.
Subcase-specific Random Response Analysis
Subcase-Specific Random Response Analysis is now available. The results for Frequency Response
Analysis and Random Response Analysis can now be decoupled. The ANALYSIS=RANDOM option can
be used in a separate Random Response Analysis subcase and corresponding Random Response
results can be requested in this separate subcase. The RANOM Subcase Information entry can be
defined in this separate subcase pointing to RANDPS and RANDT1 entries.
Axial Deformation of GAP Elements are now Output
Axial deformation of GAP elements are now output in the OP2 and PCH files.
Scaling Support for PBUSH Entry
Scaling support for the values on the PBUSH entry is available via the PBUSHT entry. The KSCALE,
BSCALE, GESCALE, and MSCALE flags are available on the TYPE field to scale the corresponding data
(based on frequency) on the PBUSH entry.
MAT9 Entry is now Supported for Large Displacement Nonlinear Analysis
HyperWorks Desktop 14.0 Release Notes
170
Proprietary Information of Altair Engineering
MAT9 entry is now supported for Large Displacement Nonlinear Analysis.
The LOCATE Entry is now Available and RELOC is now Subcase Specific
The LOCATE entry is now available and RELOC is now subcase specific. The LOCATE entry defines
subcase-specific part location within the global-part. LOCATE bulk data entries are activated in each
subcase by the LOCATE subcase entries. The LOCATE bulk data entries reference the identification
number of a RELOC bulk data entry which defines the actual location of the part in the final model.
Linear Bushing Elements are now Supported in Large Displacement Nonlinear Analysis
Linear bushing elements, via CBUSH and CBUSH1D, are now supported in Large Displacement
Nonlinear Analysis. The SPRING continuation line on PBUSH1D is now not mandatory to use linear
CBUSH1D elements in Large Dislacement Nonlinear Analysis. Additionally, the TYPE=KN data on the
PBUSHT entry is not mandatory to use linear CBUSH elements in Large Displacement Nonlinear
Analysis.
Residual Energy Ratio (Epsilon) is now Always Output in the OUT File
Residual Energy Ratio (Epsilon) is now always output in the OUT file. This now does not require the
usage of GPFORCE. Epsilon is not available for a Large Displacement Analysis, Linear Gap and Fast
Contact Analysis.
Contact Friendly Elements are now Automatically Switched ON When Applicable Within
the Model
Contact friendly elements (PARAM, CONTFEL) are now automatically turned on when applicable
within the model. The default is now PARAM, CONTFEL, AUTO if the parameter is not specified in the
model. This will activate contact friendly elements when 2nd order elements with N2S contact are
present in the model.
Turn Off the Check for Negative and Large Compliance in Optimization
PARAM, HGHCMPOK is now available to turn off the check for negative and large compliance in
optimization. This will bypass the ERROR in optimization runs even if the compliance is large or
negative.
PBUSHT’s and PELAST’s in the Model can now be Turned ON/OFF
Generalized spring and damper property (PBUSHT) and elastic spring property (PELAST) in the
model can now be turned ON/OFF using PARAM, PBUSHT and PARAM, PELAST, respectively.
Large Displacement Nonlinear Quasi-Static Analysis can now be Subcase-Dependent
HyperWorks Desktop 14.0 Release Notes
171
Proprietary Information of Altair Engineering
Subcase-Dependent Large Displacement Quasi-Static Analysis can now made subcase-dependent by
using NLPARM(LGDISP) = SID in a specific subcase that selects a corresponding NLPARM bulk data
entry.
New Contact Stiffness Penalization Options are now Available for Nonlinear Contact
Analysis
The exponential and quadratic contact stiffness penalization options are now available on the PCONT
entry for Nonlinear Contact Analysis. The STFEXP continuation line can be used to activate the
exponential stiffness penalization and the STFQDR continuation line can be used to activate the
quadratic stiffness penalization.
Cylindrical Coordinate System is now Supported for Gravity Loading
Cylindrical coordinate system is supported on the CID field of the GRAV bulk data entry.
Multiaxial Fatigue Analysis is now Available
Multiaxial Fatigue Analysis is now available. The MAXLFAT field on the FATPARM bulk data entry can
be set to YES to activate Multiaxial Fatigue Analysis. The MDMGMDL continuation line can be used to
define multiaxial fatigue damage models on the DM1, DM2, and DM3 fields. The MATFAT bulk data
entry has now been enhanced with parameters and coefficients for Multiaxial Fatigue Analysis.
New and Enhanced Parameters
•
PARAM, CDITER: A new parameter, PARAM, CDITER can now be used to activate MPCBased Fast Contact Analysis.
•
PARAM, FASTCONT: A new parameter, PARAM, FASTCONT can now be used to activate
CONTACT/CGAP(G) Based Fast Contact Analysis.
•
PARAM, FLLWER: A new parameter, PARAM, FLLWER can be used to activate follower
forces introduced by pressure loads (PLOAD4 entries) and concentrated forces
(FORCE1/FORCE2 entries) in Large Displacement Nonlinear Analysis.
•
CONTPRM, CONTOUT: A new parameter, CONTPRM, CONTOUT can be used to output S2S
contact elements (and large displacement N2S) as PLOTEL+RBE3 elements to the
<filename>_contout.fem file for visualization purposes.
•
PARAM, CONTFEL: The AUTO option is now available (and is the default) that turns on
contact friendly elements automatically if 2nd order elements in N2S contact are present
in the model.
•
PARAM, HGHCMPOK: A new parameter, PARAM, HGHCMPOK can be used to turn off the
check for negative or large compliance in optimization runs
•
PARAM, PELAST: A new parameter, PARAM, PELAST can be used to turn on/off the
PELAST entries in the model.
•
PARAM, PBUSHT: A new parameter, PARAM, PBUSHT can be used to turn on/off the
PBUSHT entries in the model.
HyperWorks Desktop 14.0 Release Notes
172
Proprietary Information of Altair Engineering
New and Enhanced I/O Options or Subcase Information Entries
•
NLOUT: The new NLOUT entry can be used in the subcase information section to select
incremental result output parameters used for Nonlinear Quasi-Static analysis.
•
FLLWER: Used to activate follower loading in Large Displacement Nonlinear Analysis by
referencing a FLLWER bulk data entry.
•
NLADAPT: The NLADAPT Subcase Information entry can be used to reference an NLADAPT
bulk data entry for nonlinear convergence control.
•
DLOAD: The DLOAD Subcase Information entry can now be used to reference
TLOAD1/TLOAD2 entries in NLSTAT subcases.
•
RIGID: The RIGID I/O Options entry can now be used to select the rigid element
processing method via the LAGRAN and LGELIM options.
•
OUTPUT: The OUTPUT I/O Options entry has now been enhanced with the SPCD, YES/NO
option to control the output of .spcd files.
•
STRESS, ESE, and THERMAL: The RTHRESH, RTOP, and TOP fields have now been added
to support threshold-based output.
•
POST: The POST Subcase Information Entry has now been added to request subcasespecific output to separate files. The TOFILE option can be used to specify the label
appended to the model name in the output files.
•
OLOAD: The OLOAD I/O Options entry has now been enhanced with support for
temperature load output.
•
GPSTRAIN: The GPSTRAIN I/O Options entry has now been added with to output grid
point strain results.
•
ANALYSIS: The ANALYSIS Subcase Information entry has now been enhanced with
subcase-specific random response analysis support. The RANDOM option is now available.
•
NLPARM: The NLPARM Subcase Information entry has now been enhanced with the
LGDISP option to allow subcase-specific Large Displacement Nonlinear Quasi-Static
Analysis activation.
New Bulk Data Entries
•
NLOUT: The NLOUT bulk data entry defines incremental result output parameters for
Nonlinear Quasi-Static Analysis.
•
FLLWER: The FLLWER bulk data entry can be used to define parameters for follower
loading.
•
NLADAPT: The NLADAPT bulk data entry can be used to define parameters for nonlinear
adaptive control.
•
ACCEL, ACCEL1, and ACCEL2: The ACCEL, ACCEL1, and ACCEL2 bulk data entries can be
used to define acceleration loads.
•
RBODY and RBADD: The RBODY bulk data entry can be used to define a rigid body. The
RBADD entry can be used to define a rigid body as a combination of rigid bodies specified
using RBODYs.
HyperWorks Desktop 14.0 Release Notes
173
Proprietary Information of Altair Engineering
•
RJOINT: The RJOINT bulk data entry can be used to define a rigid connection between
coincident grid points.
•
LOCATE: The LOCATE bulk data entry can be used to define subcase-specific part
locations within the global part.
Enhanced Bulk Data Entries
•
CONTACT:
− The TRACK field has been added to activate finite sliding.
•
MATHE:
− The Model=ABOYCE option can now be used to define an Arruda-Boyce material model for
hyperelastic materials.
− The Model= RPOLY/MOOR/NEOH/YEOH options are now available to directly define subsets of
the Generalized Mooney-Rivlin material model.
− The Poisson’s Ratio (NU), Density (RHO), Coefficient of thermal expansion (TEXP), and the
Reference temperature (TREF) fields have been added to the MATHE entry.
•
TABLED1-3, TABLEM1-3, TABLES1, TABRND1, and TABDMP1:
− The FLAT field can now be used to define zero Y-values for X-values outside the range of the
table.
•
TLOAD1 and TLOAD2:
− The TLOAD1 and TLOAD2 entries can now be used to specify time-dependent loading in
NLSTAT subcases via the DLOAD subcase entry.
•
RBE2, RBE3, RBAR, and RROD:
− The ALPHA field is now available to specify the thermal expansion coefficient for rigid
elements.
•
PBUSHT:
− The KSCALE, BSCALE, GESCALE, and MSCALE flags are available on the TYPE field to scale
the corresponding entries on the PBUSH entry.
•
PCONT:
− The STFEXP and STFQDR continuation lines and corresponding field parameters are now
available to activate exponential and quadratic stiffness penalization options respectively.
•
GRAV:
− The CID field can now reference a cylindrical coordinate system.
•
FATPARM:
− The MAXLFAT field can now be set to YES to activate Multiaxial Fatigue Analysis.
− The MDMGMDL continuation line can be used to specify multiaxial fatigue damage models.
•
MATFAT:
− The MATFAT bulk data entry has been enhanced with parameters and coefficients for
Multiaxial Fatigue Analysis.
HyperWorks Desktop 14.0 Release Notes
174
Proprietary Information of Altair Engineering
Noise and Vibrations
Dry Modes are now Output to the H3D File
Dry Modes are now output to the H3D file when MFLUID is used with PARAM, VMOPT,2.
ERPREFDB and SPLREFDB Values are now Calculated Based on the UNITS Entry
The values of ERPREFDB and SPLREFDB are calculated based on the UNITS entry unless PARAM,
ERPREFDB or PARAM, SPLREFDB are specified explicitly. When the UNITS entry and the PARAM’s are
not present then the values are set equal to 1.0.
Panel-Wise Radiation Loss Factors
Radiation loss factors used in the equivalent radiated power (ERP) calculation can now be specified
on the PANELG bulk data entry through the ERPRLF field. A real value can be specified to directly
define the loss factor for all frequencies, or an integer value can be specified to reference a TABLEDi
entry that defines the loss factor vs frequency table.
Enhanced Automated Transfer Path Analysis
The Automated Transfer Path Analysis process is now enhanced with stability and accuracy
improvements, SPCD support, and Direct Frequency Response Analysis support. The grids on the
control volume are automatically output to the ASCII file.
New Parameter PARAM, MDK4OPT is now Available
If MDK4OPT=1, the most common value of GE for structural elements may be internally set equal to
PARAM, G to speed up the calculation of material damping. The traditional material damping
calculation method is used, if MDK4OPT is set to 0.
RVDOF and RVDOF1 Entries are now Available for Residual Vector Generation
RVDOF and RVDOF1 bulk data entries can now be used to specify degrees of freedom where the
residual vectors are to be calculated to enhance the modal space.
Preloading is now Supported for Modal Frequency Response Analysis and Direct/Modal
Transient Response Analysis
Preloading is now supported and can be applied to Modal Frequency Response Analysis and
Direct/Modal Transient Response Analysis subcases by specifying STATSUB(PRELOAD).
HyperWorks Desktop 14.0 Release Notes
175
Proprietary Information of Altair Engineering
Modal Frequency Response Solution has been Enhanced
Modal Frequency Response solution has been enhanced with the support of long integer pointer
usage to utilize all available memory to run large models.
The Performance of the Craig Bampton (CB) Method has been Enhanced for CMS Analysis
The performance of the Craig Bampton (CB) method has been enhanced for Component Mode
Synthesis (CMS) Analysis.
Normal Displacement, Normal Velocity, and Normal Acceleration Outputs are Now
Available
Normal Displacement, Normal Velocity, and Normal Acceleration outputs are now available for
Frequency Response Analysis. “Normal” indicates that the direction of output is normal to the
surface on which a grid is present. DISPLACEMENT(NORMAL), VELOCITY(NORMAL), and
ACCELERATION(NORMAL) entries can be used to request the corresponding normal results. Normal
results are automatically only output for grids on the surface of the model or given grid set.
Grids from the Second Round of AUTOSPC are Written to a CMF File
Grids from the 2nd Round of AUTOSPC is output to the .HM.autospc.cmf file. If it is an optimization
run, this is executed only in the first iteration.
Non-Structural Damping is now Available
Non-Structural Damping is now available via the NSGE, NSGE1, and NSGEADD bulk data entries
which are referenced by an NSGE subcase information entry. The NSGE and NSGE1 bulk data
entries define non-structural damping per unit area or per unit length for a list of elements,
properties, or element sets. The NSGEADD entry defines non-structural damping as a sum of
defined NSGE and/or NSGE1 entries.
Specified CBUSH Elements can be Included/Excluded from Residual Vector Calculations
Specified CBUSH elements can be included or excluded from Residual Vector calculations using the
VISC_INC and VISC_EXC options, respectively on the RESVEC subcase information entry. The
VISC_INC and VISC_EXC options can reference CBUSH element set identification numbers for
inclusion or exclusion.
RESVEC Calculation for Static Loading Using LANCZOS
Residual vectors are now calculated when static loads are used in Lanczos run.
New Parameter Data
HyperWorks Desktop 14.0 Release Notes
176
Proprietary Information of Altair Engineering
PARAM, MDK4OPT: This new parameter can be used to control the material damping
calculation when different material damping values (GE on the MATx entry) are specified
for different regions in a model.
•
New and Enhanced I/O Options or Subcase Information Entries
•
DISPLACEMENT, VELOCITY, and ACCELERATION: The NORMAL option is now available to
output normal results at surface grid points.
•
NSGE: The new NSGE Subcase Information entry is now available to reference NSGE,
NSGE1, or NSGEADD bulk data entries for the application of non-structural damping.
•
RESVEC: The new VISC_INC and VISC_EXC options are now available to include or
exclude CBUSH elements from residual vector calculations, respectively.
New and Enhanced Bulk Data Entries
PANELG:
•
−
The ERPRLF field references the value of the radiation loss factor or the identification number of a
TABLEDi entry to define radiation loss factor vs frequency.
RVDOF and RVDOF1:
•
−
The new RVDOF and RVDOF1 bulk data entries can be used to specify the degrees of
freedom at which residual vectors are to be calculated to improve the modal space.
NSGE, NSGE1, and NSGEADD:
•
−
The new NSGE, NSGE1, and NSGEADD bulk data entries can be used to specify non-structural
damping for elements, properties, and element sets.
HyperWorks Desktop 14.0 Release Notes
177
Proprietary Information of Altair Engineering
Kinematics and Dynamics
Enhancements to EXB Output for AVL EXCITE
PARAM, EXCEXB has now been enhanced with selective invariant output options. The output of the
all inertial invariants can now be turned off using PARAM,EXCEXB,SMOT. The output of only the
second order inertial invariants is turned off using PARAM,EXCEXB,GMOTR. All invariants are
included in the .exb file if PARAM,EXCEXB,GMOT is used. In addition, the performance is
dramatically improved for the EXB generation run. GPSTRESS is now supported for solid elements in
EXB generation and recovery runs.
Enhanced Parameter Data
•
PARAM, EXCEXB: The ability to control the output of inertial invariants is now available
via the GMOT, SMOT, and GMOTR options.
HyperWorks Desktop 14.0 Release Notes
178
Proprietary Information of Altair Engineering
Thermal Analysis
Transient Temperature at Multiple Time Steps can now be Applied in Thermal-Structure
Coupling Analysis
Transient temperature at multiple time steps can now be applied in Thermal-Structure Coupling
Analysis.
The TEMPERATURE subcase information entry has been enhanced by adding the HTIME = ALL
(selects all time steps of a transient thermal subcase) field. To use this in Thermal-Structure
Coupling Analysis, One Step Transient Thermal Stress Analysis can be performed. The
TEMPERATURE(HTIME=ALL) entry should be specified in a Static Analysis subcase and point to a
transient thermal subcase ID.
Thermal Contact has now been Enhanced
The thermal conductivity drops to zero when the clearance value falls beyond the final value
specified on the conductivity vs clearance table.
Enhanced I/O Options and Subcase Information Data
•
TEMPERATURE: A new HTIME argument is now available that can be set to ALL for One
Step Transient Thermal Stress Analysis.
HyperWorks Desktop 14.0 Release Notes
179
Proprietary Information of Altair Engineering
General Updates
Modal Stresses, Strains, and Displacements are now Output to the H3D File
Modal stresses, strains, and displacements are now output to the H3D file for Frequency Response
and Transient Analysis with MODAL option on respective output request.
The Path Character Limit on INCLUDE and ASSIGN Entries has been Increased
The filename and path character limit on INCLUDE and ASSIGN entries has now been increased to
600 characters.
The Script Command Line Options are now Output to the STAT File
The command line options for the script are now output to the STAT file for a specific run.
Full Length Subcase Label Support is now Available for PCH File Output
Full length subcase label support is now available for PCH file output.
Distance Tolerance is now Available to Manage Duplicate GRIDs
Distance tolerance is now available to manage duplicate GRID points. The SYSSETTING, DUPGRTOL
entry can be used to specify a distance value. If GRID points with the same ID are closer than the
specified distance, they are considered to be equivalent. If GRID points with the same ID are farther
than the specified distance, then OptiStruct errors out.
The Number of Temporary Scratch Directories Specified using TMPDIR has been Increased
The maximum number of temporary scratch directories that can be specified using the TMPDIR I/O
Options entry has been increased from 5 to 20.
Repeated Subcases can now be Defined for Output Handling
The REPCASE Subcase entry can be used in the subcase section to indicate the start of a repeated
subcase definition. REPCASE allows the user to define multiple output requests of the same type
(with possibly different options) for the same subcase. A repeated subcase (REPCASE) should only
contain output requests.
New and Enhanced Subcase Information and I/O Option Entries
•
SYSSETTING: A new setting, DUPGRTOL, is now available to control duplicate grids
handling.
HyperWorks Desktop 14.0 Release Notes
180
Proprietary Information of Altair Engineering
•
REPCASE: A new subcase information entry, REPCASE, is now available to created
repeated subcases for output handling.
HyperWorks Desktop 14.0 Release Notes
181
Proprietary Information of Altair Engineering
Optimization
Enhanced Stress Response for Topology and Free-Size Optimization is now Available via
DRESP1
Enhanced stress responses for Topology and Free-size Optimization is now available. Stress
responses for Topology and Free-size Optimization can now be subcase-specific, component-based,
and they are not only limited to von Mises stresses. The stress responses for Topology and Free-size
Optimization can now be defined using the DRESP1 bulk data entry. Previously, stress responses for
Topology and Free-size Optimization were only available via the STRESS continuation line on the
DTPL bulk data entry. The new formulation significantly expands the functionality and performance
of stress responses for Topology and Free-size Optimization.
Enhanced Free-Shape Optimization Results
The “Grow or Shrink” result type is available. The shape is growing if the value is 1.0 and shrinking
if the value if -1.0.
Output User Defined Response
The DRESPONSE I/O options entry is now available, which outputs user-defined responses to the
H3D file. This allows the post-processing of user defined responses (DRESP1, DRESP2, and DRESP3
bulk data entries) in HyperView and HyperGraph. All grid and element based responses (DRESP1)
are supported, and additionally all such combinations (DRESP2 and DRESP3) are also available. The
remaining responses are not supported since contouring them is not possible. Global responses are
output in a separate global subcase (_glob.h3d file). DRESPONSE(EQUA) can be used to disable the
output of DRESP1 responses.
Weighted Compliance for ESL-B2B Optimization
The weighted compliance is now available for ESL-B2B Optimization. This is activated via
DRESP1(WCOMP). Additionally, the optimization parameter WEIGHT is now supported for
NLGEOM/IMPDYN/EXPDYN analysis.
3D Topology Optimization for RADIOSS-Optimization (RADOPT)
•
3D topology optimization is now available for RADIOSS Optimization
•
Composite manufacturing constraints are now available in Free-size Optimization for
RADIOSS-Optimization (RADOPT)
•
Size Optimization for composites is now available for RADIOSS-Optimization (RADOPT)
Free-size Optimization for Composites for ANALYSIS=NLGEOM/IMPDYN/EXPDYN Subcase
HyperWorks Desktop 14.0 Release Notes
182
Proprietary Information of Altair Engineering
Free-size Optimization for composites is now supported for NLGEOM, IMPDYN, and EXPDYN
subcases.
Control Entity Output in the OUT File for Optimization
The output of retained responses to the .out file can be controlled using PARAM, PRTRET. The ALL
option allows all retained responses to be printed, the NOSTR option excludes stress, strain, and
force retained responses to the .out file, and NONE deactivates printing of retained responses. The
output of design variables and design entities to the .out file is controlled by PARAM, PRTDES. The
DVDP option prints both design variables and design entities to the .out file. The DV and DP options
prints the design variables, and design entities (properties, materials, and elements), respectively to
the .out file. The NONE option deactivates the printing of design variables and design entities to the
.out file.
Dang Van Criterion has been Enhanced
The Dang Van Criterion has been enhanced on the FOS continuation line. If the value in Field 3 of
FOS continuation line is an integer, it now references a TABLES1 entry. This is used to define the
intersection points of the FOS curve, wherein, X-values are hydrostatic pressure and Y-values are
microscopic shear. The units are defined on the MATFAT entry. The angle for the safe zone (5th field
in FOS) is now available. If angle at a point in the domain is less than the defined angle, it is
considered safe. The 6th field in FOS is the shear threshold for the safe zone. If microscopic shear
stress is less than this value, it is considered safe.
STACK Entries can now be Used in Topography Optimization
STACK entries can now be referenced by DTPG bulk data entries in Topography Optimization.
Smith, Watson, and Topper (SWT) Mean Stress Influence can be used for Optimization
Smith, Watson, and Topper (SWT) mean stress influence can now be used in Fatigue Optimization.
Soft Elements are Removed in OS Topology Optimization from the RADIOSS Nonlinear Run
Soft elements are removed in the OS Topology Optimization run from the RADIOSS nonlinear run
and reintroduced at the ESLM Linear Static Optimization run.
Failed Elements from RADIOSS Nonlinear Optimization Run are now Skipped
Failed elements from the RADIOSS Nonlinear Optimization run are now skipped when generating the
equivalent static loads.
A New Alternate Optimization Algorithm is now Available
HyperWorks Desktop 14.0 Release Notes
183
Proprietary Information of Altair Engineering
The DUAL2 Optimization algorithm is now available and can be activated using DOPTPRM, OPTMETH,
DUAL2. It is recommended to try this algorithm if the DUAL algorithm fails (restarting the
optimization job should suffice in such cases).
Frequency-Response Based Optimization Responses can now be Weighted
A, B, C-Weighting are now available for optimization responses via the SCALE field on the DRESP1
entry.
Frequency-Response Based Optimization Responses can now be Calculated within
Specified Ranges of Frequencies
LOWFQ and HIGHFQ can be used to define the frequency range of the response calculation on the
DRESP1 entry.
Resultant Section Force and Moment Response are now Available
Resultant section force and moment responses are now available via RTYPE=RESFORCE on the
DRESP1 entry.
Thermal Compliance can now be Used as an Optimization Response
Thermal compliance can be used as an optimization response via RTYPE=TCOMP on the DRESP1
entry.
Enclosed Volume for 2D Elements can now be used as an Optimization Response
RTYPE=VOLUME and ATTA=ENCLOSED can be used to create an enclosed volume response for
Shape, Free-shape, and Topography Optimization. The ENCLOSED option indicates that this
response is an enclosed volume defined by a closed 2D mesh (free-edges are not supported). For
this enclosed volume response type, ATTI field(s) should be set to PID.
Vector-Based Input is now Available for Optimization Responses via DRESP2 and DRESP3
Vector-based input is now available for optimization responses DRESP2 and DRESP3. The VTYPE#,
RID#, and VOPT# fields can be used to identify the DRESP1 and DRESP2 (or 3) responses to be
passed as vectors to the DRESP3 (or 2) entry. The VTYPEL#, RID#, LID#, and VOPT# fields can be
used to identify the subcase-specific DRESP1 and DRESP2 (or 3) responses to be passed as vectors
to the DRESP3 (or 2) entry.
Zero Crossing Frequency Response is now Available for Random Response Optimization
Zero Crossing Frequency response is now available for Random Response Optimization. It can be
activated by specifying ZCF in the ATTB field for RMS responses on the DRESP1 bulk data entry.
HyperWorks Desktop 14.0 Release Notes
184
Proprietary Information of Altair Engineering
Multiaxial Fatigue Optimization
Multiaxial Fatigue Analysis is now supported for optimization.
Thickness Gradient Constraints are now Supported for Free-Size Optimization
Thickness gradient constraints are now supported for Free-size Optimization via the THICK
continuation line. The TG field can be used to specify the maximum thickness gradient. The TGX,
TGY, and TGZ fields can be used to define a vector that specifies thickness gradient direction.
Linear and Planar Pattern Grouping for Free-Size Optimization
Linear Pattern Grouping (TYP=20) and Planar Pattern Grouping (TYP=21) are now supported for
Free-size Optimization on TYP field of the PATRN continuation line on the DSIZE entry. Linear
pattern is typically designed to handle models with minimal or no curvature in the specified vector
direction (which is typically orthogonal to the rolling direction in Taylor rolled blanks applications).
Planar pattern grouping is designed to handle models with high curvature in the orthogonal planes
of the defined vector, and with minimal or no curvature in the direction of the defined vector (the
vector defined in planar pattern grouping should typically lie in the rolling direction in Taylor rolled
blanks applications).
OUTPUT,FSTOSZ is now Supported for PSHELL in Free-Sizing Optimization
OUTPUT,FSTOSZ is now supported for PSHELL entries in Free-sizing Optimization.
Enhanced Discreteness in Topology Optimization for Normal Mode and Modal Frequency
Response Optimization
The discreteness in Topology Optimization has now been improved for Normal Mode and Modal
Frequency Response Optimization.
Enhanced Discreteness in Topology Optimization
The discreteness has now been improved for any analysis type in Topology Optimization. This can be
activated by DOPTPRM,TOPDISC,YES. This parameter can be added to Topology Optimization in
normal mode and Modal Frequency Response Analysis to enhance the discreteness even further.
The Penalization on Mass is Removed in Topology Optimization when the Body Force Type
of Loading is Involved
Mass is not penalized anymore so that the force due to gravity, centrifugal is correct throughout the
iterations in Topology Optimization. This also helps achieving more discrete results.
Tapered Beam is now Available for Lattice Structure Optimization
HyperWorks Desktop 14.0 Release Notes
185
Proprietary Information of Altair Engineering
Tapered Beam is now available for Lattice Structure Optimization via PBEAML (TYPE=ROD) bulk data
entry.
Lattice Smoothing and Remeshing Support is now Available for Lattice Structure
Optimization
Lattice Smoothing and Remeshing (via OSSmooth) support is now available for Lattice Structure
Optimization using the LATPRM,OSSRMSH parameter. During Lattice Optimization, this parameter
activates, via OSSmooth, the smoothing process and optionally the remeshing process if the mesh
size value is specified.
Free-Shape Design Grids are now Divided by Geometry into Smaller Groups
The FSSPLIT flag on DSHAPE allows splitting the design grids into smaller groups based on
geometry. This allows capturing finer shape changes more effectively.
Large Shape Changes are now Supported for Optimization with Normal Mode and Buckling
Analysis
Large shape changes are now supported for Normal Modes and Buckling Analysis for a structure that
contains N2S contact, CGAP, and CGAPG elements. Earlier only Linear/Nonlinear Static Analysis was
supported for large shape changes in Shape Optimization.
The CSTRESS, CSTRAIN, CFAILURE Output from TOP, MID, and BOTTOM of Composites can
now be Used as Responses for Optimization
The CSTRESS, CSTRAIN, and CFAILURE output from TOP, MID, and BOTTOM of composites can now
be used as responses for optimization. The T (TOP), B (BOTTOM), and O(MID) suffixes are now
available for the regular corresponding composite stress, composite strain, and composite failure
ATTA field options.
The ERROR and WARNING Messages from RADIOSS Optimization (RADOPT) are now
Printed in the OUT File
The ERROR and WARNING messages from RADIOSS Optimization (RADOPT) are now printed in the
OUT file, instead of only on the screen.
The Euler Buckling Checks in the Phase 2 of Lattice Optimization are now Output
The Euler Buckling checks in the Phase 2 of Lattice Optimization are now output to the H3D file.
The Default Constraint Violation Tolerance can now be Changed
HyperWorks Desktop 14.0 Release Notes
186
Proprietary Information of Altair Engineering
The DOPTPRM, CONTOL parameter can be used to change the default constraint violation tolerance
from the current default value of 1%.
New and Enhanced Parameter Data
•
PARAM, PRTRET: Controls the printing of retained responses to the .out file.
•
PARAM, PRTDES: Controls the printing of design variables and design entities to the .out
file.
•
DOPTPRM, OPTMETH: A new DUAL2 optimization algorithm is now available.
•
DOPTPRM, TOPDISC: A new parameter is now available to improve discreteness in
Topology Optimization.
•
DOPTPRM, CONTOL: A new parameter CONTOL is now available to control the percentage
value of the constraint violation tolerance.
•
LATPRM, OSSRMSH: A new parameter OSSRMSH is now available to activate smoothing
and remeshing in Lattice Structure Optimization.
Enhanced I/O Options and Subcases Information Data
•
DENSITY: A new type option, TOPO is now available on the DENSITY I/O Options entry
to output density results for topology design elements. The SID option has also been
added to specify a SET of elements.
•
DRESPONSE: The DRESPONSE I/O Options entry is now available to output DRESP1,
DRESP2, and DRESP3 responses to the H3D file. The EQUA option can be used to exclude
DRESP1 output.
New and Enhanced Bulk Data Entries
•
DRESP1:
− DRESP1 stress constraints are now supported in Topology and Free-size Optimization.
− The ZCF option is now available on the ATTB field for RMS responses.
− The SCALE field on the EXTN continuation line on the DRESP1 entry is now available for
scaling and weighting responses. The LIN, LOG, DBA, DBB, and DBC options are available.
− The OCTAVE field on the EXTN continuation line on the DRESP1 entry is now available to
calculate responses in octave bands. An integer value can be specified to define the octave
band.
− The LOWFQ and HIGHFQ fields can be specified to define the frequency range for the
calculation of frequency response based responses.
− The RTYPE= RESFORCE setting can be used to specify resultant section force and moment
responses on the DRESP1 entry.
− The RTYPE=TCOMP setting can be used to specify the thermal compliance response on the
DRESP1 entry.
− The RTYPE=VOLUME and ATTA=ENCLOSED settings can be used to specify the enclosed
volume response on the DRESP1 entry.
HyperWorks Desktop 14.0 Release Notes
187
Proprietary Information of Altair Engineering
− The T, B, and O suffixes are appended to the existing composite stress, shear, and failure
item codes for the ATTA field options.
•
MATFAT: The MATFAT bulk data entry is now enhanced with the STHETA and SSHEAR
fields for safe zone definition. The Tfl field can now reference a TABLES1 entry that
defines the intersection points of the FOS space.
•
DTPG: The TYPE field can on the DTPG entry can now reference STACK entries for
Composite Topography Optimization.
•
DRESP2 and DRESP3: The VTYPE#, RID#, and VOPT# fields and The VTYPEL#, RID#,
LID#, and VOPT# fields are now available for vector-based optimization response input.
•
DSIZE:
− The TG, TGX, TGY, and TGZ fields are now available to apply thickness gradient constraints in
Sizing Optimization.
− The TYP field on the PATRN continuation line can now be set to 20 and 21 to activate linear
pattern grouping and planar pattern grouping, respectively.
•
DSHAPE:
− The FSSPLIT continuation line is now available to activate the splitting of design geometry
into multiple DHAPE’s based on their normal orientation. The SPLIT field controls the splitting
of the design grids for this DSHAPE entry.
HyperWorks Desktop 14.0 Release Notes
188
Proprietary Information of Altair Engineering
Solvers
Automatically Switch to 64-bit Sparse Direct Solver
The 64-bit sparse direct solver is automatically activated if –len is set greater than 16 GB.
Memory Estimate for MUMPS Solver
The estimated memory for the MUMPS solver is now available in the OUT file.
AMSES has been Upgraded to 64-bit
AMSES has been upgraded to 64-bit to be able to solve large models.
HyperWorks Desktop 14.0 Release Notes
189
Proprietary Information of Altair Engineering
Nonlinear Dynamic Analysis
New MATX38 Bulk Data Entry
A new MATX38 bulk data entry material has been added as a MAT1 extension material type for
Nonlinear Dynamics Analysis. It maps to the RADIOSS /MAT/LAW38 material type.
New Bulk Data Entries
•
MATX38: A new MAT1 material property extension for viscoelastic foam tabulated
material (tabulated form) for Nonlinear Dynamics Analysis is now available.
HyperWorks Desktop 14.0 Release Notes
190
Proprietary Information of Altair Engineering
Resolved Issues
•
Inertia Relief Analysis with INREL = -2 has now been enhanced to output the same
displacement results for Inertia Relief subcases in models with static subcases and in models
with only Inertia Relief.
•
Internally created constraints for Draw Direction are now ignored for the output of
Constraint Violation % in the .out file.
•
The accuracy of results for Lanczos runs with SPCD and other types of residual vectors
(loading, damping, USET), has been improved.
•
An issue wherein the CBUSH force results did not take into account the varying GEi bush
structural damping values correctly (via PBUSHT) has now been fixed.
•
Runtime for models containing NSM bulk entries referenced by a large number of element
and property data has now been improved.
•
Models with local coordinate systems assigned on CBUSH grids with PBUSHT in nonlinear
analysis are now correctly handled.
•
Previously, grounded CBUSH in Large Displacement Analysis and grounded CBUSH (with
nonlinear PBUSHT) in Small Displacement Analysis were incorrectly handled. This issue has
now been fixed.
•
A programing error that was printed with RBE3 in Large Displacement Analysis with
dependent dof as 123 only has now been fixed.
•
Previously, results may be incorrect when a local coordinate system is assigned to the
dependent node of an RBE3 in a Large Displacement Analysis. This has now been fixed.
•
The accuracy of sensitivity calculations for Shape Optimization with nonlinear contact has
now been improved.
•
Previously a Negative Jacobian error occurred when shape design variables are defined on
pretension surfaces. This has now been fixed.
•
An issue wherein viscous damping was not handled properly when bush offset was defined
has now been fixed.
•
An issue wherein results were incorrect if PBUSHT and SPCD were used in conjunction in a
fluid-structure coupling model has now been fixed.
•
No corner stress was output when linear material (other than MATHE) was referenced by
PLSOLID. This has now been fixed and an appropriate error message is printed if any
material type other than MATHE is referenced by PLSOLID.
•
A performance issue with Topology Optimization using Multi Model Optimization has now
been fixed.
•
An issue with STRAIN results for models containing Hyperelastic materials has now been
fixed.
•
Surface to Surface contact now correctly recognizes the TOP/BOTTOM type on the ZOFFS
field.
•
H3D file is now output for Complex Eigenvalue Analysis in Rotor dynamics.
•
Performance issue with ESE output request for Modal Frequency Response is now fixed.
HyperWorks Desktop 14.0 Release Notes
191
Proprietary Information of Altair Engineering
•
Results were incorrect for models with 3D bolt pretensioning with non-flat surfaces. This has
now been fixed.
•
An issue wherein results could be incorrect if a local coordinate system is assigned on the
dependent node of RBE3’s in large displacement analysis has now been fixed.
•
ERP grid contribution of second order elements has now been improved.
•
ELEMQUAL in optistruct.cfg is now correctly recognized.
•
The CHACAB element formulation has now been enhanced.
HyperWorks Desktop 14.0 Release Notes
192
Proprietary Information of Altair Engineering
RADIOSS 14.0 Release Notes
Altair® RADIOSS® is a leading structural analysis solver for highly non-linear problems under dynamic
loadings. It is highly differentiated for scalability, quality and robustness, and consists of features for
multiphysics simulation and advanced materials such as composites.
RADIOSS is used across all industries worldwide to improve the crashworthiness, safety, and
manufacturability of structural designs. For over 25 years, RADIOSS has established itself as a leader
and an industry standard for automotive crash and impact analysis.
HyperWorks Desktop 14.0 Release Notes
193
Proprietary Information of Altair Engineering
Crash and Safety
Major improvements for airbags, in particular Starter capability to generate automatic Finite Volume
Mesh for folded complex airbags to account for internal airbag topology: inter-chamber surfaces,
retainers etc. Pre-simulation for airbag folding is becoming a standard, but having the folded bag
respecting its package constraints requires additional morphing operations that are now implemented
inside the solver.
Tied contact has an extended penalty formulation, to overcome issues with multiple incompatible
kinematic conditions; main advantage versus previous formulation is the conservation of both forces
and moments. There are no over-costs compared either to kinematic formulation or former penalty
one.
Composites is another domain of major improvements. Ply based input, equivalent to OptiStruct input,
is not only more intuitive, but allows seamless combined crash/impact and strength simulations, or
multi-objective optimization. The coupling with MDS (Multiscale Design Systems) opens the door for
material law identification as well design to answer specific dedicated behaviors.
Globally material laws and rupture criteria are fundamental issues for all the industries in the virtual
testing approaches. A new material law for high strength steel with strain rate and temperature
dependencies developed by MIT provides an accurate prediction of the local strain fields with a
consistent damage indicator.
Damage is an important indicator for failure of components; stress and strain only are often not
sufficient to estimate components failure, because failure in tension/compression/shear occurs at
different stress and strain levels. Damage visualization, available for all failure criteria and both solids
and shells, allows to have a more precise estimation about how close to failure are elements. It is also
possible to initialize damage, for example to take into account damage due to forming process of a
given component.
Airbags
•
Destination Reference (Fitting): Technology to morph folded airbags into given its
destination. Folded airbag mesh usually does not fit into its destination in packaging
space; the airbag is gradually morphed into its destination by defining both the envelop
surface and the destination surface.
•
Automatic FVM mesh for multi-chambered airbags: FVM mesh taking into account
internal inter-chamber surfaces, retainer etc. is generated automatically by the Starter.
•
FVM solution speed: Improvement of the FVM method parallelization, offering nice
scalability in SMP.
•
Airbag tethers: Advanced option in /PROP/TYPE4 (H1 = 8: elastic total length function)
allowing to define the force as a function of total actual length, as opposite to the regular
force as a function of elongation (H1 = 0).
•
Fabric material laws: Advanced fabric material LAW58 has an extended formulation
describing with higher accuracy the mechanical behavior of fabric at high strain values;
new transverse shear modulus Gsh between layer.
•
Pyramid element available for gas mesh: In case of manual mesh, element
compatibility has been extended to pyramid elements.
HyperWorks Desktop 14.0 Release Notes
194
Proprietary Information of Altair Engineering
•
Pyramid element available for internal FVM mesh.
•
FVM compatibility with /LEAK/MAT: Possibility to model leakage through porous
fabric surfaces.
•
Reference state: /EREF compatibility with TETRA4 elements. /EREF is compatibility with
/REFSTA and /XREF in case there are no common nodes between these 3 options to
define a reference state.
•
//SUBMODEL: Compatibility extended to /MONVOL/COMMU1, /MONVOL/FVMBAG1,
/LEAK, and /EREF.
•
Local parameters implemented for //SUBMODEL. This allows to parametrize
airbag, seatbelt and other RADIOSS models.
Contact TYPE6
•
New friction formulation with static force and dynamic coefficient input; it allows to better
control relative motion. For example, tangential motion starts only if the tangential force
exceeds the static friction force.
•
Damping coefficients are available for both normal and friction force as a function of
relative velocity and of normal contact force.
•
New option Icor to adjust the contact force due to initial intersection.
Tied Contact (TYPE2)
•
New penalty formulation (Spotflag=26) designed to overcome limitations of the existing
one (Spotflag=25): not only forces but also moments are fully transmitted from master
segment to slave node, respecting global balance. It is less sensitive to errors due
projections outside the master segment; performance are similar to Spotflag=25.
•
Stiffness control for penalty formulation (Spotflag=25, 26): user can tune the penalty
stiffness to prevent time-step drops, that might occur especially when the ratio
slave/master stiffness is big.
•
Slave node projection control: to prevent negative mass errors, in case the slave node
projection is close, but outside the master segment, the user can force slave projection
on the edge of the master segment (Iproj=0, default in v14.0).
•
Error/Warning messages are compacted into the Starter output file, making it more
readable and lighter in terms of file size. For example, instead of repeating the same
error message for each node, a single error message is output with a list of the nodes.
Contact Default Values
•
Possibility to define default values of contact flags, by contact type. For example, stiffness
flag, etc.
Composites
HyperWorks Desktop 14.0 Release Notes
195
Proprietary Information of Altair Engineering
•
Ply-based input: new input type for multi-layer composites based on plies. Plies are
identified with groups of elements, which is closer to designers experience and
manufacturing process. RADIOSS and OptiStruct ply-based input are now fully consistent,
allowing easy conversion from one format into the other both ways, making combined
crash/impact and strength simulations seamless, including optimization.
•
QEPH shells compatibility with orthotropic properties/materials: QEPH is an underintegrated shell element with physical hourglass control; with a very small computational
over-cost gives results with high accuracy, close to fully integrated elements which are
traditionally used for composites. QEPH v. Batoz elements computation time can be
estimated as a factor of 3.
•
Sandwich shell (PID11): Global material properties are now automatically calculated
based on the properties of the layup in membrane and bending
A material for part definition is still needed (for pre- and post-treatment purposes). The
stability condition is recalculated and offset layup stability is improved; this may change
results within the magnitude of the model numerical sensitivity. Global material
properties are also used to compute time-step and contact stiffness.
Materials and Failure Models
MDS (Multiscale Design Systems): complete environment for analysis and design of heterogeneous
material.
•
Direct coupling with RADIOSS through dll.
•
MDS can be used to identify the parameters of the RADIOSS laws for example law 25 for
composite.
Metals:
•
/MAT/LAW84: Swift-Voce elastic-plastic law with Johnson-Cook strain rate hardening and
temperature softening.
•
/MAT/LAW52 (GURSON): User-defined yield stress; input is yield stress table (yield stress
v. plastic strain) activated with the new flag Iyield. Strain rate hardening is also possible.
The regular Johnson-Cook parameters are used if table_ID=0.
•
/MAT/LAW2: Possible to input yield-stress, Ultimate engineering tensile stress or
engineering strain at UTS with new flag “Iflag” in /MAT/LAW2.
Foams:
•
/MAT/LAW77: porous foam material law. This porous material law is compatible with
moving structures.
Spotwelds:
•
/MAT/LAW59 and /MAT/LAW83: new flag Imass for mass calculation: spotweld mass can
be computed either using the volume or the area (upper and lower average).
•
Physical thickness could be taken into account for moments computation (True thickness
in /PROP/CONNECT).
•
/MAT/LAW59: The Starter checks and errors out if the slope of the input curve is higher
than the Young's modulus.
HyperWorks Desktop 14.0 Release Notes
196
Proprietary Information of Altair Engineering
•
Spotwelds lines and clusters: /CLUSTER allows to group of elements with LAW59 or
LAW83 material into a cluster of spotweld elements. Cluster allows to output summed
force and moments acting to all elements of the cluster. Cluster failure criterion can be
defined based in these forces and moments. Cluster can be used also with spring
elements.
Polymers:
•
Elastic-plastic material with a non-linear elastic section for solid (LAW65 compatibility
extended to all solid elements: hexa, tetra and thick-shells).
XFEM
•
Possibility to separate the crack initiation and advancement criteria extended to other
compatible failure models (Dadv in /FAIL/TBUTCH and new function fct_IDadv in
/FAIL/FLD).
•
No more number of layer limitation with X-FEM in /PROP/SH_SANDW (/PROP/TYPE11).
•
By making /MAT/HILL (LAW32) and /MAT/HILL_TAB (LAW43) compatible with
/PROP/SH_SANDW (/PROP/TYPE11) X-FEM can be applied to orthotropic materials.
Thermal stress and expansion:
•
Generalized to all material laws (for both shell and solid elements).
Damage and Failure index:
•
Possibility to output damage and failure index for all failure criteria using
/ANIM/SHELL/DAMA or /ANIM/BRICK/DAMA.
Properties
•
Hill’s law for muscles: /PROP/SPR_MUSCL is a spring property for modeling active/passive
muscle behavior in crash events; it is an elastic-viscous plastic law with user-defined
functions reflecting time dependent muscle behavior in tension (force v. deflection or
force v. time).
•
Possibility to define edge to edge contact for XELEM: a part of XELEM can be set in
/LINE/PART to define contacts with /INTER/TYPE11.
•
Improved hourglass control in HEPH element: Hourglass tangent modulus control (IHKT)
extended to orthotropic properties (/PROP/TYPE6).
•
Improved energy computation for pre-tensioner spring: initial/added internal energy for
/PROP/TYPE32 (SPR_PRE) to avoid negative energy.
Resolved Issues
Airbags:
•
Non-consistent temperature/fluid velocity output when automatic mesh is used
(FVMBAG1).
•
Porosity curve shifted not respected if controlled by Ittf (=0, 1, or 2).
•
LAW58 nonlinear curve input not read correctly.
HyperWorks Desktop 14.0 Release Notes
197
Proprietary Information of Altair Engineering
•
Starter issues Warning 941 (surface not closed) even when the airbag surface is closed.
•
FVM: general robustness improvements (better control on the evolution of the number of
finite volumes).
•
/FVMBAG1 with tetra mesh and internal surfaces. Result of pressure in time history and
animation does not match.
•
Error message is issued, if vent a hole in /FVMBAG1 is not determined through a physical
components.
•
Added a warning for FVMBAG when a node belongs to several inflators.
•
Starter will issue a Warning (instead of an error), if a vent hole area is not defined for UP
airbags.
•
Possible Starter segmentation violation error while try to write finite volumes in animation
file (Ifvani=1 in /MONVOL/FVMBAG1).
•
/IMPDISP does not does not imposed nodes, if /IMPDISP/FGEO used.
•
Airbag internal surfaces is ignored by FVM.
Contact TYPE6:
•
Formulation flag not detected (Iform, nonlinear behavior with constant unloading
stiffness).
Tied Contact TYPE2:
•
Possible segmentation violation when using interface TYPE2 in 2D analysis.
•
With ignore=2, Starter does not report a problem of non-projected node as expected.
•
With IGNORE >= 1, if slave nodes are not tied, warnings are compacted to improve
readability.
Contacts:
•
TYPE7: Possible Engine failure if Irem_gap=2 with SPMD version is used.
•
TYPE7: The gap calculated by RADIOSS for Igap=3 does not match the theoretical value.
•
TYPE11: When contact is defined inside a submodel with different units, dtmin value is
not scaled.
•
TYPE17: Hertz contact may not work if several interfaces TYPE17 are defined.
•
TYPE17: Contact might not be detected if the top face of SHELL16 is impacting the
master SHELL16.
•
TYPE21: Possible segmentation error due to restart writing is wrong if using Interface
type 21 + INACTI=6.
Composites:
•
/MAT/LAW25.
− Wrong RADIOSS units for WPLAREF and WPLAMX: if Wp_ref=0, Wp_ref=1 will be considered
whatever units system used which is not correct.
− Possible engine segmentation violation error with solids and thick-shells.
− Wrong strain tensor output in animation file for solids and thick-shells.
HyperWorks Desktop 14.0 Release Notes
198
Proprietary Information of Altair Engineering
− No element (with LAW25 CRASURV Formulation) deletion despite number of failed layer in
animation.
•
Elements possible deletion during initialization of orthotropy directions with the
/INISHEL_ORTHO_LOC card.
•
Failure appears too early with Puck criterion; failure might occur even if the failure is
switched off (all strengths to 1e30).
•
Extended incompatibility checks with orthotropic law + isotropic property and print the
warning message.
•
/PROP/SH_SANDW: Add error message if /PROP/SH_SANDW is used with incompatible
material.
•
Unstable solution by use AMS + Ipos=1 in sandwich shell property and all the ply define
on one side of the middle plane shell.
•
Starter error out and info incompatibility for orthotropic material laws(LAW43,73) with
sandwich property.
•
Model with Idrill=1 + Batoz + Composites fails due to energy error limit reached.
Material and Failure Models:
•
LAW35: Issue due to wrong unit convert for LAW35 in /BEGIN.
•
LAW59: Possible wrong behavior of /FAIL/CONNECT on win64 (energy criterion is
ignored).
•
LAW83: Plastic strain output is wrong (in both ANIM and TH).
•
LAW50: Strain rate not available and wrong Starter printout.
•
LAW66: Wrong elastic-plastic behavior for solid elements.
•
LAW70: Incorrect default Qa and Qb values in the Starter printout file.
•
LAW70: Wrong results in animation, if using LAW 70 and Ismstr=11/Iframe=2.
•
LAW42 and LAW65: Incorrect time-step estimation in the Starter.
•
/MAT/LAW44 (COWPER): Calculates the strain-rate effect even with C=0 (no strain rate
effect).
•
/FAIL/LAD_DAMA input: Wrong order of Ifail_sh (shell) and Ifail_so (solid).
•
Possible segmentation violation Error when none plastic law (e.g. LAW42) with tensstrain
failure criteria.
•
INICRACK (X-FEM) might delete instead of splitting elements.
•
LAW24: Dilatancy (s0/fc) default value, leads to NaN Error.
•
LAW24 is compatible with tetra10.
•
Different results between two unit systems used in a model with
HEPH+IHKT=2+Hyperelastic laws (42, 62, 69, 82).
•
Use LAW42 with Prony coefficients showing unexpected zero reaction force at
displacement=0 in the unloading cycle.
•
XFEM does not work correctly with multiple /FAIL/TAB1 cards (each of them with Ixfem =
1).
HyperWorks Desktop 14.0 Release Notes
199
Proprietary Information of Altair Engineering
•
Corrected failure criterion (/FAIL/SNCONNECT) to match the theoretical results and also
correct ANIM damage output in (/ANIM/BRICK/VDAM).
•
Possible segmentation violation error in engine for XFEM in win64 SMP.
•
No difference in results even with different input curves in /FAIL/ENERGY.
Properties:
•
When using 10 IPs over thickness, the structure shows strange stress output (waves) in
animation files and in Time History file, as well. It does not happen, if using less than 10
IPs.
•
When solved using RADIOSS SPMD, NSTRAND/XELEM parts are missing from animation
files and elements are incorrectly grouped.
•
Corrected curve description for PROP/SPRING in Starter output.
•
/PROP/KJOINT (TYPE33) does not work if both ends of the spring are without /RBODY.
•
In /PROP/KJOINT2 (TYPE45) friction force is incorrect in case SD+ and SD- are set to
zero.
•
Deformation of solid connect element will not be stable when connected shell elements
are deleted.
•
In /PROP/TYPE4 (SPRING) with H=7, the output force does not follow the prescribed
force/displacement curve. And also fix the behavior for non-homogenous spring groups.
•
Correct negative internal energy when using Isolid=17+LAW34.
•
/PROP/TYPE22+LAW25: incorrect strain output for thick shell elements with Isolid=14.
•
Possible engine error(NaN in IE) due to Starter change Ismstr=1 is changed to Ismstr=11
with REFSTA + LAW36.
•
Correct shell stress results through the thickness when more than 1 IP defined through
thickness.
HyperWorks Desktop 14.0 Release Notes
200
Proprietary Information of Altair Engineering
Forming
Extended thermal capabilities represent certainly a big step forward for hot-forming simulation
capabilities, as well as general applications. Thermal expansion and heat transfer capabilities have
been generalized to all materials and element types (solids and shells).
Controlling manufacturing process is sometimes crucial for the performance of a component. Damage
evaluation, together with thinning and residual stress and strain is critical for an accurate description of
the initial state of a component that after being formed, should undergo a set of tests. Damage
initiation is now extended to shells. Damage can also be output into animation files, and might be
helpful for failure risk prediction.
Thermics
•
Generalization of thermal expansion to:
− all material laws
− all small strain formulations
− all element types (solids and shells)
•
Improved results accuracy for thermal expansion.
•
Radiation (/INTER/TYPE7): possibility to compute the radiative exchange between two
parts which are not in contact.
•
Thermal conductivity (/INTER/TYPE7): depending on contact pressure.
•
Thermal time-step: usually thermal time step is several orders of magnitude larger than
mechanical time-step. For example, for quenching simulations, thermal time-step might
speed-up the solution by a factor 1000x about.
•
Heat output in time history: new option QFRIC in /TH/INTER outputs thermal energy
generated from contact friction.
Damage Initialization and Visualization
•
Manufacturing process may severely affect material properties; evaluation of damage due
to manufacturing is critical for the performance of the components in real tests.
•
Damage now can be output (*.sta file) and initialized both for shells and solids.
•
Damage can also be visualized in *.anim file (/ANIM/BRICK/DAMA and
/ANIM/SHELL/DAMA).
Materials and Failure
•
Metals: Input yield stress curve (Iyield0=1) in orthotropic direction is possible (option
Iyield stress flag in /MAT/LAW32, /MAT/LAW43 and /MAT/LAW73).
•
Failure: NXT failure criterion is an extension of /FAIL/FLD, where the failure is checked
against the stress (in FLD the failure is checked in the strain domain). NXT main
HyperWorks Desktop 14.0 Release Notes
201
Proprietary Information of Altair Engineering
advantage v. FLD is that failure is stress and strain history path independent. Output at
each integration point is available.
Drawbeads Contact TYPE8
Force on tools can be predicted with higher accuracy by taking into account the blank bending force
due to drawbeads.
Titles in Animation Files
In forming simulations the time in animation file is not relevant, while some key information (like
the tool displacement or distance from the blank) are not plotted. Now animation file titles can be
defined in Engine file (1 title per animation file).
Resolved Issues
Thermics
•
LAW80: possible segmentation violation error:
− when using adaptivity
− when using table input + single precision
•
LAW80: possible wrong plastic strain output.
•
Nodal temperature may depend on small strain formulation used.
•
Different nodal temperature results between fine mesh and adaptive mesh.
•
Possible incorrect energy balance (99% Energy Error).
•
Possible incorrect volumetric expansion.
•
Thermal conduction might happen in all /INTER/TYPE7 contact interfaces defined in a
model, even if requested only in a single one.
•
Incorrect thermal expansion results for solid model if full geometric non-linearities
formulation (Ismstr=2, 4) is used.
General
•
Possible NaN energy output per integration point (NPT > 5 in shell property).
•
Possible Starter Error if STATE/ADMESH and SH3N are used simultaneously.
•
Using STATE/THICK + Adaptive mesh, elements are written several times in .sta file.
•
Starter errors out in Adaptive Meshing if Node ID and shell ID are > 900000000.
•
Possible ERROR 760 during spring-back phase.
•
For /FAIL/NXT criterion, results sigma1/h and sigma2/h could be output in all layers, in
upper/lower/membrane layer or in N layers.
•
Starter issues a warning – instead of error - message if *.sta file includes elements
which might have been removed from the Starter (due to trimming).
HyperWorks Desktop 14.0 Release Notes
202
Proprietary Information of Altair Engineering
Blast Simulation
Thru the Euler and ALE capabilities RADIOSS is brightly used for fluid structure interactions. In Version
14.0 improvements have been brought in the multi-material regarding the compatibility with the far
field boundary conditions. A significant added value lies on the compatibility of the Tetra4 elements
with ALE.
TETRA4 Element Compatible with ALE
New TETRA4 element (Itet=3) compatible with ALE, reducing the volumetric locking.
Multi-Material (LAW51)
•
Drücker-Prager yield criteria introduced. (/MAT/LAW51 – Iform=11).
•
Possibility to define relative pressure for inlet material boundary: PEXT (Iform = 4 or 5).
•
/INIVOL card is now compatible with boundary elements (Iform = 2 or 3).
New Cards for Detonics Modeling
/MAT/LAW5 and /MAT/LAW51: Burn fraction method for JWL EOS can be defined using IBFRAC flag.
Usually two functions are evaluated: one is based on time, the second one is based on volumetric
compression. The maximum of the two functions is used by default to set burn fraction value. Now
the user can deactivate one of them. This especially enables to keep only function based on time
control to get rid of erroneous ignition in some specific cases.
Resolved Issues
•
Degenerated pentahedra now compatible with /SUPG.
•
/MAT/LAW51
− Possible time-step drop (Iform = 2, 3) due to Strain Rate incorrect value.
− Possible Engine failure with negative density (rho=NaN) for unused submaterial in inlet/outlet
formulation.
− Possible Engine failure at cycle 0 on Windows. Issue occurring when using plasticity models
with MM-ALE (Multi-Material-ALE) LAW51.
− No strain rate dependency with JCOOK criteria.
− Deviatoric stress is now taken into account for outlet frontier (Iform=3).
− Fixed strain rate & temperature dependency in Johnson-Cook criteria when used with MMALE.
•
/INIVOL not working correctly when surface is defined with mixed 3N and 4N shells.
•
Multiple /INIVOL cards not working (last one overwrites previous ones).
•
/INIVOL: possible failure on Windows platform.
•
Drücker-Prager material LAW10 and LAW21.
HyperWorks Desktop 14.0 Release Notes
203
Proprietary Information of Altair Engineering
− Artificial Viscosity was not taken into account while computing energy integration from EOS
numerical solving. Might affect numerical result unless user sets artificial viscosity to 0:
qa=qb=1e-20.
− Wrong Drücker-Prager behavior in tension:

1- Yield surface was symmetrized around fracture point, while there
shouldn’t be any yield criteria below this point. This might affect
numerical results since Yield surface was fixed

2- If Yield surface is mathematically not well defined user is warned
− Introduction of PEXT parameter. User can now input EOS written in relative pressure
formulation: new PEXT parameter enables to get correct energy balance.
•
/MAT/LAW20:
− Detonation wave velocity faster than expected results. ALE rezoning issue was fixed. It was
computed only if second submaterial in input card required it.
− Possible engine segmentation violation error if /ANIM/ELEM/VFRAC is used.
•
Rotations can now be imposed on Lagrangian nodes merged to an ALE element.
•
Error not returned when LAW3 format is the old v10 one: Using material card format 10.0
leads to error message in input files 110 120 130.
•
Warning message is issued if old format of LAW3, LAW4 and LAW49 is used.
•
/MAT/LAW37: Starter checks for massic liquid proportion out of range [0,1] and initial
densities < 0.
•
Reinforced concrete material LAW24: Check the warning "increment too big on element
###" for LAW24 material elements in engine. Fix of Possible high occurrence of Warning
message about too big increment on load path.
•
Possible read error with /CAA option, if /IOFLAG or /ANALY card was not present.
User comfort (Input/Output/Manual)
•
Manual for material law 11 (/MAT/BOUND) was rewritten to provide better understanding
of different options (non-reflecting frontier(NRF), general outlet, inlet from stagnation
condition, etc.)
•
Improved user readability in output files for ALE keywords: listing outputs and
documentation are now consistent.
•
FSI interface 18 (/INTER/TYPE18) has no longer Istf flag. It is now removed from input
card and the manual since it is now automatically set to 1.0. Other values led to error
message about NEGATIVE STIFFNESS NODE.
•
Starter is checking if a Lagrangian element is connected to an Eulerian one. Warning
message is printed in this case.
•
Surface defining elementary boundary condition (/EBCS) is now checked by Starter
Warning messages are printed, if necessary.
•
Initial pressures for law 51 submaterial are printed in Starter listing file.
HyperWorks Desktop 14.0 Release Notes
204
Proprietary Information of Altair Engineering
General Updates
Main enhancements relate to TYPE24 contact, SPH and Multi-Domain.
General contact TYPE24 has been enhanced concerning the treatment of initial penetrations; formerly
with solids coated with shells, the contact defined both on shells and solids, with penetration larger
than half the shell thickness, was causing nodes anchorages on the wrong side. This is no longer the
case in 14.0.
SPH: major improvements regarding scalability on high number of cores; performance measured on
several tests shows a solution acceleration factor of 10x about.
Multi-Domain compatibility has been extended to SPH and ALE; for FSI problems, due to their timestep and amount of elements differences between the fluid and lagrangian domains, the solution
acceleration factor is much higher than in regular crash applications, measurable in something between
6x and 15x, depending on the model. Solution theoretical acceleration factor is also estimated at the
Starter level and printed in output file.
Contact TYPE24
•
Node-to-element contact based on penalty formulation with constant stiffness; this
formulation allows large time-steps, as opposed to contact TYPE7, which may severely
affect time-steps.
•
Initial penetrations treatment (INACTI=5), with possible release of nodes with initial
penetrations, and INACTI=1000 to handle tiny initial penetrations.
•
Automatic treatment of Solids coated with shells. The contact stiffness is the highest
among the shell and the solid; the contact segment position is always determined by the
shell.
•
Scalability improved in H-MPP mode with high number of cores.
Multi-Domain
•
Single input file setup extended to FSI involving ALE and/or SPH: significant speed-up
compared to regular Mono-Domain. Speed-up factors from 5x to 15 x with industrial
models.
•
Single Time History file output.
•
/GAUGE card made compatible with ALE and SPH.
•
Starter printout of a theoretical speed-up estimate when Multi-Domain is used.
•
Starter now checks and errors out if more than 50% nodes are coupled with cross domain
contacts (was just a warning in earlier versions).
•
Failed elements converted into SPH: instead of being deleted, solid elements can be
converted into SPH particles. All failure and deletion strategies can be used, including
minimum time-step.
SPH
HyperWorks Desktop 14.0 Release Notes
205
Proprietary Information of Altair Engineering
•
Parameter to reduce tensile instability.
•
Heat transfer is enabled between SPH particles and finite elements.
•
Thermal Expansion is also available for SPH.
•
H-MPP performance improvement: an optimized domain decomposition improves greatly
the scalability on high number of cores.
Optimization
•
Design Response via Equations for Design Optimization (/DRESP2) and Equation
Definition (/DEQATN) entries are supported in RAD-OPT Format.
•
Support Free-size Manufacturing Constraints/Size Optimization for composites in
RADIOSS-Optimization (RADOPT).
•
Support Free-size Optimization for Composites in ANALYSIS=NLGEOM/IMPDYN/EXPDYN
subcase.
•
Support of 3D Topology Optimization in RAD-OPT Format.
•
Support of Velocity response in RAD-OPT and ESL-B2B.
•
Handling of “Soft” (Low-density) elements from OS ESLM Topology Optimization in RADOPT and ESL-B2B. "Soft" (Low-density) elements from OS Topology Optimization are
removed from the next RADIOSS nonlinear analysis. They are assigned to a /DEL entry in
the RADIOSS Engine file. These elements are reintroduced at the next ESLM linear static
optimization run.
•
Handling of failed elements from RADIOS Nonlinear Analysis in RAD-OPT and ESL-B2B.
Stiffness of Failed elements from RADIOSS nonlinear analysis run, is not considered when
generating the Equivalent Static Loads for the subsequent linear static optimization
problem.
•
Support more animation options (/ANIM/VECT, /ANIM/BRIC/TENS/STRAIN,
/ANIM/SHELL/TENS/STRAIN, /ANIM/Eltyp/EPSP, /ANIM/Eltyp/ENER, /ANIM/Eltyp/HOURG
and /ANIM/Eltyp/THIC).
Output
•
Output parameter value used in which card which field in output file.
•
Weld beads, glue lines: /CLUSTER defines a cluster of elements for modeling
spotweld/connection lines; failure can be applied to the cluster and/or to the single
elements There are also specific cluster outputs for post-processing /ANIM/VECT/CLUST,
/TH/CLUST.
•
New keyword /INISHE/FAIL and /STATE/SHELL/FAIL: To improve predictivity of metal
forming simulation, it is necessary to consider damage, together with stress, strain and
thinning. Need damage output for shell in .sta file. (already have damage output for
brick).
•
New keyword /ANIM/ELEM/SSP (ALE only): To output sound speed.
•
New keyword /ANIM/ELEM/SCHLIEREN: To output schlieren image (optical method widely
used in CFD field).
HyperWorks Desktop 14.0 Release Notes
206
Proprietary Information of Altair Engineering
•
New keyword /ANIM/SHELL/TDEL and /ANIM/BRICK/TDEL: Time of deletion of solid and
shell element.
•
Outputs global plastic strain (equivalent to total mean plastic strain in all integration
points) for beam (with /PROP/TYPE18).
•
Animation file is generated when Engine fails with ERROR 166.
•
AMS compatibility extended to RBE2 and RBE3.
•
Added warning if master node of a rigid body is part of the mesh now errors out if
running /AMS.
•
Compatibility checks extended to /MAT/LAW13: if it is used with AMS, Starter errors out.
AMS
Cut-Section Method
•
Read/write multiple sections into multiple SC01 files to prevent global SC01 file huge
sizes resulting from the amount of stored nodal information. Now can be split into
multiple independent SC01 files, enhancing usability, range of applications, as well as disk
space and data transfer reductions. However, backward compatibility with a global SC01
option gathering multiple sections is maintained.
Submodels
•
Compatibility extended to /SENSOR/TYPE11, and 12.
•
Local parameters: parameters can be restricted to a SUBMODEL (do not apply to any
other part of the model).
User Subroutines
•
Improved scalability on high number of cores for User Material laws.
•
Possibility to use free Fortran compilers for Windows (MinGW) and Linux (GCC); warning:
performance might not be at the same level as Intel compiler.
•
User material laws compatible with solid spotweld property.
•
Add User Animation Outputs /FAIL/SNCONNECT.
•
Possibility to specify in Starter (or execution) a specific dll. Users may need to use
different dll or even no dll at all.
•
Add deformation gradient tensor in Users' laws when Ismstr=10.
Implicit
•
Implicit nonlinear compatibility extended to /RBE2, /RBE3 and /PROP/SPR_PRE.
HyperWorks Desktop 14.0 Release Notes
207
Proprietary Information of Altair Engineering
•
Improve the convergence for implicit using /IMPL/SINIT.
Messages
•
Starter messages have been reformatted to include option titles.
•
Warning and Error messages have been compacted to improve readability and avoid huge
out files. For example, Incompatible kinematic conditions checks for rigid walls and tied
interfaces.
•
Warning message is issued in case subset, surface or group are empty (instead of Error).
•
Mass and inertia of each part are printed anytime (from the output level Ipri=0).
•
Added DOF output for RBE3.
•
Starter errors out if:
− submodel version is not supported (<= 44).
− only one node is defined for rotation axis in /TRANSFORM/ROT.
− a wrong value (besides 0 or 1) is used for /BCS.
− no defined node in input deck, which leads to NUMNOD=0 in .sta file.
− Engine errors out if invalid engine keywords are used (for example: /DT/NODE/CST is not
valid option but difficult to debug: was leading to deletion of all elements).
•
Output complete error message in case of RHO0 <= 0.0 in LAW6 for user to better
understand the error message.
•
Improved the warning message in case a 4-node degenerated triangle shell element.
Resolved Issues
Contact TYPE24:
•
Large sliding for SH3N and at corners.
•
In case of T-connections and X-connections, possible wrong direction of contact forces.
•
GapMax for shells.
•
Single precision: possible loss of contact.
•
Solids coated with shells: possible node anchorage in case of initial intersection. Improve
coating shells treatment in /INTER/TYPE24 which may leads to too small stiffness or gap
in contact.
•
Wrong forces output if shell sliding in Contact TYPE24.
•
TYPE24 + INACTI=5 Starter infinite loop.
•
No contact treated in type 24 when master surface (shell) is defined by /SURF/SEG.
•
Lost contact in int24 due to master surface using triangular shell elements.
•
Possible Starter segmentation violation error with int24 in win64 and messages repeated
too many times.
HyperWorks Desktop 14.0 Release Notes
208
Proprietary Information of Altair Engineering
•
Improvement of computational efficiency of interface type24 if using gravity in implicit
simulation.
•
Possible lose contact in interface type 24 if run with single precision.
Multi-Domain:
•
Contact across domains: Contact segments were not deleted upon element deletion (flags
Idel and Idel2 information was not passed between domains).
•
Possible Engine segmentation violation, if /ATFILE in 1.rad file exists without /ATH in
0.rad.
•
Segmentation violation in Engine phase when /TH/SUBS is present in the Starter file.
•
Use of TYPE2 with penalty formulation may lead to very low time-step in the domain with
small time-step.
•
SPH with Multi-Domain TH combined T01/T02 output plot interruption between restart
phases. May affect curve processing (for example a derivative operation).
•
/GAUGE for ALE and /GAUGE/SPH compatibility with Multi-Domain.
•
An infinite loop in the reading of .sta file at Starter level was fixed.
•
SPH/INOUT issues were fixed.
•
Starter issue with large ALE models.
•
/GAUGE/SPH failing /PARITH/ON issue was fixed.
SPH:
•
Possible Starter failure in H-MPP mode with large number of SPH particles.
•
Damage tensor (LAW24) output to animation files does not work for SPH.
•
Possible segmentation violation if mass is not defined; error message (ID=138) is
introduced for an easy localization of the issue.
•
Possible Starter segmentation violation if MAT_ID=0 is assigned to SPH. Starter will issue
an error if MAT_ID=0 is used.
•
Filtering in /GAUGE/SPH/ not working due to bad initialization of gauges which cause
F_cut frequency to be equal to 0 in all cases.
Optimization:
•
When a /ESLPART entry was defined in RAD-OPT, the RADIOSS Contact definitions
(/INTER/ entries) were not considered in the linear static optimization phase.
•
Some of the generated equivalent static load subcases had zero compliance. The ESLM
Time Step Screening Process in RAD-OPT and ESL-B2B now filters out zero compliance
(equivalent static) subcases.
Output:
•
Possible engine segmentation violation error with ANIM/BRICK/USRi.
•
Output for USER4 and USER5 in LAW58 was eingineer strain not true strain.
•
Output Null (with Isolid=17) or wrong output (with Isolid=24) in
/ANIM/BRICK/TENS/DAMA for /MAT/LAW24.
•
T02 file generated after implicit run followed by explicit run might be empty.
HyperWorks Desktop 14.0 Release Notes
209
Proprietary Information of Altair Engineering
•
Possible Engine segmentation violation error when /OUTP/SHEL/USER5 or
/OUTP/ELEM/USER5 used.
•
Animation files might be corrupted when /ANIM/SHELL/EPSP/ii and
/ANIM/SHELL/EPSP/ALL are used in same Engine input.
•
TSHELL property reports incorrect plastic strain (extremely large values).
•
Incorrect damage initialization with TETRA4.
•
The equivalent plastic strain and damage values for LAW72+Ishell=12 is wrong in TH file.
•
TH output does not take into account the contact viscous energy from /INTER/TYPE24.
•
No Plastic Strain show in contour for solid element using /MAT/LAW44 Cowper Symonds.
•
KE and TE from /TH/PART did not give the right results.
•
HyperGraph can not read results (from /THPART) in the T01 file.
•
Different results from abf output and T01 output.
•
Wrong stress results in composite layers.
•
Engine error out if /MAT/LAW01 with /STATE/SHELL/AUX/FULL.
•
Possible Engine segmentation violation error when using /TH/QUAD.
•
Wrong Output values in the abf file, if compare to the T01 Output.
•
/TH/BRIC/EPSXX output the incorrect value for part with LAW4.
•
Correct Isolid value of /INIBRI in .sta file in case Isolid=24 + TETRA4 used in model.
•
.sta file is not compatible with TETRA10.
•
Use /INIBRI/ST..._F the initial stress and strain are not correctly mapped on the model.
•
Strain tensor output in animation file for LAW25, solids and thick shells is not correct.
•
/PROP/TYPE11+LAW25: no strain tensor output in animation file.
•
/FVMBAG1 with tetra mesh and internal surfaces. Result of pressure in time history and
animation does not match.
•
Improve of the spring element output in Starter listing file *_0000.out (aligned the
comment and value).
•
Possible segmentation error in Engine, if using /OUTP/VECT/VROT for solid.
•
Starter error when using /TH/FRAME.
•
Wrong Internal Energy in case restart the job after it previously stopped by "STOP" in
control file.
•
Wrong animation results (DAMA variables and Von-Mises stress) if uses Sol2SPH
+/ANIM/BRICK/DAMA.
•
/STATE/BRICK/STRESS/FULL is not working for thick shell 16 node and for Brick 20 node.
•
Possible segmentation error in Starter due to Initialize deformation with NPT=0 in
/INISHE.
•
Wrong strain rates (always Zero) in Animation files (using /ANIM/ELEM/EPSD) for
material LAW2.
HyperWorks Desktop 14.0 Release Notes
210
Proprietary Information of Altair Engineering
•
Inertia info in warning message #542 (rigid body inertia) is wrong (mixed each other).
•
Starter blocked, if using /INIBRI/AUX.
AMS:
•
Possible instability due to large time-step and solids with full integration (Isolid=12).
•
Suppress all Warnings relating to TYPE7 v. TYPE2 interfaces slave nodes incompatibilities
when switching /INTER/TYPE2 from kinematic to penalty formulation (Spotflag 25 or 26).
•
AMS divergence with m=8 in /MAT/BARLAT3.
•
Time step higher than DTMIN for /DT/AMS and elements may cause instability in interface
elements.
Cut-section Method:
•
Cut Model cannot find SC01 file.
•
Restarts were not functioning.
•
Checks and auto-correction if some sections refer to a specific root-name and others do
not.
•
Wrong results (zero section force) if cut plane(defined with /SECT/CIRCLE, /SECT/PARAL
or /SECT with frame) is just on a row of nodes.
Submodels:
•
Units of the /RWALL parameters are not transformed in a submodel.
•
/UNIT is not applied on the submodel.
•
/FAIL/CONNECT is not supported in submodel.
•
Model crashed due to SUBMODEL, in case of more than two times transformations are
requested.
•
/MAT/LAW65 is not supported inside submodel.
•
Using submodel, M (Maxwell order flag) in LAW42 is ignored.
•
Starter errors out if more than 101 //SUBMODEL and /TRANSFORM are defined (out of
bound).
User Subroutines:
•
Advanced user laws are not working in multithread.
•
Wrong user values in animation output if user law has high number of uvar (like number
99).
•
Results repeatability (/PARITH/ON) is not ensured for solid with user defined property
(igtyp > 29).
•
Possible segmentation error in Engine, if interface type 2 with failure + using user
dynamic library.
Implicit:
•
Possible Engine crash (ISTOP=4) of BCS solver on Windows (temporary files management
on Windows).
•
Implicit simulation does not end properly on several CPUs.
HyperWorks Desktop 14.0 Release Notes
211
Proprietary Information of Altair Engineering
•
/IMPACC and /IMPVEL provide incorrect displacement for both implicit static and implicit
dynamic.
•
Possible Run freeze for implicit nonlinear with RBE3.
•
Possible Engine segmentation violation error due to Linear implicit + /INTER/TYPE24.
•
Inconsistent results between multi-proc and mono-proc by implicit nonlinear using quasinewton.
•
Possible segmentation violation error due to big memory usage in case large slave node
number of RBE2 used in implicit.
•
Possible segmentation violation error in implicit nonlinear due to wrong hierarchy
RBE2/RBE3 definition.
•
In implicit linear+ explicit in SPMD, computed external work for implicit part incorrectly
(doubled).
•
Node displacement do not respect imposed displacement value in local skew for nonlinear
implicit.
•
Wrong displacement result in implicit analysis when /IMPDISP and /BSC (using local
skew) used on the same node.
•
No convergence in implicit if solid element with orthotropic laws (like LAW28).
•
Run in SMP but failed in SPMD shortly after start due to masters of RBE3 are slaves in
Rigid body.
Messages:
•
Starter does not printout Material ID and material title in *.out message or does not print
info for number of airbag element in case automatic meshing of airbags failed.
•
Starter reports incompatibility for orthotropic material laws with sandwich property.
•
Starter prints out wrong default values for shells numerical damping (dn).
•
Starter writes wrong pressure values to 0000.out file.
•
Starter does not printout all hardening options for Springs.
•
Possible Starter segmentation violation error if user sets incompatible value for Ish3n
(Ish3n=24) in /PROP/SHELL.
•
Possible Engine segmentation violet error if use /ANIM/BRICK/TENS/STRAIN/010 or
ANIM/BRICK/TENS/STRESS/010, which those integration points are not existing.
•
Message for brick activation is not correct in case of big identifier number (more than 8
digits).
•
Correct error message which with ASCII characters.
•
Possible segment violet Starter error due to use "TEMP" in /TH/NODA in non-thermal
analysis.
•
Remove Engine warning message, if using /UPWM/SUPG + /MAT/LAW51 for /MAT/LAW51
now is compatible with SUPG.
•
Get unreadable error message, if define non exist material ID in part.
•
Rupture message repeated in Engine output file many times, if use /LAW58 +
/FAIL/TENSSTRAIN.
HyperWorks Desktop 14.0 Release Notes
212
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
213
Proprietary Information of Altair Engineering
Resolved Issues
•
Wrong Energy balance with RBE2 (initial mass is counted twice in kinetic energy
computation).
•
Results not /PARITH/ON with RBE2 in SPMD (-np 8 -nt 1 ).
•
/DEL is not working if use Idrill in property.
•
Run hanged in MPI due to issue in ANIM/LSENSOR with SPMD.
HyperWorks Desktop 14.0 Release Notes
214
Proprietary Information of Altair Engineering
MotionSolve 14.0 Release Notes
Highlights
MotionSolve is a state-of-the-art multi-body solver available in HyperWorks. It has a complete set of
modeling elements and powerful numerical methods to support a full set of analysis methods. The
accuracy, speed and robustness of MotionSolve have been validated through extensive testing with
customer models and test data. MotionSolve also offers unmatched compatibility with ADAMS/Solver
input.
The major highlights of the 14.0 release are listed below.
•
Revamped 3D rigid body contact solution that improves robustness, accuracy and
performance
•
Non-linear finite element bodies are introduced in MotionSolve (beta release)
•
Geometric stiffening support is added for linear flexible bodies
•
A new Python Lexicon is available for model building
•
Several enhancements to Linear Analysis
Improved 3D Rigid Body Contact Solution
3D contact in MotionSolve has been revamped. Described below are the pertinent changes to
the solver:
Change
Benefit
A new mesh-mesh collision
engine has been implemented
The robustness of models making use of mesh-mesh
contact improves significantly. The accuracy and
performance have also been seen to be superior to the
collision engine used in v13.0.
Contact simulations are
parallelized by default in
MotionSolve
The run time of simulations containing many contact
forces has been seen to decrease significantly, with
speedups of about 5x seen in some cases.
Special handling of primitive
spheres as colliding geometries
When your model contains contact elements that make
use of primitive spherical geometry (a sphere that is
not meshed), MotionSolve automatically switches to a
more efficient, analytical or semi-analytical collision
engine.
The advantage of doing this is that the simulation time
can be reduced by as much as 7x.
Initial penetrations are
monitored to get the exact point
of first contact
A zero crossing sensor that monitors the distance
between contacting geometries is now available. The
HyperWorks Desktop 14.0 Release Notes
215
Proprietary Information of Altair Engineering
zero crossing sensor controls integrator step-size to
precisely capture the contact event.
By doing this, large initial penetrations leading to
unrealistic system behavior are avoided.
Note: This sensor is only meaningful for impulsive
contacts. If a contact is persistent, then a zero crossing
sensor is not needed
New contact force model
A new “Volume” force model that relies on
understandable physical parameters such as bulk
modulus and shear modulus is now available. This
means that contact parameters have a physical basis
and can be easily defined.
Contact outputs are written to
the output files at times when
the penetration depth is
maximum
An option to output the system state at the maximum
penetration depth in-between two regular output steps
is now available. When you run a simulation from
MotionView, this is done automatically. You can filter
out these “extra” outputs in HyperView.
Enhanced CONTACT() function
The CONTACT() function has been enhanced to provide
many more details about the contact such as
maximum penetration depth, number of contact
patches, total number of contacts, area of contact, etc.
Contact overview table is printed Contact metrics tables are now printed in the
MotionSolve log file. You can examine the metrics table
at the end of the simulation
to determine what the maximum penetration(s) and
normal force(s) is/are in your model and when it
occurred. Two tables are printed – one ordered by
maximum penetration depth and another ordered by
maximum contact force:
Non-linear Finite Element Bodies in MotionSolve (beta release)
HyperWorks Desktop 14.0 Release Notes
216
Proprietary Information of Altair Engineering
MotionSolve 14.0 includes a beta release of the “NLFE Body” which allows you to model nonlinearly flexible components in your multibody system. The NLFE Body is based on the
Absolute Nodal Coordinate Formulation (ANCF). Nonlinearity can occur for two main reasons:
(A) Geometric nonlinearity and (B) Material non-linearity. The NLFE body supports both.
A non-linear modeling component is typically required in the following scenarios:
•
A large deformation is expected in the flexible component, or an unusually large
deformation is observed in the flexible component
•
Stresses in your flexible components approach yield point of the material
•
The flexible component is composed of non-linear hyper elastic materials like
rubber or polyurethane. The material exhibits a nonlinear stress vs. strain behavior
or is hyper elastic
•
A linearly flexible modelling component does not provide the fidelity that is desired
NLFE subsystems are included in MotionSolve as a flexible body that is specified through an
ANCF XML file. The MotionSolve XML file fragment below illustrates this.
The NLFE subsystem can consist of any combination of atomic MotionSolve NLFE elements.
For the example shown above, the NLFE subsystem is specified in the file simo-spinningbeam4_30102.xml. The contents of this file are shown in the table below.
HyperWorks Desktop 14.0 Release Notes
217
Proprietary Information of Altair Engineering
MotionSolve supports a comprehensive set of NLFE modeling elements. The table below
summarizes the current implemented atomic NLFE entities in MotionSolve. Note, that
MotionView supports only a small subset of these. You can use these in a
MotionView model by using a Templex template.
Element Type
Supported Element Set
Line Elements
BEAM9
(Gradient Deficient ANCF Beam Element)
BEAMC
Section)
(Beam Element with Circular Cross
BEAM12
(Fully Parameterized ANCF Beam)
CABLE
(Cable Element)
QUAD12
(Rectangular Thick Plate Element)
QUAD9
(Rectangular Thin Plate Element)
TRIA12
(Triangular Thick Plate Element)
TRIA9
(Triangular Thin Plate Element)
HEXA12
(C1 Brick Solid Element)
Surface Elements
Solid Elements
HyperWorks Desktop 14.0 Release Notes
218
Proprietary Information of Altair Engineering
Scalar and Bushing Elements
HEXA3
(C0 Brick Solid Element)
PENTA12
(C1 Penta Solid Element)
PENTA3
(C0 Penta Solid Element)
TETRA12
(C1 Tetra Solid Element)
TETRA3
(C0 Tetra Solid Element)
ABUSH
(Bushing Element)
LINE2
(Two nodes line spring element)
LINE3
Mass Elements
Connector Elements
Linear Elastic Material Models
Hyper-Elastic Material Models
Anisotropic Material Model
Geometric Properties
(Three nodes line spring element)
LINE4
(Four nodes line spring element)
CONGM
(Concentrated mass element connection)
CONPM
(Concentrated point mass)
CONN0
(Connector element)
CONN1
(Connector element)
CONN2
(Connector element)
CONN3
(Connector element)
MAT1
(Continuum Mechanics Approach )
MAT1LS
(Linear Strain Material Model)
MAT6
(Elastic Line Approach)
MAT2
Model)
(Incompressible Neo-Hookean Material
MAT3
Model)
(Compressible Neo-Hookean Material
MAT4
(Mooney-Rivlin material model)
MAT5
(Yeoh material model)
MAT7
Model)
(Thin Plate Element Anisotropic Material
MAT7ORT
Model)
(Thin Plate Element Orthotropic Material
MAT9
(Anisotropic Material Model)
MAT9ORT
(Orthotropic Material Model)
MAT9TRA
(Transverse Isotropic Material Model)
PABUSH
(Bushing element properties)
HyperWorks Desktop 14.0 Release Notes
219
Proprietary Information of Altair Engineering
Other Inputs
PBEAM9
properties)
(Arbitrary Cross Section Beam element
PBEAMA
properties)
(Arbitrary Cross Section Beam element
PBEAMC
(Circular beam element properties)
PBEAML
elements)
(Property card of the ANCF beam
PCABLE
(Cable element properties)
PLINE
(Line spring property)
PSHELL
(Plate elements properties)
PSOLID
(Solid elements properties)
GRID
UNITS
For more information about these elements, you may refer to the NLFE Reference Manual.
MotionSolve also writes out a 3D representation of the BEAM and CABLE elements that can be
animated in HyperView. Displacement, stress and strain contours can be visualized on the
NLFE body. Other operations such as section cuts can also be applied.
For more details, please refer to the MBS solution release notes. Also, please note that this
capability is being offered as a beta or experimental feature and is not expected to be used in
a production environment.
HyperWorks Desktop 14.0 Release Notes
220
Proprietary Information of Altair Engineering
Solver Enhancements
New Python Based Lexicon
A new Python based lexicon for MotionSolve is provided in this release. Using this lexicon, one can
now create Python applications that can:
•
Create a MotionSolve model
•
Execute the model
•
Use any other Python utilities that are useful in this context.
For instance, you could: Perform a MotionSolve simulation and display live plots during the
simulation with Matplotlib (a Python based plotting tool).
Along with the Python based lexicon, a new Python lexicon Reference Manual is also available.
Support for Multi-Iterative Coupling (MIC) in Co-Simulation with AcuSolve
With this release, MotionSolve supports multi-iterative coupling (MIC) while co-simulating with
AcuSolve. This enhancement allows MotionSolve to re-compute its system states on the fly when
needed during co-simulation. This is helpful while trying to solve “tightly” coupled problems more
accurately. With this enhancement, your co-simulation results are more accurate and the cosimulation is more robust.
MS_USERDLL_DIR Supports Python Scripts
You can use the MS_USERDLL_DIR environment variable to specify the location of your Python
scripts (*.py, *.pyc) as well as your C++/FORTRAN user subroutines.
The environment variable MS_USERDLL_DIR can be set to a list of folder locations on your machine
(separated by ;) where you want MotionSolve to search for your user subroutines (*.dll, *.so).
This scenario is common when you don’t specify the absolute path of the user subroutine in your
model or if the user subroutine is not in the same location as the solver input XML file.
Geometric Stiffening for CMS Flexible Bodies
You can model geometric stiffening for CMS flexible bodies in MotionSolve. Geometric or stress
stiffening is an effect most commonly seen in beams under tension where the frequency of the
fundamental modes increases as the tension is increased. Such an effect can be observed in rotating
beam structures like helicopter or wind turbine rotor-blades.
Include the stress stiffness data in your CMS flexible body by including the following in your FEM
file:
•
CMSMETH, 1, CBG, , 15
CBG is the keyword that instructs OptiStruct to create the CMS flexible body with additional
geometric stiffness data
You can then import this flexible body in your MotionView model as you would ordinarily.
HyperWorks Desktop 14.0 Release Notes
221
Proprietary Information of Altair Engineering
Note: Only the Craig-Brampton method is currently supported for calculating the geometric stiffness
data.
Linking with msautoutils via the User Subroutine Build Tool
The user subroutine build tool shipped with this release of MotionSolve now links with the
msautoutils library on both Windows and Linux. You can now use access functions exported by the
MotionAuto Utilities as well as the MotionSolve UserSub API. This substantially simplifies the effort
on your part to create your own road or other Auto functionality based on the published set of
capabilities.
Updated ISTAT Codes for the GTCMAT Utility Subroutine
The ISTAT return codes for the GTCMAT utility have been updated in MotionSolve.
ISTAT= 0
Normal return.
Compliance matrix was calculated.
ISTAT= -1
Error return.
NM < 0.
ISTAT= -2
Error return.
NM > 100.
ISTAT= -3
Error return.
NC < 6*NM.
ISTAT= -6
Error return.
MKID refers to a non-existent REFERENCE_MARKER.
ISTAT= -7
Error return.
The system has zero degrees of freedom.
ISTAT= -9
Error return.
calculations.
A singular Jacobian matrix was encountered during the
ISTAT=-11
Error return.
A REFERENCE_MARKER is on GROUND.
ISTAT=-12
Error return.
An initial static equilibrium was not performed.
ISTAT=-99999
Error return.
It cannot move.
Linear Analysis Enhancements
Many enhancements have been added to Linear Analysis. These include:
•
A new option for “balancing” prior to eigenvalue analysis
•
Support for strain/dissipative energy calculations
•
Mode selection for linear analysis output
The updated statement is shown below with the 14.0 enhancements in red.
HyperWorks Desktop 14.0 Release Notes
222
Proprietary Information of Altair Engineering
A new capability for “balancing” prior to eigenvalue analysis
For certain models, the eigenvalues calculated are sensitive to very minor changes in the state
matrix used as input for the solution. This occurs when the eigenvector matrix is ill conditioned.
MotionSolve detects an ill conditioned eigenvector matrix and “balances” the state matrix for a more
robust eigenvalue solution.
Balancing refers to diagonally scaling the state matrix such that the row and column norms are
numerically close to each other. You can control this behavior using the attribute “balancing” in the
<Param_Linear> model or command statement.
Set “balancing” to “TRUE” to force MotionSolve to perform balancing on the state matrix and
“FALSE” to disable balancing. The default for “balancing” is “AUTO” which lets the solver decide
when balancing is required based on the condition number of the eigenvector matrix. Please note,
that balancing is a very inexpensive operation.
Support for strain/dissipative energy calculations
For linear analyses, in addition to Kinetic Energy distribution, MotionSolve also calculates strain and
dissipative energy for the following modeling elements:
•
Force_SpringDamper (TSPDP/RSPDP)
•
Force_Bushing (BUSH)
•
Force_Beam (BEAM)
HyperWorks Desktop 14.0 Release Notes
223
Proprietary Information of Altair Engineering
•
Force_Field (FIELD)
•
Force_VectorOneBody/Force_VectorTwoBody (VFORCE, VTORQUE, GFORCE)
•
Force_Scalar_TwoBody (SFORCE)
The KE, strain and dissipative energy distribution is written to the log file, on the screen and the
*_linz.mrf output file. To request MotionSolve to calculate these distributions, set the
write_energy_dist attribute to “TRUE” in the <Param_Linear> model or command statement.
Mode selection for linear analysis output
You can now specify the modes for which MotionSolve writes the energy distribution on screen and
to the log file. This is useful when the number of eigenmodes is large and you are interested only in
a subset.
You may specify mode numbers to include or exclude, for each of the three distributions. Please see
the documentation on <Param_Linear> for more details on how this is done.
Header Format Change for PLT Output Files
With this release, the header for the PLT output files has been changed to allow the PLT file to be
imported into FEMFAT for fatigue analysis. The old and new PLT format are described below:
Old format: The old format contains 4 columns for each request and the version number is 8.1.
New format: The new format contains 5 columns for each request and the version number is 9.1.
The fifth column is added as per the specifications from FEMFAT. If this value is non-zero, then the
next line is treated as a comment line.
Kinematic analysis for “structure” models
Previously, MotionSolve did not solve models that have 0 DOF and time dependent loading. To solve
such models you needed a workaround with “dummy” differential equations etc. With this release,
MotionSolve has been enhanced to recognize 0 DOF models that have time dependent loading such
HyperWorks Desktop 14.0 Release Notes
224
Proprietary Information of Altair Engineering
that the simulation can continue. Such a scenario is useful when trying to determine joint reaction
forces for models with 0 DOFs.
HyperWorks Desktop 14.0 Release Notes
225
Proprietary Information of Altair Engineering
ADAMS Compatibility
FX function compatibility
The definitions of the functions FX, FY, FZ, TX, TY and TZ have been made consistent with
what is used in ADAMS. The table below lists the changes, using the FX function as an
example:
Function
Arguments
Behavior
FX (I, J, K)
I, J and K markers
Computes the X component of all the forces
acting between marker I and J resolved in the
coordinate system of marker K
FX (I, J)
I and J markers
Computes the X component of all the forces
acting between marker I and J resolved in the
ground coordinate system
FX (I)
I marker
Computes the X component of all the
resultant forces at marker I. To calculate the
X component of action-only forces at the I
marker, specify frc_expr_action_only =
“TRUE” in the <ResOutput> command
element in the XML input file
GRAPHIC Statement Compatibility
MotionSolve now supports the adm statement GRAPHICS/… for displaying force vectors in the
animation H3D. A sample statement is
GRAPHICS/10215001, FORCE, ETYPE=ALL, EM=10215001
The following ETYPE are now supported:
ETYPE
ALL, BEAM, BUSH, FIELD, GFORCE, JOINT, JPRIM, NFORCE, SFORCE, SPDP, VFORCE, VTORQUE
HyperWorks Desktop 14.0 Release Notes
226
Proprietary Information of Altair Engineering
Correct Conversion of Output Steps to XML for Multiple Analyses
Previously, a model that had multiple SAVE/RELOAD statements and analyses with different output
steps was not translated correctly to MotionSolve. An example of such a scenario is shown below:
This has been resolved within this release.
HyperWorks Desktop 14.0 Release Notes
227
Proprietary Information of Altair Engineering
Resolved Issues
Solver Behavior Updated for Vehicle Models Containing Tires
With this release, the solver behavior for any model that contains tires has been updated to produce
more accurate velocities and accelerations. The solver now recognizes force elements that model the
tire and monitors the rotating wheel bodies so that the velocities and accelerations are computed
more accurately.
For models that make use of the <Force_VectorTwoBody> modeling element to represent tires, you
can expect to see smoother results slip ratio and tire rotational velocity.
Using Python User-Subroutine Scripts on a Different Network Location than MotionSolve
Previously, MotionSolve was unable to access a Python script that was not located on the same
machine as the MotionSolve installation. This issue has been fixed, now, you can run a simulation in
a scenario where MotionSolve in installed on one machine and the scripts are located on another
network location.
Note: You need to have read access to the network location where your scripts are located.
Flexbody Visibility of MotionSolve H3D in HyperView
Previously, if your model consisted of multiple flexible bodies generated using a combination of
PLOTEL and non-PLOTEL elements, the flexible bodies would not be displayed properly in HyperView.
This issue has been fixed within this release.
Resolved Issues in Linear Analysis
Several issues have been fixed for the linear analysis within this release:
•
If you request Simulink or MATLAB output files after a linear analysis, MotionSolve
requires a valid <Control_PlantInput> model element that defines the input and a
<Control_PlantOutput> model element that defines the output for the linearized system.
If these IDs are not specified or specified incorrectly, MotionSolve will issue an error
message and stop the simulation. These IDs can be specified via the pinput_id and
poutput_id attributes in the <Param_Linear> model or command statement. See the
documentation for <Param_Linear> for more details. For some models, MotionSolve
wrote incorrect B and C matrices after a linear analysis when “write_matlabfiles” is set to
TRUE. This was determined to be an issue with numerical tolerance and has been fixed
for this release.
− For a model that contained only flexible bodies, MotionSolve crashed while writing the Kinetic
Energy distribution. This issue has been fixed within this release.
− While requesting a linear analysis on a model with no force elements (or zero total force),
MotionSolve crashed during the linear analysis simulation. This was determined to be an error
in the solver code and has been resolved starting with this release.
•
When the ADM/ACF deck contained more than one linear command statements, the
translation to XML resulted in a <Param_Linear> statement which was not equivalent.
This has been resolved within this release.
HyperWorks Desktop 14.0 Release Notes
228
Proprietary Information of Altair Engineering
Building User Subroutines by using the GCC Compiler on Linux
In the previous release, you were unable to link your user subroutine code with the MotionSolve
user subroutine API library (ms_usersubapi) using the GCC compiler. Starting with this release, this
restriction has been removed. Now you can use both the GCC and Intel compilers to compile and
link your user subroutine code.
Incorrect Gear Ratio Calculated When Using the Constraint_Gear Modeling Element
Previously, a gear modeled using the <Constraint_Gear> statement resulted in an incorrect gear
ratio calculation in the solver. This has been fixed within this release.
The SENVAL Function Returns an Incorrect Value When the Sensor is not Activated
The SENVAL function should return a value of 0 when the sensor it refers to is not active during the
simulation; this behavior was not seen in the previous release. This has been fixed starting with this
release.
SENSOR Causes a Crash if Deactivated Before the First SIMULATE Command
If your model contains a <Sensor_Event> modeling element that is deactivated before the first
<Simulate> command is executed, the simulation would crash with the previous release.
This was determined to be a bug and has been fixed with this release.
Post-processing Module (MS-Post) Crashes with ‘0’ Specified as a Marker ID
Previously, the post processing module in MotionSolve crashed if your model contained an output
request that referred to a ‘0’ marker ID. This scenario may occur with older MotionSolve models.
This has been fixed such that the post module simply ignores such a marker request.
PROXIMITY Function Referring to a Deactivated Sensor Crashed the Simulation
Previously, if your model contained a PROXIMITY function that referred to a deactivated sensor in
your model, the simulation would crash in such a scenario. This has been fixed such that the use of
such a PROXIMITY function does not halt the simulation.
Note: It is important to keep track of which sensors are deactivated in your model since the
PROXIMITY function referring to a deactivated sensor will return a 0 value.
Rigid Body Contact for Box Graphic Defined with a Negative Length
HyperWorks Desktop 14.0 Release Notes
229
Proprietary Information of Altair Engineering
Previously, if you modeled 3D rigid body contact with at least one body being a box graphic defined
by a negative length, the contact force was not generated as expected. This has been fixed with this
release.
IF Function Doesn’t Return User Defined Value
Previously, if you defined a solver variable using multiple IF statements and queried the solver for
this variable’s value in a Post_Request using VARVAL(..), MotionSolve did not return the exact
values for the variable as defined by the user. Specifically, the values were incorrect at the points
where the gradient of the expression for the solver variable is discontinuous.
This issue can be resolved by specifying dae_interpolation = “FALSE” in the <Param_Transient>
model or command statement in the MotionSolve XML input file.
Missing "XP" and "ZP" of Marker in XML
Markers with direction cosine matrix very close to the identity matrix were not translated correctly
to the MotionSolve XML input file. This was caused by a loose numerical tolerance in MotionSolve.
Sign of Velocity at Discontinuous Operating Point
Previously, for a kinematically constrained model, if you specified a motion on a joint using multiple
IF statements, the velocity of the marker associated with the joint showed a difference if the model
was solved using the VSTIFF or DSTIFF integrator.
This has been fixed within this release – the choice of the integrator does not matter for such a
kinematic model.
Note: Use of the IF function to define motions is not recommended in MotionSolve, since the IF
function tends to produce discontinuities which make it hard for the solver to converge and can
produce erroneous results in certain cases. Please refer to the documentation on <Motion_Joint> for
more tips on defining smooth motion inputs.
Incorrect Gear Ratio When Using “Constraint_Gear” Model Element
Previously, a gear modeled using the <Constraint_Gear> statement returned an incorrect gear ratio
in MotionSolve. This has been fixed within this release.
State Variable Doesn't Return User Defined Value Correctly, Especially in Transient
Analysis
Previously, a Motion defined as a saw-tooth function using a series of IF statements returned results
inconsistent with the user input. This has been fixed within this release.
Multiple Simulates with Time Dependent Motion Result in Incorrect Answers
HyperWorks Desktop 14.0 Release Notes
230
Proprietary Information of Altair Engineering
Previously, if your model contained multiple Simulate commands and a <Motion_Joint> modeling
element was modified in between the analyses, MotionSolve did not update the <Motion_Joint>
value correctly thus yielding incorrect results or simulation failure. Such a scenario is shown below:
This has been resolved with this release.
Suspension Design Factor (SDF) Outputs Caused Certain Models to Fail During GTCMAT
Calls
Previously, certain models that had SDF outputs defined in them failed the GTCMAT calls. This was
determined to be an issue in the solver code and has been fixed with this release.
Save and Load Issue with Models Containing Joint Friction
Previously, if you save and load your model that contains joint friction modelling elements, the
reloaded model will not solve correctly. This has been identified as an error in writing the model
upon saving.
HyperWorks Desktop 14.0 Release Notes
231
Proprietary Information of Altair Engineering
Known Issues
Using Non-linear Finite Element Bodies
Certain models containing NLFE components may not solve with max_order > 2. Try to set the
max_order to 1 or 2 and re-run your model
The damping parameter for NLFE components is a coefficient for a Rayleigh damping model. Since
this is a numerical damping, it is advised to start from a value of 0 in your model, since critical
damping can be achieved with a small value and a larger value may yield unrealistic results.
Wrong Results with Custom Elements for a Specific Scenario
When using a custom element definition (including <Force_JointFriction>) that uses GFORCE with
the ground being defined as the I body, the results may be incorrect. As a workaround, insert a
dummy body between the ground and the J body.
HyperWorks Desktop 14.0 Release Notes
232
Proprietary Information of Altair Engineering
HyperXtrude Solver 14.0 Release Notes
HyperXtrude for Metal Extrusion
Automatic Ram Speed Correction Based on Press Tonnage
The solver can automatically adjust the ram speed based on the limits imposed by the press data.
This will help to determine the maximum ram speed possible on the press for the given process
data.
Improvements to Modeling Choked Bearing
An improved algorithm is implemented to compute friction at choked bearing regions based on test
data and the computed results correlate well with extrusion field data.
Dead Cycle Time
The solver is enhanced to include dead cycle time in a full cycle transient analysis. This helps in
computing more accurate temperature distribution before the next cycle begins.
Thermal Analysis of Tool Heating Systems
The solver has a new feature to do a thermal analysis of the tool heating systems and control tool
assembly temperature. HyperXtrude can now perform a transient analysis to monitor temperature at
the pre-defined thermocouple locations and control the heating elements based on the feedback
from thermocouples. Since temperature plays a critical role in extrusion, this analysis is useful in
understanding and controlling the thermal systems that heat components such as, container, liner,
and die assembly.
IGES File Export of Optimized Bearing Curves
When doing bearing optimization, HyperXtrude will now write CAD files in IGES format for the
optimized/corrected bearing curves. This will enable easy import of these optimized bearing curves
into HyperMesh or HyperXtrude 2015.
Tool Deflection Analysis Using OptiStruct
The solver is enhanced to perform coupled simulation using OptiStruct for tool stress analysis. In
this approach, after performing extrusion analysis on the workpiece, HyperXtrude will automatically
invoke OptiStruct with the computed loads to perform tool stress analysis. Extrusion analysis is then
continued by taking computed tool displacements into consideration.
HyperWorks Desktop 14.0 Release Notes
233
Proprietary Information of Altair Engineering
Resolved Issues
•
Error in writing displacements in H3D file for bearing optimization runs has been resolved.
•
Improvements to bearing friction module has been made to increase the accuracy of the
solver.
•
Resolved errors in gap contact load computations in coupled analysis using HyperXtrude.
•
Resolved limitations in particle traces module. This data is used with a standalone code
for visualizing particle traces with history in HyperView.
•
Resolved issues when skin tracking is enabled in models that use lookup table for
material data.
•
Enabled function/table specification of heat transfer on free surface BCs.
•
Resolved many minor issues related to transient analysis as part of dead cycle time
implementation.
HyperWorks Desktop 14.0 Release Notes
234
Proprietary Information of Altair Engineering
HyperXtrude for Polymer Extrusion
Improvements to Calibration Analysis
Major enhancements are made to calibration analysis and these include improvements to
computational time and extracting additional useful results specific to cooling of the extruded profile.
New results include solidified layers, solidification time, degree of cooling, and cooling time.
Resolved Issues
•
Issues related to viscosity data in lookup table format (as function of strain rate and
temperature) have been resolved.
HyperWorks Desktop 14.0 Release Notes
235
Proprietary Information of Altair Engineering
HyperXtrude for Resin Transfer Molding
Resolved Issues
•
Issues related to VARTM resin infusion has been fixed.
•
Improved robustness of filling even for complex models with drastically varying data
HyperWorks Desktop 14.0 Release Notes
236
Proprietary Information of Altair Engineering
AcuSolve 14.0 Release Notes
Highlights
The 14.0 release of the AcuSolve product suite continues to build on Altair's class leading solver
technology. The latest release of the software delivers new technologies to expand capabilities and
improve usability. The 14.0 release provides improvements to AcuSolve's moving mesh technology,
new multiphysics coupling in the form of finite mass particle tracing, revised turbulence models, newly
developed tutorials, an expanded validation manual, and many other enhancements. In addition to
these new features, a number of critical bugs have been addressed in this release, further improving
the quality of the product for end users. The details of the release are provided in the following
sections.
Finite Mass Particle Tracing Using AcuSolve and AcuTrace
AcuTrace has been enhanced to support tracing of spherical particles having finite mass. When
exercising this option, the particle velocity is no longer governed solely by the local flow velocity.
The motion of the particle is computed by solving a conservation equation that incorporates the
mass of the particle, the pressure force, the drag force, the viscous stresses, and the virtual mass
force. The user is given control over which terms in the conservation equation should be included
at run time and various drag laws are available to choose from. Wall/particle interactions are
handled with user-specified coefficients of restitution to define the energy loss as a result of the
collision.
In addition to supporting finite mass particle tracing, the bi-directional coupling between AcuSolve
and AcuTrace also provides support for momentum exchange. For the case of bi-directionally
coupled finite mass particle tracing, the effect of the particle's presence appears in the AcuSolve
flow field. The momentum of each particle is computed, and the corresponding reaction force is
added to AcuSolve as a source term in each element that the particle passes through.
Finite mass particles in suspension within a mixing tank
Buoyant particles rising in a tube
Note that particles are limited to idealized, spherical shapes in the current release, and the particles
are assumed to constitute a dilute and disperse phase within the fluid. In addition to this, particleparticle collisions are not yet supported. As a general guideline for use, it is suggested that the
HyperWorks Desktop 14.0 Release Notes
237
Proprietary Information of Altair Engineering
ratio of particle spacing to particle diameter should be on the order of 10 or greater for massless
particles and on the order of 100 or greater for finite mass particles.
Common applications for finite mass particle tracing include fluidized bed simulations and other
applications involving the transport of small particulates within a flow field.
Revised Implementation of SST and k-omega Turbulence Models
The 14.0 release contains major improvements to the SST and k-omega turbulence models within
AcuSolve. The new formulation improves the accuracy and robustness of the models by
incorporating a change of variables for the omega equation. Instead of solving for the standard k
and omega equations, the new formulation solves for k and
. The change of variables does not
alter the results produced by the underlying turbulence model, but does have significant benefits
with respect to numerical robustness. The new formulation has vastly improved near wall behavior;
having a much more agreeable wall boundary condition of 0.0 for the omega transport equation, as
well as the ability to be managed easier through wall functions. Internal testing and validation has
shown that this change of variables produces far superior behavior of the models in comparison to
past releases.
SST results showing flow over a rail car
A comparison of convergence rate between turbulence
models for the rail car
The new models are fully compatible with input files created in older versions of the code.
nodal initial conditions and boundary condition values are still specified in terms of the
The
eddy_frequency variable. All conversions to the newly introduced transport quantity (
) are
handled automatically. The new transport quantity (sqrt_eddy_period) will appear in nodal field
outputs along with the kinetic_energy and eddy_frequency variables.
The revised implementations of SST and k-omega are complete with support for wall functions and
wall roughness. Internal testing has shown that a stretch ratio of 1.3 provides optimal results when
using wall functions.
It should be noted that the most efficient solution strategy for these models involves iterating
multiple times on the turbulence variables for every iteration of the flow equations. AcuSolve's
AUTO_SOLUTION_STRATEGY command has been updated to reflect this solution strategy.
HyperWorks Desktop 14.0 Release Notes
238
Proprietary Information of Altair Engineering
New Mesh Quality Metric (MQM) Technology Added to ALE Mesh Motion
AcuSolve's Arbitrary Lagrange-Eulerian (ALE) mesh motion technology has historically been based on
a hyperelasticity model to control the deformation of the mesh. Using this approach, the stiffness of
a given element is assigned based on the proximity to the motion. In general, this leads to behavior
where the elements closest to the motion exhibit high levels of deformation regardless of their size.
In many cases, this formulation leads to undesirable results. A new method of computing the motion
of the mesh has been introduced in AcuSolve V14.0. Using the new formulation (i.e. Mesh Quality
Metric or MQM), the mesh deforms in such a manner as to maintain the original shape of each
element. Each time the boundaries of the simulation are deformed, the mesh is updated using an
algorithm that attempts to optimize the quality of the mesh. The original shape of the elements is
used as the reference for which the mesh was assumed to be of optimal quality. In practice, this
method has a number of benefits over the hyperelastic model. This technique implicitly retains the
shape of elements within the boundary layer, which reduces user burden to constrain near wall nodes
to move with deforming surfaces. Additionally, this method inherently moves large deformations to
the larger elements in the domain. Even with ~5000:1 aspect ratio elements near a deforming wall,
the MQM approach retains the structure of the boundary layer elements while absorbing the
deformation in the far field elements. See the images below for an example of the behavior of MQM.
Note that the hyperelastic model required constraints on the boundary layer elements to deform to
the level shown, whereas the MQM approach handled the boundary layer elements without additional
constraint.
The mesh deformation predicted by hyperelastic mode
Mesh quality metric
Support for Mixed Topology Surfaces and Volumes
AcuSolve V14.0 now supports the definition of surfaces and volumes using mixed element topology.
In previous releases of the solver, it was necessary to specify all input commands such that only a
single parent element set and element type were referenced by each command. This restriction
has been eliminated with the 14.0 release and all solver input commands are functional using the
mixed topology input.
Support for the mixed topology input is achieved through the introduction of the SURFACE_SET and
VOLUME_SET commands. With these commands in place, it is now possible to read in the individual
surface and volume definitions for later reference in the input file. Surface sets or volume sets of
different topology may then be referenced in a single solver command.
HyperWorks Desktop 14.0 Release Notes
239
Proprietary Information of Altair Engineering
Illustration of mixed topology surface input in AcuSolve.
For example:
# +----------------------------------------------------------------------+
# | Surface sets
|
# +----------------------------------------------------------------------+
SURFACE_SET( "inflow tri3 Fluid wedge6" ) {
surfaces
= Read("MESH.DIR/inflow.tri3.ebc.B" )
shape
= three_node_triangle
volume_set
= "Fluid wedge6"
}
SURFACE_SET( "inflow quad4 Fluid brick8" ) {
surfaces
= Read( "MESH.DIR/inflow.quad4.ebc.B" )
shape
= four_node_quad
volume_set
= "Fluid brick8"
}
# +----------------------------------------------------------------------+
# | Simple Boundary Condition
|
# +----------------------------------------------------------------------+
SIMPLE_BOUNDARY_CONDITION( "inflow" ) {
surface_sets
brick8"}
= {"inflow tri3 Fluid wedge6","inflow quad4 Fluid
type
= inflow
inflow_type
= average_velocity
HyperWorks Desktop 14.0 Release Notes
240
Proprietary Information of Altair Engineering
average_velocity
= 1.0
}
SURFACE_OUTPUT( "inflow" ) {
surface_sets
brick8"}
= {"inflow tri3 Fluid wedge6","inflow quad4 Fluid
integrated_output_frequency = 1
}
This new capability represents a significant change to the architecture of AcuSolve and is being
released in phases. This first release includes support for all solver commands in the AcuSolve
input file, and full post-processing support in AcuTrans, AcuFieldView, AcuProbe, and HyperView.
The new input file format is currently not supported by AcuConsole, HyperMesh, AcuTrace, or
AcuFwh. Support for the new format will be added to the remaining programs in a future release.
Note that AcuSolve continues to support the older, single topology format for all commands as well.
As such, full backward compatibility is retained.
Introduction of the AcuSolve Tutorials
The AcuSolve installation now comes equipped with tutorials that provide detailed instructions for
getting started with the code and working with some of the more commonly used features. The
purpose of the document is to provide self contained sets of exercises and instructions for both new
and experienced users of the software. The tutorials provide a brief overview of each simulation
that is covered, along with the instructions on how to properly set the model up. All prerequisite
files necessary to perform the simulations are included. The instructions within each tutorial include
details on the meshing, solver settings, as well as post-processing of the model.
As with other AcuSolve documentation, the tutorials are available from the AcuSolve Help Welcome
page. All files necessary to run the simulations that are described in the document are available in
the distribution within the following directory:
<installation_directory>/model_files/tutorials/AcuSolve>. The current version includes 5
tutorials, ranging in complexity from steady, isothermal flow to externally coupled multi-physics
applications. Additional tutorials will be added in future releases of AcuSolve.
AcuSolve Help Welcome Page showing links to the
AcuSolve tutorials
Results from the translating check valve tutorial
Addition of Smoothing to Interpolated Mesh Motion
HyperWorks Desktop 14.0 Release Notes
241
Proprietary Information of Altair Engineering
A newly developed smoothing algorithm has been added to interpolated mesh motion (MMI). The
impact of smoothing is to improve the behavior of MMI when the background mesh introduces local
oscillations in the displacement in the mesh. This option reduces the likelihood of elements
collapsing and also smooths the overall displacements that are enforced by MMI. It should be
noted that this feature does have some additional implications. Under these conditions, the
interpolated mesh motion algorithm is allowed to modify the position of any node that has MMI
applied to it. For degrees of freedom that are not entirely constrained by the MMI, the smoothing
algorithm can modify the position. For example, the behavior of mesh_displacement_type = slip
is now different for surfaces that are part of an element set that contains an interpolated mesh
motion. The unconstrained degrees of freedom (in the wall parallel direction) are now controlled by
the smoothing algorithm and can have non-zero displacement.
Separation of Mesh Motion Constraints from Simple Boundary Condition Commands
AcuSolve's SIMPLE_BOUNDARY_CONDITION command was developed as a mechanism to automate the
application of suitable constraints to represent common types of physics. Inlets, walls, and outlets
are examples of the common physics that are addressed by SIMPLE_BOUNDARY_CONDITION. As part
of this command, the constraints that dictate the mesh motion were also added. Although this does
provide a convenient way of assigning constraints, it can introduce some restrictions in flexibility.
To alleviate this, a new command has been created that separates the mesh motion constraints
from the SIMPLE_BOUNDARY_CONDITION command. The new command, MESH_BOUNDARY_CONDITION,
provides a centralized mechanism for assigning mesh motion constraints that were previously
associated with the SIMPLE_BOUNDARY_CONDITION, FREE_SURFACE, and EXTERNAL_CODE_SURFACE
commands. To accomplish this, AcuPrep internally creates a table of constraints for each element
face/node on the boundaries and identifies conflicts within the mesh motion boundary conditions.
These conflicts may arise due to combinations of MESH_BOUNDARY_CONDITION and the legacy
commands that provide similar functionality. In the case of conflicting constraints that have equal
precedence values, the MESH_BOUNDARY_CONDITION is given priority. If the precedence values are
not equal, then the higher precedence constraint is enforced. AcuPrep also checks for compatibility
of the mesh motion boundary conditions on each node with the boundary conditions applied for the
physics through the SIMPLE_BOUNDARY_CONDITION command.
An example showing how to use the newly introduced command to define a planar_slip mesh
motion constraint is as follows:
MESH_BOUNDARY_CONDITION ( "slip wall" ) {
surface_sets
= {"tri faces","quad faces"}
type
= planar_slip
}
The introduction of the MESH_BOUNDARY_CONDITION command deprecates the FREE_SURFACE and
EXTERNAL_CODE_SURFACE commands. In addition to consolidating commands, the
MESH_BOUNDARY_CONDITION implementation contains more complete error checking. Surfaces that
are defined as planar_slip (equivalent to mesh_displacement_type=slip in
SIMPLE_BOUNDARY_CONDITION) are now checked to ensure that a consistent normal direction exists
for the entire surface set. Full details of the command, along with all supported options, are
included in the AcuSolve Command Reference Manual.
The MESH_BOUNDARY_CONDITION command is currently supported within the solver and postprocessing programs. Full GUI support will be added in a future release. Note that AcuSolve
HyperWorks Desktop 14.0 Release Notes
242
Proprietary Information of Altair Engineering
continues to support the legacy commands that provided control over mesh motion boundary
conditions. As such, full backward compatibility is retained.
Added Support for Distributed Memory Parallel Runs Across Windows Machines
AcuSolve now supports running in distributed memory parallel mode across multiple Windows hosts.
In the past, this could only be achieved when running on a Windows HPC Server cluster. This
restriction has been lifted, and it is now possible to run in parallel on multiple Windows hosts using
Intel MPI, Platform MPI, MS-MPI, and MPICH2. It should be noted that some set-up work is
required to install services and create shared directories. Please see the HyperWorks Installation
manual for further instructions.
As part of this effort, the process of setting up parallel simulations for single host applications has
been simplified as well. It is no longer necessary to install the SMPD daemon for Intel MPI when
running in parallel on a single Windows host.
Improved CFD Post-processing With AcuFieldView
AcuSolve 14.0 comes equipped with a new version of AcuFieldView that is based on Intelligent
Light's most recent release of FieldView. This release of AcuFieldView provides significant
improvements when working with AcuSolve data. The AcuSolve direct reader has been updated to
provide full support for mixed element topology surfaces. In addition to this enhancement, the
performance of the direct reader has been improved dramatically. The performance improvements
have been accomplished through a combination of code changes as well as newly added options that
enable the user to skip compute intensive steps that are not necessary for all simulations. Some of
the changes that have been made include an ability to avoid reading of AcuSolve's extended output
variables. Disabling this option alone can improve read times by as much as 2x. Users have the
option to remove duplicate surfaces as well, which brings consistency with AcuTrans. Please see
the AcuFieldView User Guide for full details.
Multiple images displaying custom color maps and a multi-window layout.
Other Notable Changes
HyperWorks Desktop 14.0 Release Notes
243
Proprietary Information of Altair Engineering
AcuSolve 14.0 contains a number of other notable changes that are worthy of mention.
description of each is shown below:
A brief
•
Uniformity index has been added as an output quantity.
statistics output.
•
User defined functions on Windows now automatically recompile at run time if the library
corresponding to the requested message passing protocol is not present.
•
moment_center has been added to AcuTrans to enable user control of the location about
which moments are computed. In previous releases, the moment was always computed
about the global origin.
•
Added ability to specify viscosity as a function of pressure.
•
Added support for reading binary mesh files in all supported programs (AcuProj, AcuSif,
etc.)
•
Added center_of_mass output quantity to ELEMENT_OUTPUT command.
•
Improved the performance and scalability of search algorithm used for
INTERFACE_SURFACE command.
•
Added ability to convert flexible body forces and displacements to table and statistics
format using acuTrans.
•
Added support for slip wall mesh displacement when coupling to MotionSolve.
•
Added surface names into Patran files created by AcuTherm.
•
Added ability to define external forces for rigid bodies using user defined functions.
•
Added support for MS-MPI message passing protocol when running outside of Windows
HPC Server environment.
•
Added -mpiopt command line argument to AcuRun to enable specification of command
line arguments to the mpirun command. The default value is _auto, which reverts to
previous behavior.
•
Speed improvements to AcuTrans and other utilities that access AcuSolve's nodes and
elements through the adb API.
•
Added ability to assign nodal initial conditions based on user defined functions and curve
fits. The NODAL_INITIAL_CONDITION command is now able to have multiple instances
for a given variable as well. This allows assigning initial conditions on different
collections of nodes using different approaches.
•
Added the allow_stagger_reordering option to the TIME_SEQUENCE command to allow
AcuSolve to change the stagger order if it determines that changing the sequence of
equations will lead to better stability. Note that this option will only have an effect for
problems containing FREE_SURFACE commands at the current time.
•
Changed the behavior of mesh_displacement_type=slip parameter in the
SIMPLE_BOUNDARY_CONDITION command such that only planar surfaces are accepted.
•
Added the ability to read lists of strings from file for all commands that accept a list
argument. For example, it is possible to read a list of surface sets into the
SIMPLE_BOUNDARY_CONDITION command by placing them into a file.
HyperWorks Desktop 14.0 Release Notes
This quantity is part of surface
244
Proprietary Information of Altair Engineering
Notable Resolved Issues
•
Resolved a problem with the ALE formulation that could induce significant parasitic
velocities on interior nodes.
•
Updated domain decomposition methods to enforce consistent behavior across Windows
and Linux platforms.
•
Fixed a crash when integrated inflow conditions
(inflow_type=mass_flux|average_velocity|flow_rate) were used on a surface with
no no-slip walls adjacent to it.
•
Fixed a bug that produced asynchronous time marching in AcuSolve/MotionSolve cosimulations.
•
Fixed a bug that caused an assertion when computing turbulent diffusivity when the
species stagger is not active.
•
Fixed a bug that prevented wall_velocity_type=normal from being enforced.
•
Fixed an overallocation of memory in AcuTherm when using fct=direct.
•
Fixed a bug that caused spurious results when using the INTERFACE_SURFACE command
on prism elements.
•
Fixed a bug that caused thermal undershoot when viscous heating was active and played
a dominant role in the heat transfer.
Changes to Supported Platforms and Third Party Packages
•
Updated Linux kernel to 2.6.18-348
•
Removed mvapich entirely from installation packages and discontinued support
•
Updated Intel MPI to version V5.1
•
Updated Platform MPI to V9.1.2 community edition
•
Updated MPICH to v3.1.3 on Linux and V1.4.1 on Windows
•
Updated Microsoft MPI to V5.0.
•
Rearranged the location of MPI libraries in the distribution to support unification across all
Altair solvers.
•
Discontinued support for mx-mpi and gm-mpi.
these executables are shipped.
•
Removed and discontinued support for Octigabay MPI.
•
Removed and discontinued support for Cray MPI.
•
Included redistributable ms-mpi installer package in Win 64 package.
This will be the last release for which
Changes in default behavior
HyperWorks Desktop 14.0 Release Notes
245
Proprietary Information of Altair Engineering
The AUTO_SOLUTION_STRATEGY command now solves the mesh stagger first when performing
simulations with mesh motion present.
Summary of New/Changed AcuSolve Input File Commands
The following table summarizes the changed or newly introduced AcuSolve input file commands.
Note that a full description of each command is available in the AcuSolve Command Reference
Manual.
AcuSolve Command Name
Description
Added rigid_body_external_force_type,
rigid_body_external_moment_type, and supporting
options to enable specification of external forces on rigid
bodies using user functions and curve fits.
MESH_MOTION
Added pressure to the list of available
curve_fit_variables.
VISCOSITY_MODEL
NODAL_INITIAL_CONDITION
Added type, selection_type, precedence, and supporting
options to enable the definition of initial conditions based on
user defined functions and curve fits. Note that initial
condition commands can now be applied to a node subset in
the model and any number of NODAL_INITIAL_CONDITION
commands can be present for a single variable.
VOLUME_SET
Newly created command that is used to read in a collection
of volume elements. The volume set is then referenced
from other commands within the input file to provide
support for mixed topology volumes.
ELEMENT_SET
ELEMENT_OUTPUT
Added the volume_set parameter to enable definition of
mixed element topologies within a single element set.
Added volume_set and type parameters to enable definition
of element output on mixed topology element sets.
SURFACE_SET
Newly created command that is used to read in a collection
of surface elements. The surface set is then referenced
from other commands within the input file to provide
support for mixed topology surfaces.
FAN_COMPONENT
Added surface_sets to enable definition of mixed surface
element topologies within a single FAN_COMPONENT
command.
HyperWorks Desktop 14.0 Release Notes
246
Proprietary Information of Altair Engineering
HEAT_EXCHANGER_COMPONENT
Added surface_sets to enable definition of mixed surface
element topologies within a single
HEAT_EXCHANGER_COMPONENT command.
HEAT_EXCHANGER_COMPONENT
Added coolant_temperature and
coolant_temperature_multiplier_function to support
type=constant_coolant_temperature.
ELEMENT_BOUNDARY_CONDITION
Added surface_sets to enable definition of mixed surface
element topologies within a single
ELEMENT_BOUNDARY_CONDITION command.
SURFACE_INTEGRATED_CONDITION
Added surface_sets to enable definition of mixed surface
element topologies within a single
SURFACE_INTEGRATED_CONDITION command.
Added surface_sets to enable definition of mixed surface
element topologies within a single FREE_SURFACE command.
FREE_SURFACE
TURBULENCE_WALL
Added surface_sets to enable definition of mixed surface
element topologies within a single TURBULENCE_WALL
command.
PARTICLE_SURFACE
Added surface_sets to enable definition of mixed surface
element topologies within a single PARTICLE_SURFACE
command.
RADIATION_SURFACE
Added surface_sets to enable definition of mixed surface
element topologies within a single RADIATION_SURFACE
command.
SOLAR_RADIATION_SURFACE
Added surface_sets to enable definition of mixed surface
element topologies within a single
SOLAR_RADIATION_SURFACE command.
INTERFACE_SURFACE
Added surface_sets to enable definition of mixed surface
element topologies within a single INTERFACE_SURFACE
command.
GUIDE_SURFACE
Added surface_sets to enable definition of mixed surface
element topologies within a single GUIDE_SURFACE
command.
INTERPOLATED_MOTION_SURFACE
Added surface_sets to enable definition of mixed surface
element topologies within a single
INTERPOLATED_MOTION_SURFACE command.
HyperWorks Desktop 14.0 Release Notes
247
Proprietary Information of Altair Engineering
EXTERNAL_CODE_SURFACE
Added surface_sets to enable definition of mixed surface
element topologies within a single EXTERNAL_CODE_SURFACE
command.
SIMPLE_BOUNDARY_CONDITION
Added surface_sets to enable definition of mixed surface
element topologies within a single
SIMPLE_BOUNDARY_CONDITION command.
SIMPLE_BOUNDARY_CONDITION
Added temperature_coupling_type to allow specification of
the method used to couple the thermal fields between
AcuSolve and an external code.
Added surface_sets to enable definition of mixed surface
element topologies within a single SURFACE_OUTPUT
command.
SURFACE_OUTPUT
MESH_BOUNDARY_CONDITION
Newly created command that is used to define the mesh
motion constraints on a given surface. This command
houses the collection of mesh motion boundary conditions
from the SIMPLE_BOUNDARY_CONDITION, FREE_SURFACE, and
EXTERNAL_CODE_SURFACE commands.
Summary of Deprecated AcuSolve Input File Commands
The following table summarizes the AcuSolve input file commands that are deprecated in this
release. Support will continue for legacy input files, but users should migrate their modeling process
to leverage the new commands when possible.
AcuSolve Command Name
Comments
FREE_SURFACE
Deprecated by the MESH_BOUNDARY_CONDITION command
EXTERNAL_CODE_SURFACE
Deprecated by the MESH_BOUNDARY_CONDITION command
Summary of New/Changed AcuSolve Command Line Options
The following table summarizes the changed or newly introduced AcuSolve command line
arguments. Note that a full description of each option is available in the AcuSolve Programs
Reference Manual.
HyperWorks Desktop 14.0 Release Notes
248
Proprietary Information of Altair Engineering
Program
Option
AcuRun
-install_smpd
AcuRun
-translate_output_to
AcuRun
AcuRunTrace
AcuRunFwh
AcuRun
AcuRun
AcuRunTaceAc
uRunFwh
AcuRun
AcuRunTrace
AcuRunFwh
AcuRun
AcuRunTrace
AcuRunFwh
Added support for the installation of
message passing daemon service for
Platform MPI. This is needed only when
using distributed memory parallel
operation across multiple Windows hosts.
Added an option of h3d as a supported
output format at the conclusion of the
run.
-message_passing_type
Removed mvapich, octigabay, and cray
mpi support.
-view_message_passing_type
Removed mvapich, octigabay, and cray
mpi support.
-mpirun_options
New option that allows passing of options
directly to the mpirun/mpiexec
command.
-automount_path_remove
Changed default setting to _none.
-automount_path_name
Changed default setting to _none.
AcuSolve
-projection_eigenvalue_type
AcuSolve
-linear_solver_error_output
AcuSolve
Description
-mqm_reference_push_factor
New option that provides control over
algorithm used to compute eigenvalues in
the linear solver.
New option that provides control over
whether debug information should be
output when an error is encountered in
the linear solver.
New option that provides control over
whether the reference coordinates or the
current coordinates should be used when
computing the mesh quality metric for
moving mesh simulations that use ALE.
HyperWorks Desktop 14.0 Release Notes
249
Proprietary Information of Altair Engineering
AcuSolve
-num_mmi_smoothing_passes
New option that provides control over the
number of smoothing passes used for
interpolated mesh motion constraints.
AcuSurf
-coordinates_file,
-connectivity_file_list,
-surface_file_list,
-surface_node_file_list
Added ability to read binary format for all
mesh files.
AcuMesh2Tet
-coordinates_file,
-connectivity_file_list,
-surface_file_list,
-periodic_bc_file_list
Added ability to read binary format for all
mesh files.
AcuProj
-coordinates_file
AcuPbc
-coordinates_file,
-nodal_bc_1_file,
-nodal_bc_2_file
Added ability to read binary format for all
mesh files.
AcuPev
-coordinates_file,
-node_file_list,
-surface_file_list
Added ability to read binary format for all
fluid mesh files.
AcuSurf
-coordinates_file,
-connectivity_file_list,
-surface_file_list,
-surface_node_file_list
Added ability to read binary format for all
mesh files.
Added ability to read binary format
coordinates files.
New option that enables specification of
which point moments are computed
about for surface outputs.
AcuTrans
-moment_center
AcuTrans
-moment_center_mesh_motion
AcuTrans
-flexible_body_output
AcuTrans
-flexible_body_output_vars
New option that controls the variables to
export for the FLEXIBLE_BODY.
AcuTrans
-flexible_body_output_sets
New option that controls the
FLEXIBLE_BODY output sets to convert.
AcuRunTrace
-file_format
New option that enables specification of a
mesh motion to use when computing
moments about a given location.
New option that controls the export of
FLEXIBLE_BODY results.
New option that controls the internal file
format.
HyperWorks Desktop 14.0 Release Notes
250
Proprietary Information of Altair Engineering
AcuTherm
-num_temperature_filter_passes New option controlling the number of
filter passes on the temperature.
-
AcuTherm
num_reference_temperature_filte New option controlling the number of
filter passes on the reference
r_passes
temperature.
AcuTherm
-num_film_filter_passes
AcuTherm
-num_heat_filter_passes
AcuTherm
-film_calculation_type
AcuTherm
-limit_reference_temperature
New option controlling the number of
filter passes on the film coefficient.
New option controlling the number of
filter passes on the heat flux.
New option controlling the type of
calculation to use for computing the
reference temperatures and heat transfer
coefficients.
New option controlling whether the
reference temperature should be limited
to the peak nodal temperature in the
model.
HyperWorks Desktop 14.0 Release Notes
251
Proprietary Information of Altair Engineering
Multibody Solutions 14.0 Release Notes
The Altair multibody solution, MotionSolve, consists of the following capabilities:
•
MotionView – the modeling environment
•
MotionSolve – the solver
•
Automotive Solutions – for suspension design, vehicle dynamics, ride comfort and durability
•
HyperGraph/HyperView – the post-processing environment
The 14.0 release of MotionSolve contains three major capabilities that span the breadth of the
multibody solution – modeling, simulation and post-processing.
•
3D Contact
•
Nonlinear Finite Elements (NLFE) - Experimental
•
Advanced Driver and Road for vehicle simulation
These are explained separately so you can understand the full range of the functionality. Other
important, but relatively smaller features are binned by product.
3D Contact
Nonlinear Finite Elements
Advanced Driver and Road Vehicle Simulation
HyperWorks Desktop 14.0 Release Notes
252
Proprietary Information of Altair Engineering
3D Contact
The 3D Contact capabilities in MotionSolve have been completely revamped. Pre-processing,
Simulation, Post-Processing and Documentation have been significantly upgraded. The tables below
summarize the key benefits you will obtain by using the new contact capabilities and how they have
been implemented.
Pre-processing
CAD Geometry can now be Imported Easily and Reliably to Provide the Geometry for 3D
Contact
New meshing options are now available when importing CAD geometry. These enable you to control
the mesh density in a very intuitive way.
Accurate contact force generation requires uniform meshes. New algorithms, more suited for
uniform mesh generation are now used. This new meshing option is only enabled for input
geometries and not for FE models.
Contact Models are Defined with Minimum of User Input
The Properties tab in the Contact panel has been reorganized to have sub-tabs for normal force and
friction force.
HyperWorks Desktop 14.0 Release Notes
253
Proprietary Information of Altair Engineering
Reasonable contact and friction parameters are provided as defaults. You do not have to change
these unless your contacts have special properties.
Parameters are checked for validity as they are entered and the user is alerted to invalid values
before the model is run.
Output Requests to measure contact forces are automatically created.
Extensive Geometry Checks are Performed Automatically to Avoid Potential Failures in the
Solver
All contact meshes examined and invalid or “dirty” geometry is clearly identified during modeling.
Contact surfaces for all meshes can be visualized using “Highlight contact side” option in the
Connectivity tab.
Surface normals can be inverted with just one operation. This is especially useful when contact is
happening inside a selected closed geometry.
Red indicates outward normals and blue indicates the inward normals.
HyperWorks Desktop 14.0 Release Notes
254
Proprietary Information of Altair Engineering
The normals for a mesh are automatically corrected when inconsistencies are detected. This is
especially useful when tria-meshes are imported from STL files or Wavefront OBJ files.
Open edges and T connections, if any, can be highlighted as shown in the figure on the top right. If
the mesh is clean (i.e. it forms a closed volume), the panel indicates “No mesh errors” else the
“Highlight mesh errors” option becomes available.
Mesh Cleaning and Healing Tools
MotionView now includes a new mesh manipulation tool that allows you to clean previously unusable
meshes for contact solution. The capability is accessed from the Import CAD or FE utility.
Import CAD or FE utility now provides additional cleaning options that enable you to fill holes,
thicken surfaces, eliminate T-junctions and shrink-wrap unusable meshes. All of this is done with a
minimum of user input.
New Contact Models are Supported
A new Volume Model for normal force calculations is now supported. User defined contact models for
both normal and friction forces are also supported.
In addition, user-defined normal and friction force definitions are supported.
HyperWorks Desktop 14.0 Release Notes
255
Proprietary Information of Altair Engineering
Updated Contact Properties Editor Macro
This macro tool has been updated to take into account the new contact properties available in the
solver and makes setting properties across multiple contacts quick and intuitive.
Contacts are Visualized During Modeling
A new “implicit graphics” contact icon is now visible. You can visually see the geometries that have
contact connections.
HyperWorks Desktop 14.0 Release Notes
256
Proprietary Information of Altair Engineering
Associated graphics are highlighted when contact entity is selected.
Precise Contact Detection is Supported
Advanced options are available to detect the precise event when contact occurs. An option is also
available to change the maximum step size subsequent to contact detection. This option introduces
a Sensor entity with a zero crossing attribute into the MotionSolve XML file. This Sensor will control
integration step size so that the onset of contact is accurately detected.
Refer to Rigid to Rigid Contact section in MotionView User Guide to learn more about modeling
contacts.
Solution
Improved Robustness of Mesh-to-Mesh Contact
A new collision engine that vastly improves the robustness of mesh-mesh contact has been
implemented.
Contact Simulations are Much Faster Now
There are two main reasons for fast contact simulations:
•
Parallel solution for all contacts
•
Specialized contact algorithms for simpler shapes
Parallel solution for all contacts
HyperWorks Desktop 14.0 Release Notes
257
Proprietary Information of Altair Engineering
The contact kinematics between each pair of geometries is calculated in parallel in different threads.
This means whenever there are multiple contacts in your model you can improve simulation time by
using multiple cores in a machine. All contact pairs will be dynamically distributed onto the available
cores.
The graph below shows how contact simulations speed up as a function of the number of threads
used to solve for contact.
Specialized contact algorithms for simpler shapes
A much faster, specialized sphere-to-mesh contact algorithm is now available.
A much faster, specialized sphere-to-sphere contact algorithm is now available.
Both of these are automatically invoked when needed.
HyperWorks Desktop 14.0 Release Notes
258
Proprietary Information of Altair Engineering
Large Initial Penetration Leading to Unrealistic System Behavior is Avoided
A zero crossing sensor that monitors the distance between contacting geometries is now available.
The zero crossing sensor controls integrator step-size to precisely capture the contact event.
Note: This sensor is only meaningful for impulsive contacts. If a contact is persistent, then a zero
crossing sensor is not needed.
Contact Parameters have a Physical Basis and can be Easily Defined
A new “Volume” force model that relies on understandable physical parameters such as bulk
modulus and shear modulus is now available.
The normal force is based on an Elastic foundation model. The rigid bodies in contact are assumed
to be covered by thin elastic layers. If the tangential shear stress in the layer is ignored, a direct
relationship can be found between the normal pressure and normal displacement. This relationship
can be used to generate the force between two contacting layers. This model is well known in the
literature for contacts.
HyperWorks Desktop 14.0 Release Notes
259
Proprietary Information of Altair Engineering
Contact Outputs are Provided Even Though They Might Happen at “Irregular” Times
An option to output the system state at the maximum penetration depth in-between two regular
output steps is now available. When you run a simulation from MotionView, this is done
automatically. You can filter out these “extra” outputs in HyperView.
Detailed Contact Behavior can be Exported from the Solver as Requests
The CONTACT () function has been enhanced to provide many more details about the contact such
as maximum penetration depth, number of contact patches, total number of contacts, area of
contact, etc.
Key Contact Metrics are now Available. You no Longer have to Compute Them!
Contact metrics tables are now printed in the MotionSolve log file. You can examine the metrics
table to determine what the maximum penetration(s) and normal force(s) is/are in your model and
when it occurred. Two tables are printed – one ordered by maximum penetration depth and another
ordered by maximum contact force:
A contact report containing this table is also available in MotionView.
HyperWorks Desktop 14.0 Release Notes
260
Proprietary Information of Altair Engineering
Post-processing
Contact Behavior can be Examined in Detail in HyperView. You can Understand how the
Contacts are Behaving During the Simulation.
New vector plots are now available for visualizing normal force, friction force, penetration depth, and
penetration velocity.
The coefficient of friction in the contact patches can now be visualized as a contour plot.
Contact forces by region can now be visualized.
The Range of Contact Occurrence on Geometry Across an Entire Simulation can now be
Visualized
A new contact summary frame is now available in HyperView. This summary frame will show you
where contact has occurred during a simulation with a contour of the maximum penetration depth
for all contact occurrences through the entire length of the simulation.
HyperWorks Desktop 14.0 Release Notes
261
Proprietary Information of Altair Engineering
Contact Report for Easy Post Processing
MotionView now has capability to generate a Contact Report automatically to simplify the post
processing of contacts.
For every model that involves contacts, the auto-generated report contains the necessary plots and
animations that enable you to easily understand contact behavior in your model.
•
A ‘Contact Overview’ is first generated so you can see where the contact has occurred in
the model.
•
Two animations of the model, one showing penetration depth and the second showing
normal contact force are available for review
•
Finally, the report also contains ‘Overall Contact Force vs. Time’ plot for every contact in
the model.
HyperWorks Desktop 14.0 Release Notes
262
Proprietary Information of Altair Engineering
Detailed Contact Information can now be Plotted
New options have been added to the contact function. This enables you to create requests
containing contact details that can be easily plotted.
Change in Behavior
The new mesh-to-mesh contact algorithm requires Graphics that have a well-defined volume. Open
meshes, i.e., meshes that do not have a volume, are not allowed. MotionView will detect open meshes
and flag these as errors. You must fix such Graphics before using these for contact. For more
information, refer to the Best practices for running 3D contact models in MotionSolve.
The new mesh-to-mesh contact algorithm is capable of handling very large meshes quite efficiently. In
the past you had to take care to mesh only the regions in contact with a fine mesh. This is no longer
required. A fine mesh that is not in contact, does not add much overhead to the calculations.
HyperWorks Desktop 14.0 Release Notes
263
Proprietary Information of Altair Engineering
Nonlinear Finite Elements
MotionSolve 14.0 introduces the “NLFE Body” which allows you to model non-linearly flexible
components in your multi-body system. This is an experimental feature in the current version. The
NLFE Body is based on the Absolute Nodal Coordinate Formulation (ANCF). Nonlinearity can occur for
two main reasons: (A) Geometric nonlinearity and (B) Material non-linearity. The NLFE body supports
both.
A non-linear modeling component is typically required in the following scenarios:
•
A large deformation is expected in the flexible component, or an unusually large deformation
is observed in the flexible component
•
Stresses in your flexible components approach yield point of the material
•
The flexible component is composed of non-linear hyper elastic materials like rubber or
polyurethane. The material exhibits a nonlinear stress vs. strain behavior or is hyper-elastic
•
A linearly flexible modelling component does not provide the fidelity that is desired
Please note that the deformation is still assumed to be in the elastic region. Plastic
deformations are not supported in this release.
Pre-processing
MotionView has new capabilities for modeling NLFE systems. A generic NLFE Body can be created using
either the CABLE or BEAM element.
CABLE
The CABLE element does not resist shear or torsion forces. This implies that the cross section of this
element does not change as the entity deforms.
This element can be used to model cables, wires, ropes, etc. Only the Linear Elastic material model
is supported.
BEAM
The BEAM element resists all forms of deformation, which implies that the cross section can also
deform with load. This can be visualized in HyperView while using this element.
Multiple cross sections are supported for the BEAM element:
•
Circular (solid and hollow)
•
Rectangular or Box (solid and hollow)
•
Channel
•
Cross
HyperWorks Desktop 14.0 Release Notes
264
Proprietary Information of Altair Engineering
•
Hat
•
H, I, L, T and Z sections
This element can be used to model beams, springs, belts, rubber components etc. You may choose
from either a Linear-Elastic or a Hyper-Elastic material.
Three Hyper Elastic materials are supported – Neo-Hookean Compressible, Mooney-Rivlin and Yeoh
models. MotionView provides a set of recommended values for the model parameters. You may
however, create new materials and enter your own parameters.
3D Visualization
MotionView provides 3D visualization of the NLFE body based on the profile and cross section
properties.
Defining Preloaded/Relaxed Configurations
An NLFE body can now have a pre-loaded position in addition to the model position. The user can
import these in a CSV format. Upon import, the model position will be shown in wireframe mode and
the loaded position in solid.
Saving Pre-load Configurations
With a combination Save command in MotionSolve and a Python script, it is now possible to save the
configuration of the NLFE at the end of simulation into a CSV file. This csv file can be read into MV
as preloaded configuration. An option is also available to visualize the unloaded and pre-loaded
profile together.
NLFE Subsystems
In addition to the generic Cable and Beam modeling elements, MotionView also supports a small set
of NLFE subsystems that are specific to the Auto industry. These subsystems may be accessed from
the vertical toolbar to the left of the graphics window. The following subsystems are supported.
Stabilizer bar
HyperWorks Desktop 14.0 Release Notes
265
Proprietary Information of Altair Engineering
Coil spring
HyperWorks Desktop 14.0 Release Notes
266
Proprietary Information of Altair Engineering
Refer to NLFE Subsystems to learn more about using these subsystems in your model.
These subsystems are provided as examples to you to demonstrate how the built-in capabilities of
MotionView may be used to create parametric subsystems that can contain NLFE elements. You
can build your own subsystems in a similar manner. Source code for the built-in NLFE subsystems
will be provided in the installation.
MotionSolve supports a much larger set of NLFE modeling elements. You can use these in a
MotionView model by using a Templex template. Native MotionView support is not available at this
time.
Solution
NLFE subsystems are included in MotionSolve as a flexible body that is specified through an ANCF XML
file. The MotionSolve XML file fragment below illustrates this.
<Body_Flexible
id
= "30102"
label
= "NLFE Body 0"
full_label
= "Model-NLFE Body 0"
ref_marker_id
= "30101010"
ancf_file
= "simo-spinning-beam4_30102.xml"
rayleigh_damping
= "0.5"
num_i_marker
= "3">
30102021 30102101 30102102
</Body_Flexible>
The NLFE subsystem can consist of any combination of atomic MotionSolve NLFE elements. For the
example shown above, the NLFE subsystem is specified in the file simo-spinning-beam4_30102.xml.
The contents of this file are shown below.
HyperWorks Desktop 14.0 Release Notes
267
Proprietary Information of Altair Engineering
MotionSolve supports a comprehensive set of NLFE modeling elements. The table below summarizes
the current implemented atomic NLFE entities in MotionSolve. Note, that MotionView supports only
a small subset of these. You can use these in a MotionView model by using a Templex
template.
Element Type
Supported Element Set
Line Elements
BEAM9
(Gradient Deficient ANCF Beam Element)
BEAMC
(Beam Element with Circular Cross Section)
BEAM12
(Fully Parameterized ANCF Beam)
CABLE
(Cable Element)
QUAD12
(Rectangular Thick Plate Element)
QUAD9
(Rectangular Thin Plate Element)
TRIA12
(Triangular Thick Plate Element)
TRIA9
(Triangular Thin Plate Element)
Surface Elements
HyperWorks Desktop 14.0 Release Notes
268
Proprietary Information of Altair Engineering
Element Type
Supported Element Set
Solid Elements
HEXA12
(C1 Brick Solid Element)
HEXA3
(C0 Brick Solid Element)
PENTA12
(C1 Penta Solid Element)
PENTA3
(C0 Penta Solid Element)
TETRA12
(C1 Tetra Solid Element)
TETRA3
(C0 Tetra Solid Element)
ABUSH
(Bushing Element)
LINE2
(Two nodes line spring element)
LINE3
(Three nodes line spring element)
LINE4
(Four nodes line spring element)
CONGM
(Concentrated mass element connection)
CONPM
(Concentrated point mass)
CONN0
(Connector element)
CONN1
(Connector element)
CONN2
(Connector element)
CONN3
(Connector element)
Scalar and Bushing
Elements
Mass Elements
Connector Elements
Linear Elastic Material MAT1
Models
(Continuum Mechanics Approach )
MAT1LS
(Linear Strain Material Model)
MAT6
(Elastic Line Approach)
Hyper-Elastic Material MAT2
Models
(Incompressible Neo-Hookean Material Model)
HyperWorks Desktop 14.0 Release Notes
269
Proprietary Information of Altair Engineering
Element Type
Anisotropic
Model
MAT3
(Compressible Neo-Hookean Material Model)
MAT4
(Mooney-Rivlin material model)
Material MAT7
Geometric Properties
Other Inputs
Supported Element Set
(Thin Plate Element Anisotropic Material Model)
MAT7ORT
(Thin Plate Element Orthotropic Material Model)
MAT9
(Anisotropic Material Model)
MAT9ORT
(Orthotropic Material Model)
MAT9TRA
(Transverse Isotropic Material Model)
PABUSH
(Bushing element properties)
PBEAM9
(Arbitrary Cross Section Beam element properties)
PBEAMA
(Arbitrary Cross Section Beam element properties)
PBEAMC
(Circular beam element properties)
PBEAML
(Property card of the ANCF beam elements)
PCABLE
(Cable element properties)
PLINE
(Line spring property)
PSHELL
(Plate elements properties)
PSOLID
(Solid elements properties)
GRID
UNITS
For more information about these elements, refer to the NLFE Reference Manual.
HyperWorks Desktop 14.0 Release Notes
270
Proprietary Information of Altair Engineering
Post-processing
Beam and Cable Elements can be Visualized in a 3D Form
The result H3D contains the NLFE elements in 3D form which can be visualized in HyperView.
NLFE Body can be Post-Processed in Similar Way as any Finite Element Model
Displacement, stress and strain contours can be visualized on the NLFE body. Other operations such
as section cuts can also be applied.
HyperWorks Desktop 14.0 Release Notes
271
Proprietary Information of Altair Engineering
CMS Flexible Body vs. NLFE Body: Pre-Processing Comparison
The NLFE Body and a CMS Flexible Body provide somewhat similar capabilities. There are, however,
key differences in how the entities are defined, used and in the limitations they have. Key differences
between the two are compared in the tables below.
Task
Creating
flexible bodies
Modeling
flexibility in
components
CMS flexible body
NLFE body
User meshing is required to represent the
component.
No user meshing required for creating
NLFE sub-systems in MotionView.
An additional CMS analysis is required to
generate a modal representation of the
flexible component.
No analysis required to create an NLFE
body. The NLFE Body can be created and
modified directly in MotionView.
Line, shell and solid elements are
supported.
This release introduces support for line
elements only.
Connect to joints, forces etc. by defining
interface nodes in CMS analysis.
All nodes can be used as interface nodes –
no special handling is required.
Only accurate in a linear deformation
range, i.e. for small deformations;
Fully non-linear formulation allows
accurate solution for small and large
deformations without any reduction
analysis
Must capture enough modal information to
represent physical deformation accurately
CMS Flexible Body vs. NLFE Body: Solution Comparison
The solution characteristics of an NLFE Body are compared to the CMS flexible body in the following
table.
Task
Modeling
flexibility in
components
Modeling
geometric
non-linearity
in flexible
components
CMS flexible body
NLFE body
Only accurate up to a linear deformation
range, i.e. for small deformations.
Fully non-linear formulation allows
accurate solution for small and large
deformations without any reduction
analysis.
Must capture enough modal information to
represent physical deformation accurately.
Cannot handle large deformations in
general.
The BEAM and CABLE element allow you to
model large deformations in your flexible
components.
HyperWorks Desktop 14.0 Release Notes
272
Proprietary Information of Altair Engineering
Task
CMS flexible body
NLFE body
Modeling
material nonlinearity in
flexible
components
Does not support non-linear material
models.
You can model your flexible components
with hyper elastic as well as linear elastic
materials.
CMS Flexible Body vs. NLFE Body: Post-Processing Comparison
Recover
stresses and
strains
CMS flexible body
NLFE body
Yes
Yes. MotionSolve writes out a 3D
representation of the Beam and Cable
elements to enable stress, strain and
displacement visualizations in HyperView.
HyperWorks Desktop 14.0 Release Notes
273
Proprietary Information of Altair Engineering
Advanced Driver and Road Vehicle Simulation
Driver
The Altair Driver is a set of MotionView models and libraries that drives virtual vehicles with closed loop
and open loop inputs to perform a variety of events. Examples include driving on a rough, curving
road while controlling speed for durability or ride comfort analysis, or driving a skid pad at increasing
speed to predict understeer.
This is achieved by controlling the five vehicle inputs Steering, Throttle, Gear, Brake and Clutch so that
the vehicle is able to accomplish the required maneuvers. The driver is completely integrated into
MDLLIB. You can build a full vehicle for use with the Advanced Driver using MotionView’s Assembly
Wizard. You do this by selecting the Full vehicle with advanced driver option, as shown in the
dialog below.
Once a vehicle + driver is built, the next step is to define what the combined system should do. You
specify driver events to do this. In this release, the input to the driver model is an “Advanced Driver
File”. This is an ASCII TeimOrbit format file that scripts a simulation as a sequence of maneuvers. The
Altair Driver and the Advanced Driver File support both open and closed loop events.
With Altair Driver File you can define any number of full vehicle events for the driver to execute.
•
A complex simulation may be decomposed into many simpler “atomic maneuvers
•
For each maneuver
− You can select the controllers for vehicle inputs
− You can define termination conditions for each maneuver.
•
You can define open loop, closed-loop or user-defined controllers to control:
− Longitudinal speed or acceleration.
− Vehicle path or lateral acceleration.
•
Switching controllers during a simulation
HyperWorks Desktop 14.0 Release Notes
274
Proprietary Information of Altair Engineering
•
Defining path and speed profiles parametrically, in a table, or by referencing a data file.
The overall relationship between the Altair Driver and the vehicle is shown in the figure below.
Full vehicle models built for use with the Advanced Driver include the following new systems:
•
A four-wheel disc brake system for slowing the vehicle
•
Either a linear torque map power train or an IC engine with clutch and manual gearbox for
accelerating the vehicle.
Once the full vehicle is assembled use the task wizard from the Analysis menu to add an Advanced
Driver Analysis as shown below.
Road
Use the Road Graphics Tools to build a MotionView graphic system to visualize the road or to extract a
driver path from Curved Regular Grid (.crg), Regular Grid (.rgr) and 3D Spline Road files. Using the
Road Graphics Tool you can resample the road to reduce or increase the number points in the driver
path or the number of surfaces in the resulting graphics. You can also add lane divider lines and
shoulders to the road, and set the colors of the road, the lane divider lines, and shoulders.
The road graphic system the tool creates is automatically imported into your model, but also saved to
disk so you import it in any MotionView model.
HyperWorks Desktop 14.0 Release Notes
275
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
276
Proprietary Information of Altair Engineering
Other MotionSolve Enhancements
New Python Based Lexicon
A new Python based lexicon for MotionSolve is provided in this release. Using this lexicon, one can
now create Python applications that can:
•
Create a MotionSolve model
•
Execute the model
•
Use any other Python utilities that are useful in this context.
For instance, you could: Perform a MotionSolve simulation and display live plots during the
simulation with Matplotlib (a Python based plotting tool).
Along with the Python based lexicon, a new Python lexicon Reference Manual is also available.
Supported Entities
ACCGRAV
ACTIVATE
ARRAY
BEAM
BEGIN
BUSHING
CONTACT
CONTROL
COUPLER
CURVE
CVCV
CVSF
DEACTIVATE
DEBUG
DIFF
DV
END
EQUILIBRIUM
FIELD
FLEX_BODY
FRICTION
GCON
GEAR
GFORCE
GRAPHICS
GSE
H3DOUTPUT
INTEGRATOR
JOINT
JPRIM
LSE
MARKER
MATE
MATRIX
MOTION
NFORCE
OUTPUT
PART
PFORCE
PINPUT
POINT_MASS
POUTPUT
PTCV
PTSF
RELOAD
REQUEST
RV
SAVE
SENSOR
SFORCE
SFSF
SIMULATE
SPLINE
SPRINGDAMPER
STOP
STRING
SURFACE
TFSISO
TRANSIENT
UCON
UNITS
VARIABLE
VFORCE
VTORQUE
Support for Multi-Iterative Coupling (MIC) in Co-Simulation with AcuSolve
With this release, MotionSolve supports multi-iterative coupling (MIC) while co-simulating with
AcuSolve. This enhancement allows MotionSolve to re-compute its system states on the fly when
needed during co-simulation. This is helpful while trying to solve “tightly” coupled problems more
accurately. With this enhancement, your co-simulation results are more accurate and the cosimulation is more robust.
HyperWorks Desktop 14.0 Release Notes
277
Proprietary Information of Altair Engineering
MS_USERDLL_DIR Supports Python Scripts
You can use the MS_USERDLL_DIR environment variable to specify the location of your Python
scripts (*.py, *.pyc) as well as your C++/FORTRAN user subroutines.
The environment variable MS_USERDLL_DIR can be set to a list of folder locations on your machine
(separated by ;) where you want MotionSolve to search for your user subroutines (*.dll, *.so).
This scenario is common when you don’t specify the absolute path of the user subroutine in your
model or if the user subroutine is not in the same location as the solver input XML file.
Geometric Stiffening for CMS Flexible Bodies
You can model geometric stiffening for CMS flexible bodies in MotionSolve. Geometric or stress
stiffening is an effect most commonly seen in beams under tension where the frequency of the
fundamental modes increases as the tension is increased. Such an effect can be observed in rotating
beam structures like helicopter or wind turbine rotor-blades.
Include the stress stiffness data in your CMS flexible body by including the following in your FEM file:
CMSMETH, 1, CBG, , 15
CBG is the keyword that instructs OptiStruct to create the CMS flexible body with additional geometric
stiffness data.
You can then import this flexible body in your MotionView model as you would ordinarily. Note: Only
the Craig-Brampton method is currently supported for calculating the geometric stiffness data.
This new MotionSolve capability is completely supported in MotionView also.
Flex-body Generation with Geometric Stiffness can be Done using the Flexprep Tool
A GUI option is available to specify geometric stiffness.
Selecting the highlighted option would include the relevant CMSMETH statement of the form
CMSMETH, 1, CBG, , 15 into the FEM File.
HyperWorks Desktop 14.0 Release Notes
278
Proprietary Information of Altair Engineering
Geometric Stiffness Option can be Specified in the Body (Flex body) Panel
“Include geometric stiffening” checkbox is now available in the Flex-body panel. This option will only
be activated when the flex h3d contains the geometric stiff (GEOSTIFF) data that is saved while
generating the flexible body during the CMS process.
Checking on this option will enable export of the geometric stiffness data into MotionSolve XML file.
Geometric Stiffness Data can be Selectively Chosen by Mode for Export to MotionSolve
The “Modes” dialog in the flex-body panel now contains an additional column to control export of
geometric stiffness data for each mode.
Turning off geometric stiffness data for certain modes can significantly improve the solution time.
However, you should be sure that the modes that are turned off have a minor influence on
geometric stiffening effects.
Linking with msautoutils via the User Subroutine Build Tool
The user subroutine build tool shipped with this release of MotionSolve now links with the
msautoutils library on both Windows and Linux. You can now use access functions exported by the
MotionAuto Utilities as well as the MotionSolve UserSub API. This substantially simplifies the effort
HyperWorks Desktop 14.0 Release Notes
279
Proprietary Information of Altair Engineering
on your part to create your own road or other Auto functionality based on the published set of
capabilities.
Updated ISTAT Codes for the GTCMAT Utility Subroutine
The ISTAT return codes for the GTCMAT utility have been updated in MotionSolve.
ISTAT= 0
Normal return.
Compliance matrix was calculated.
ISTAT= -1
Error return.
NM < 0.
ISTAT= -2
Error return.
NM > 100.
ISTAT= -3
Error return.
NC < 6*NM.
ISTAT= -6
Error return.
MKID refers to a non-existent REFERENCE_MARKER.
ISTAT= -7
Error return.
The system has zero degrees of freedom.
ISTAT= -9
Error return.
calculations.
A singular Jacobian matrix was encountered during the
ISTAT=-11
Error return.
A REFERENCE_MARKER is on GROUND. It cannot move.
ISTAT=-12
Error return.
An initial static equilibrium was not performed.
ISTAT=-99999
Error return.
Linear Analysis Enhancements
Many enhancements have been added to Linear Analysis. These include:
•
A new option for “balancing” prior to eigenvalue analysis
•
Support for strain/dissipative energy calculations
•
Mode selection for linear analysis output
The updated statement is shown below with the 14.0 enhancements in red.
HyperWorks Desktop 14.0 Release Notes
280
Proprietary Information of Altair Engineering
A new capability for “balancing” prior to eigenvalue analysis
For certain models, the eigenvalues calculated are sensitive to very minor changes in the state
matrix used as input for the solution. This occurs when the eigenvector matrix is ill conditioned.
MotionSolve detects an ill conditioned eigenvector matrix and “balances” the state matrix for a more
robust eigenvalue solution.
Balancing refers to diagonally scaling the state matrix such that the row and column norms are
numerically close to each other. You can control this behavior using the attribute “balancing” in the
<Param_Linear> model or command statement.
Set “balancing” to “TRUE” to force MotionSolve to perform balancing on the state matrix and
“FALSE” to disable balancing. The default for “balancing” is “AUTO” which lets the solver decide
when balancing is required based on the condition number of the eigenvector matrix. Please note,
that balancing is a very inexpensive operation.
Support for strain/dissipative energy calculations
For linear analyses, in addition to Kinetic Energy distribution, MotionSolve also calculates strain and
dissipative energy for the following modeling elements:
•
Force_SpringDamper (TSPDP/RSPDP)
•
Force_Bushing (BUSH)
HyperWorks Desktop 14.0 Release Notes
281
Proprietary Information of Altair Engineering
•
Force_Beam (BEAM)
•
Force_Field (FIELD)
•
Force_VectorOneBody/Force_VectorTwoBody (VFORCE, VTORQUE, GFORCE)
•
Force_Scalar_TwoBody (SFORCE)
The KE, strain and dissipative energy distribution is written to the log file, on the screen and the
*_linz.mrf output file. To request MotionSolve to calculate these distributions, set the
write_energy_dist attribute to “TRUE” in the <Param_Linear> model or command statement.
Mode selection for linear analysis output
You can now specify the modes for which MotionSolve writes the energy distribution on screen and
to the log file. This is useful when the number of eigenmodes is large and you are interested only in
a subset.
You may specify mode numbers to include or exclude, for each of the three distributions. Please see
the documentation on <Param_Linear> for more details on how this is done.
Header Format Change for PLT Output Files
With this release, the header for the PLT output files has been changed to allow the PLT file to be
imported into FEMFAT for fatigue analysis. The old and new PLT format are described below:
Old format: The old format contains 4 columns for each request and the version number is 8.1.
New format: The new format contains 5 columns for each request and the version number is 9.1.
The fifth column is added as per the specifications from FEMFAT. If this value is non-zero, then the
next line is treated as a comment line.
HyperWorks Desktop 14.0 Release Notes
282
Proprietary Information of Altair Engineering
Kinematic Analysis for “Structure” Models
Previously, MotionSolve did not solve models that have 0 DOF and time dependent loading. To solve
such models you needed a workaround with “dummy” differential equations etc. With this release,
MotionSolve has been enhanced to recognize 0 DOF models that have time dependent loading such
that the simulation can continue. Such a scenario is useful when trying to determine joint reaction
forces for models with 0 DOFs.
Compatibility with ADAMS Language
FX Function Compatibility
The definitions of the functions FX, FY, FZ, TX, TY and TZ have been made consistent with what is
used in ADAMS. The table below lists the changes, using the FX function as an example:
Function
Arguments
Behavior
FX (I, J, K)
I, J and K markers
Computes the X component of all the forces acting
between marker I and J resolved in the coordinate system
of marker K.
FX (I, J)
I and J markers
Computes the X component of all the forces acting
between marker I and J resolved in the ground coordinate
system.
I marker
Computes the X component of all the resultant forces at
marker I. To calculate the X component of action-only
forces at the I marker, specify frc_expr_action_only =
“TRUE” in the <ResOutput> command element in the
XML input file.
FX (I)
HyperWorks Desktop 14.0 Release Notes
283
Proprietary Information of Altair Engineering
Graphic Statement Compatibility
MotionSolve now supports the adm statement GRAPHICS/… for displaying force vectors in the
animation H3D. A sample statement is
GRAPHICS/10215001, FORCE, ETYPE=ALL, EM=10215001
The following ETYPE are now supported:
ETYPE
ALL, BEAM, BUSH, FIELD, GFORCE, JOINT, JPRIM, NFORCE, SFORCE, SPDP, VFORCE, VTORQUE
Correct Conversion of Output Steps to XML for Multiple Analyses
Previously, a model that had multiple SAVE/RELOAD statements and analyses with different output
steps was not translated correctly to MotionSolve. An example of such a scenario is shown below:
RELOAD/SYSTEM, FILE=model.case5
SIM/STA, END=5.0, STEP=20
SIM/STA, END=6.0, STEP=5
SIM/STA, END=6.1, STEP=5
SIM/STA, END=6.5, STEP=4
SIM/STA, END=6.9, STEP=4
SIM/STA, END=7.0, STEP=5
This has been resolved within this release.
Resolved Issues
Solver Behavior Updated for Vehicle Models Containing Tires
With this release, the solver behavior for any model that contains tires has been updated to produce
more accurate velocities and accelerations. The solver now recognizes force elements that model the
tire and monitors the rotating wheel bodies so that the velocities and accelerations are computed
more accurately.
For models that make use of the <Force_VectorTwoBody> modeling element to represent tires, you
can expect to see smoother results slip ratio and tire rotational velocity.
Using Python User-Subroutine Scripts on a Different Network Location than MotionSolve
Previously, MotionSolve was unable to access a Python script that was not located on the same
machine as the MotionSolve installation. This issue has been fixed, now, you can run a simulation in
a scenario where MotionSolve in installed on one machine and the scripts are located on another
network location. Note: you need to have read access to the network location where your scripts are
located.
HyperWorks Desktop 14.0 Release Notes
284
Proprietary Information of Altair Engineering
Flexbody Visibility of MotionSolve H3D in HyperView
Previously, if your model consisted of multiple flexible bodies generated using a combination of
PLOTEL and non-PLOTEL elements, the flexible bodies would not be displayed properly in HyperView.
This issue has been fixed within this release.
Resolved Issues in Linear Analysis
Several issues have been fixed for the linear analysis within this release:
•
If you request Simulink or MATLAB output files after a linear analysis, MotionSolve
requires a valid <Control_PlantInput> model element that defines the input and a
<Control_PlantOutput> model element that defines the output for the linearized system.
If these IDs are not specified or specified incorrectly, MotionSolve will issue an error
message and stop the simulation. These IDs can be specified via the pinput_id and
poutput_id attributes in the <Param_Linear> model or command statement. See the
documentation for <Param_Linear> for more details. For some models, MotionSolve
wrote incorrect B and C matrices after a linear analysis when “write_matlabfiles” is set to
TRUE. This was determined to be an issue with numerical tolerance and has been fixed
for this release.
•
For a model that contained only flexible bodies, MotionSolve crashed while writing the
Kinetic Energy distribution. This issue has been fixed within this release.
•
While requesting a linear analysis on a model with no force elements (or zero total force),
MotionSolve crashed during the linear analysis simulation. This was determined to be an
error in the solver code and has been resolved starting with this release.
− When the ADM/ACF deck contained more than one Linear command statements, the
translation to XML resulted in a Param_Linear statement which was not equivalent. This has
been resolved within this release.
Building User Subroutines by Using the GCC Compiler on Linux
In the previous release, you were unable to link your user subroutine code with the MotionSolve
user subroutine API library (ms_usersubapi) using the GCC compiler. Starting with this release, this
restriction has been removed. Now you can use both the GCC and Intel compilers to compile and
link your user subroutine code.
Incorrect Gear Ratio Calculated when Using the Constraint_Gear Modeling Element
Previously, a gear modeled using the <Constraint_Gear> statement resulted in an incorrect gear
ratio calculation in the solver. This has been fixed within this release.
The SENVAL Function Returns an Incorrect Value when the Sensor is not Activated
The SENVAL function should return a value of 0 when the sensor it refers to is not active during the
simulation; this behavior was not seen in the previous release. This has been fixed starting with this
release.
HyperWorks Desktop 14.0 Release Notes
285
Proprietary Information of Altair Engineering
SENSOR Causes a Crash if Deactivated before the First SIMULATE Command
If your model contains a <Sensor_Event> modeling element that is deactivated before the first
<Simulate> command is executed, the simulation would crash with the previous release.
This was determined to be a bug and has been fixed with this release.
Post-Processing Module (MS-Post) Crashes with ‘0’ Specified as a Marker ID
Previously, the post processing module in MotionSolve crashed if your model contained an output
request that referred to a ‘0’ marker ID. This scenario may occur with older MotionSolve models.
This has been fixed such that the post module simply ignores such a marker request.
PROXIMITY Function Referring to a Deactivated Sensor Crashed the Simulation
Previously, if your model contained a PROXIMITY function that referred to a deactivated sensor in
your model, the simulation would crash in such a scenario. This has been fixed such that the use of
such a PROXIMITY function does not halt the simulation. Note: It is important to keep track of which
sensors are deactivated in your model since the PROXIMITY function referring to a deactivated
sensor will return a 0 value.
Rigid Body Contact for Box Graphic Defined with a Negative Length
Previously, if you modeled 3D rigid body contact with at least one body being a box graphic defined
by a negative length, the contact force was not generated as expected. This has been fixed with this
release.
IF Function Doesn’t Return User Defined Value
Previously, if you defined a solver variable using multiple IF statements and queried the solver for
this variable’s value in a Post_Request using VARVAL(..), MotionSolve did not return the exact
values for the variable as defined by the user. Specifically, the values were incorrect at the points
where the gradient of the expression for the solver variable is discontinuous.
This issue can be resolved by specifying dae_interpolation = “FALSE” in the <Param_Transient>
model or command statement in the MotionSolve XML input file.
Missing "XP" and "ZP" of Marker in XML
Markers with direction cosine matrix very close to the identity matrix were not translated correctly
to the MotionSolve XML input file. This was caused by a loose numerical tolerance in MotionSolve.
Sign of Velocity at Discontinuous Operating Point
Previously, for a kinematically constrained model, if you specified a motion on a joint using multiple
IF statements, the velocity of the marker associated with the joint showed a difference if the model
was solved using the VSTIFF or DSTIFF integrator.
HyperWorks Desktop 14.0 Release Notes
286
Proprietary Information of Altair Engineering
This has been fixed within this release – the choice of the integrator does not matter for such a
kinematic model.
Note: Use of the IF function to define motions is not recommended in MotionSolve, since the IF
function tends to produce discontinuities which make it hard for the solver to converge and can
produce erroneous results in certain cases. Please refer to the documentation on Motion_Joint for
more tips on defining smooth motion inputs.
Incorrect Gear Ratio when Using “Constraint_Gear” Model Element
Previously, a gear modeled using the Constraint_Gear statement returned an incorrect gear ratio in
MotionSolve. This has been fixed within this release.
State Variable Doesn't Return User Defined Value Correctly, Especially in Transient
Analysis
Previously, a Motion defined as a saw-tooth function using a series of IF statements returned results
inconsistent with the user input. This has been fixed within this release.
Multiple Simulates with Time Dependent Motion Result in Incorrect Answers
Previously, if your model contained multiple Simulate commands and a Motion_Joint modeling
element was modified in between the analyses, MotionSolve did not update the Motion_Joint value
correctly thus yielding incorrect results or simulation failure. Such a scenario is shown below:
This has been resolved with this release.
HyperWorks Desktop 14.0 Release Notes
287
Proprietary Information of Altair Engineering
Suspension Design Factor (SDF) Outputs Caused Certain Models to Fail During GTCMAT
Calls
Previously, certain models that had SDF outputs defined in them failed the GTCMAT calls. This was
determined to be an issue in the solver code and has been fixed with this release.
Save and Load Issue with Models Containing Joint Friction
Previously, if you save and load your model that contains joint friction modelling elements, the
reloaded model will not solve correctly. This has been identified as an error in writing the model
upon saving.
Known Issues
NLFE
•
The damping parameter for NLFE components is a coefficient for a Rayleigh damping
model. Since this is a numerical damping, it is advised to start from a value of 0 in your
model, since critical damping can be achieved with a small value and a larger value may
yield unrealistic results.
Others
•
When using a custom element definition (including <Force_JointFriction>) that uses
GFORCE with the ground being defined as the I body, the results may be incorrect. As a
workaround, insert a dummy body between the ground and the J body.
HyperWorks Desktop 14.0 Release Notes
288
Proprietary Information of Altair Engineering
Other MotionView Enhancements
This section documents other important enhancements that have been made to MotionView.
Direct Geometry Import
In this release, MotionView introduces new functionalities based on the Parasolid geometry engine. A
new ability to import geometry of type “CADGraphic” is now available. All common formats can be
imported.
You will experience several benefits because of this capability.
•
All common CAD file formats are supported and can be easily imported as Graphic
statements
•
CAD Geometry imported in this way has mass and inertia attributes
•
The Body to which CADGraphics are attached, can automatically inherit the mass and
inertia properties based on the geometry properties
•
User can pick specific components in geometry and export them to solver. A separate
parasolid file will be generated with the component being selected. No mesh data written
to XML file.
•
User has the flexibility to change mesh refinement level of geometry by adjusting the
fidelity factor before exporting to MotionSolve.
The underlying Parasolid geometry engine is also used to automatically compute mass and inertia
properties for simple analytical shapes such as spheres, cylinders, boxes and frusta.
An option is provided in body panel using which user may choose to inherit mass and inertia
properties from associated graphics.
HyperWorks Desktop 14.0 Release Notes
289
Proprietary Information of Altair Engineering
Materials
A default set of materials with material properties is now available. These materials can be used
either in an NLFE Body or CADGraphics. The Materials can be accessed using the menu Model >
Materials.
Usability Improvements
•
Multiple picking from Graphics area to cut/delete entities.
entities.
•
Merging multiple bodies from the graphics area. User can select two or more bodies
(using the Shift key), use the right click to merge the bodies to a new body or to Ground
Body
•
A new option is now available in MotionView to select a Ground Body.When Body collector
is active (to pick a body as a reference into an entity panel), clicking on empty space in
the Graphics area picks Ground Body with following option ON.
HyperWorks Desktop 14.0 Release Notes
Hold Shift key to select many
290
Proprietary Information of Altair Engineering
General State Element (GSE)
The General State Element, also known as CONTROL_STATEEQN in MotionSolve, is now fully supported.
This includes the user interface and complete MDL support. You no longer need a Templex template to
use this capability. A Control_StateEquation icon is available in the “Control Entity” toolbar to add the
entity.
The two tabs in the panel can be used to define all the necessary inputs to the control state equation.
HyperWorks Desktop 14.0 Release Notes
291
Proprietary Information of Altair Engineering
Implicit Variables
This enhancement is applicable only in the MotionSolve mode. Traditionally, the REFERENCE_VARIABLE
in MotionSolve has explicitly defined a new algebraic variable through an expression or a usersubroutine. Solver Variables are now extended so that they are implicitly defined. This means that
VARIABLES can now be used to define constraints, and the VARIABLE, instead of assuming the value of
the expression, now becomes the Lagrange Multiplier required to enforce the constraint.
The SolverVariable panel along with the implicit option has additional controls to tell MotionSolve how
the Lagrange Multiplier has to be handled.
Modal Force
MotionView now supports adding a modal force on a flexible body (Force_FlexModal in MotionSolve).
A modal force can be a distributed force such as fluid pressure or aerodynamic load that can vary
with regards to time time.
HyperWorks Desktop 14.0 Release Notes
292
Proprietary Information of Altair Engineering
The distributed force should be applied on the FE model that would be used to generate the CMS
flexible body. The force would be decomposed into modal form.
MotionView presents the modal force as load case ID as available in the flexible body H3D. The
modal force can be scaled during simulation if needed.
Scalar Action only Force and Torque
MotionView now supports a Scalar action only force or torque. This means that Action Only forces or
torques can be applied in a direction specified by the z-axis of a Marker.
HyperWorks Desktop 14.0 Release Notes
293
Proprietary Information of Altair Engineering
Mass and Inertia Value Correction for Symmetric Pair Bodies
A new symmetry option is now available in MotionView to define symmetric body pairs. Cross products
of inertias are properly negated (about the Global ZX plane) when a body is reflected. This new option
can be turned on using the Tools > Options > Build Model. The symmetric pair’s properties
correspond to the bodies being represented as mirror reflections of each other.
The new calculation considers the offset between the CM marker and IM marker if any. Non-symmetry
of the CM location is not considered. Also, the symmetry is not applied to initial conditions.
HyperWorks Desktop 14.0 Release Notes
294
Proprietary Information of Altair Engineering
“Body Deformable” Changed to “Flex Body (CMS)”
The option “Body Deformable” that is used to define a flexible body has been renamed to “Flex Body
(CMS)” to distinguish it from the NLFE body. (The NLFE Body is added through the “Add Body”
dialog)
The “Flex Body CMS” panel has additional options:
•
Rigidify – to set the MotionSolve attribute rigidified = “true” in <Body_Flexible
•
Include Geometric stiffening – To include geometric stiffening during solution of flexible
body whose H3d has geometric stiffness data
Import CAD or FE
•
Now opens with mesh options expanded
•
Graphic H3d files are automatically populated while selecting an input file
•
Multiple confirmation messages related to successful import are eliminated.
API for Calculating Aggregate Mass, CG and Inertia Properties of Systems
MotionView now provides a new TCL API, GetAggregateCGAndInertia, which allows you to calculate
the aggregate mass, center of gravity, moment of inertia and product of inertias for multiple
HyperWorks Desktop 14.0 Release Notes
295
Proprietary Information of Altair Engineering
systems or multiple bodies in your model. Documentation for this function is included with this
release.
Enhanced FatiguePrep Tool
MotionView now supports translation of .plt to RPC format.
Recent Files
The File menu now lists the four most recent MDL files used.
Resolved Issues
Graphic Selection/Picking
Linux/Mac Entity Selection: When a body is selected in a browser on Linux, all the mesh lines of the
graphics of that body were highlighted. This is now resolved
Pick center choice with Ctrl+Middle mouse button was not being honored correctly. The graphics
used to rotate about a different center than selected. This issue is fixed.
ADM Import
ADM files with expressions having large blank spaces from the beginning of the line leads to
expressions being truncated. This issue is fixed in this release.
Import of ADM that did not contain MATRIX information for flexible body resulted in crash of
application. This issue has been fixed.
Flexprep
Issues related to incorrect modes and interface nodes while converting .h3d files to .mnf files and
.mnf to .h3d files are resolved within this release.
Erroneous GENSTIFF and SELNOD matrix was being written out while converting .h3d to .mtx when
using kgf as the solver unit. This issue is fixed within this release.
An application error while using Create RBE2 spiders option in flex prep is fixed. The error appeared
while closing HyperMesh button with the Close (x) button.
Graphics Entity
A custom ID specified for a graphic entity was lost on Check Model. This issue is fixed.
MotionView would not report error when components specified in *Graphic statement of File type
were missing. This issue has been fixed.
HyperWorks Desktop 14.0 Release Notes
296
Proprietary Information of Altair Engineering
An application error while changing the mesh scheme for File Graphics under a Graphic system is
fixed.
MDL
An issue with false referencing of entity due to use of same variable names in a system as well as at
Model level is now fixed. When an entity (e.g. p_0) that existed at Model level was referenced in a
system that contained entity of same type and same variable name (p_0) was being saved with a
local address (p_0 instead of MODEL.p_0).
White spaces in the USER expression in Sensor entity evaluate subroutine resulted in the expression
being truncated. This issue is resolved.
Setting of MAF export option was lost on model save. This issue has been resolved.
Miscellaneous
Statics simulation settings - Maximum # of iterations is now defaulted to 75
Write results data per time option is now set to LAST by default instead of ALL. This resolves issues
in post-processing due to multiple results at certain time steps in a sequential simulation.
Outputs of type Entity sets on bodies used to result in many outputs with the same label. This issue
has been resolved.
An application error in Curve panel while changing type from File to Values is fixed. The error was
encountered when a file path was unresolved.
An application error encountered while using the Back/Forward button in any panel is resolved. The
error used to occur while using the button after deleting an entity that was in the selection history.
Known Issues
NLFE
•
Providing a specific LPRF is not supported for NLFE Body
•
Creating Helical Spring Subsystem with preload is not supported yet
Material Properties
•
MotionView does not scale material property values when units are changed
•
In the Deformable Surface panel and the Deformable Curve panel, the expanded table
does not allow you to pick an entity into a collector.
Contact
•
Switching between radio selections in Properties tab may be slower for large models
HyperWorks Desktop 14.0 Release Notes
297
Proprietary Information of Altair Engineering
•
Importing ADM – CONTACT statements are not converted into Contact entity in
MotionView in some cases. The statement may end up in the Unsupported statements
template.
Modal Force
•
Including Modal force during flexible body generation is not yet supported through Flex
prep
•
Modal Force does not have a graphic representation in MotionView
Geometric Stiffening
•
Unchecking and rechecking "Include Geometric stiffening does not retain the Geostiff modes
checkbox
HyperWorks Desktop 14.0 Release Notes
298
Proprietary Information of Altair Engineering
Other Auto Solution Enhancements
This section documents other important enhancements that have been made to the automotive
simulation capabilities in MotionSolve.
Deformable Strut
A new deformable strut is a new option available in the Assembly Wizard for MacPherson Strut and
Quadra-Link Suspension in the MDLLIB. In the deformable strut, beams model the strut rod and a
point to deformable curve constraint models the strut Tube to strut rod joint. This allows the strut to
bend under load and captures the camber change to due to lateral force common to strut
suspensions.
Users with existing suspension or full vehicle models that wish to use the deformable strut can
import the system definition, sysdef_deformable_strut, from:
$ALTAIR_HOME/hw/mdl/mdllib/Libs/Models/Frnt_strut/polybeam_strut.mdl
User-Defined Tire and Road Models
Tires and their interface with the road can be modeled in multiple ways. The Tyre Data Exchange
(TYDEX) is an accepted standard for this purpose. Many commercially and openly available tire and
road models are described in the TYDEX format. Any tire or road model that conforms to this format
may now be used with MotionSolve.
HyperWorks Desktop 14.0 Release Notes
299
Proprietary Information of Altair Engineering
The user written tire model connects to MotionSolve using the Altair User tire interface. The User tire
interface accepts a tire model that is in the TYDEX format along with an accompanying user defined
TYDEX road model. This is shown in the figure below.
Support for Version 6.2.0.2 of TNO Delft Tyre
MotionSolve now supports MF-TYRE/MF-SWIFT Version 6.2.0.2 on the Windows and Linux platforms.
Notable new features include a motorcycle version of MF-SWIFT for high inclination angles and
support for OpenCRG release 1.0.5.
Note: The licensing of MF-SWIFT has changed in version 6.2.0.2. MF-SWIFT users must obtain a
new license file and new license server software from TNO. MF-TYRE is not affected.
Support for Version 3.0 and 4.1 for CDTire
This release includes support for version 4.1 of the CDTire model. Within this release, you may
optionally select to run CDTire version 3.0.3 with MotionSolve by setting the environment variable
CDTIRE_VERSION to “303”. If the environment variable is not set, then CDTire Version 4.1 is used.
Support for CDTire on Linux
You are now able to run models that use CDTire on Linux. This release supports version 4.1 of the
CDTire.
Note: A new license is needed to run CDTire v.4.1. CDTire version 303 is not supported on Linux.
HyperWorks Desktop 14.0 Release Notes
300
Proprietary Information of Altair Engineering
Support for Static Analysis using CDTire
With this release, support for version CDTire version 4.1 has been added. This version of CDTire
supports static analyses in MotionSolve. This is supported on both, Windows and Linux platforms.
Tire test rig (experimental)
The Tire Test Rig is a system definition in MotionView that can be used to simulate an experimental
test on a tire of one’s choice. This Test rig along with Tire model (specified as a property file) is
loaded on to the system from the Assembly Wizard and the analysis from the Task Wizard.
The following types of analyses are supported:
•
Vertical Load Test
•
Lateral Slip Test
•
Longitudinal Slip Test
For each test, a standard set of results, sufficient to allow you to understand the tire behavior are
generated.
Powertrain Test-rig (experimental)
The Powertrain Test-rig is a system definition in MotionView that can be used to simulate an
experimental test on a powertrain of one’s choice. This Test rig along with power-train model is
loaded on to the system from the Assembly Wizard and the analysis of user’s choice can be loaded
from Task Wizard. The test-rig is commonly used to understand the behavior of a set of parameters
describing the powertrain and tune these so they behave as desired.
HyperWorks Desktop 14.0 Release Notes
301
Proprietary Information of Altair Engineering
Two types of tests are supported currently.
•
Gear Shift Analysis
•
User Defined Analysis
MDLLIB Updates
•
Improved full vehicle kinematics and compliance test rig
− Correlating results between the half vehicle and full vehicle suspensions is now much easier
due to improvements to the full vehicle kinematics and compliance test rig.
•
Improved model initial condition setup
− All initial conditions on a vehicle are set to zero until an event from the analysis wizard is
added.
•
Improved vehicle weight distribution when including a powertrain
− When a vehicle with a powertrain is assembled, the vehicle body location is updated to
account for the increased weight. Thereby improving vehicle weight distribution.
Resolved Issues
Auto Spring Using Force as Install Method
Choosing force as the install method for AutoSpring resulted in an incorrect spring force at design
position during the simulation. This was due to an incorrect spring displacement offset being
calculated. This issue has been resolved.
HyperWorks Desktop 14.0 Release Notes
302
Proprietary Information of Altair Engineering
Auto Bumpstop Pair Impact Formulation Incorrect
Choosing “Impact Length” had no effect and the distance entered was treated as the clearance in
the stop. Choosing “Impact Length” now works properly.
Auto CDTire Pair Tire Graphics not Symmetric
The tire graphics are now centered about the plane passing through the wheel center and
perpendicular to the wheel spin axis. Previously, the changing the tire aspect ratio shifted the tire
graphics along the wheel spin axis.
Ideal Steer Angle Incorrect
The ideal steer angle in the Static Design Factors report for half vehicle analyses is now output
correctly. Previously, a spurious value was output.
CDTire v4.1: CDT20 - Integrator Failures Occur with the Default CDT20 Property File
Testing using the CDTire model 20 with road surface model 2000 (RSM2000) showed simulation
failures. Because CDTire model 20 uses a point-follower contact and road surface model 2000 is
three (3) dimensional, they should not be used together. To prevent inexperienced users from
encountering such failures, the default property file for CDTire in MotionView has been changed to a
CDT30 property file, which is appropriate for all road surface models. However, no changes to
CDTire or MotionSolve were made to resolve this issue. In MotionView the following system
definitions for CDTire now reference a CDT30 property file by default:
•
•
…/hw/mdl/autoentities/definitions_mdl/sysDefCDTire.mdl
…/hw/mdl/autoentities/definitions_mdl/sysDefCDTirePair.mdl
CDTire v4.1: CDT20, CDT30, and CDT40 Messages Truncated
Multi-line information and error messages for CDTire models 20, 30, and 40 were truncated on
output when used with legacy road models and CDTire v4.0. Fraunhofer ITWM corrected the
problem and improved the messages for models 20, 30, and 40.
For example, when the tire property file could not be found CDTire v4.0 output the following
message:
USRMES:USER [1]
INFO: CDTire:: Using CDTire version 4.0.0
USRMES:USER [1]
INFO: CD Tire - Time Discrete Interface.
cdt CDTire R 4.0.0 -> TIRE 1 INITIALIZING
cdt
TIRE MODEL
30 SELECTED
cdt
CTRL FILE SELECTED:
cdt
ERROR:
HyperWorks Desktop 14.0 Release Notes
303
Proprietary Information of Altair Engineering
CDTire v4.1 now reports:
USRMES:USER [1]
INFO: CDTire:: Using CDTire version 4.1
ERRMES:USER [1]
CDTire> CDTIRE_INIT_F: PRIME PAR FILE NOT FOUND AT:
ERRMES:USER [1]
CDTire> ./prop_files/tie_30.21
CDTire v4.1: REQ838 - Adams Models Fail in MotionSolve
The MotionSolve implementation of REQ838 incorrectly ordered the user subroutine input
parameters causing Adams datasets for CDTire to fail when submitted to MotionSolve. The
implementation of REQ838 in MotionSolve now orders parameters as documented by Fraunhofer
ITWM for Adams. The MotionView definitions for CDTire now create output requests using REQ839 to
avoid conflict with ADAMS.
CDTire v4.1: REQ838 – Models Without Output Requests Calling REQ838 Fail
Customers reported that models without output requests calling REQ838 sometimes failed.
However, Altair was unable to reproduce the issue. The problem occurred in the MotionSolve code
that interfaces CDTire. The code was updated to correct the problem.
CDTire v4.1: RSM2000 - Does not work with CDT20, CDT30 and CDT40
This release includes new CDTire new binaries from Fraunhofer ITWM that fix the issue.
CDTire v4.1: Models 20, 30, and 40 Fail with Property File Read Error
When the initial character of the first two lines (as well as any other comment line) of a CDT20, 30
or 40 tire property file began with a numeral, CDTire reported errors reading the file. Fraunhofer
revised CDTire to ignore any comment lines in property files for models 20, 30, 40 and in control
files to correct the problem.
MF-SWIFT: Initial Velocity Reporting Issue in MF-SWIFT Tyre Model
Previously MotionSolve incorrectly reported the initial velocities for tires using the MF-SWIFT model.
MotionSolve now correctly reports the initial velocities for tires using the MF-SWIFT model.
Using FIESUB 810 Causes Failure in Quasi-Static Model
•
With the previous version, using FIESUB 810 caused a solver failure for a Quasi-Static
model shared with Altair. This was determined to be due to a programming error in the
HyperWorks Desktop 14.0 Release Notes
304
Proprietary Information of Altair Engineering
code, where the row and column values for the FIELD Jacobian were interchanged. This
has been fixed with this release.
•
A side-effect of this change is that linear analysis of models containing FIESUB 810 may
yield slightly different results. This is to be expected, since the bug-fix involves a
correction to the Jacobian matrix of the system. The following changes may be seen for
these models:
− The set of independent coordinates may be slightly different
− The eigenvalues and eigenvectors may be slightly altered
− The ABCD matrices may be slightly different
Fixes to ACTCLC Routine
The contact patch velocities, slip angle and inclination angle were incorrectly computed in the
previous version of the ACTCLC routine for the user tire. These have been corrected to be consistent
with the documentation that has been shared previously with Honda.
MDLLIB: Tire Envelope Analysis on Half Vehicle Models now Support Property File Based
Shock Absorber
This was non-functional in previous releases. This issue has been fixed.
MDLLIB: Support for Models using Legacy Steering Boost System
This was non-functional in previous releases. This issue has been fixed.
MDLLIB: Full Vehicle Analyses - Incorrect Initial Rotation Velocities Using SETIC/SETWIC
Previously when using the SETIC/SETWIC option for initial velocities, the initial rotational velocities
of half-shafts, hubs and other bodies in the driveline were inconsistent with the initial rotational
velocities of the driven wheels. The initial rotational velocities are now consistent.
MDLLIB: Full Vehicle KnC Analysis
KnC analysis results for the same suspension match between Full Vehicle and Half Vehicle Analyses.
Previously, there were small differences.
MDLLIB: Steering Column System
The column support joint is moved to the lower column shaft center of mass. This makes the
support joint easier to identify when, for example, attaching the steering column to a flexible body.
HyperWorks Desktop 14.0 Release Notes
305
Proprietary Information of Altair Engineering
Known Issues
Road Tools:
The road tools dialog should offer a means to abort road graphics generation because of the
large time require for some road file.
•
Driver:
•
Feedforward Controller doesn't follow acceleration profiles well
•
When using the driver, the tire longitudinal slip shows oscillations at time=0
•
Zero vehicle speed causes steering controller to fail.
•
Driver event UI is experimental: To enable the event editor button on the driver panel in
MotionView set the environment variable HW_MV_EXPERIMENTAL to ADVANCED_DRIVER.
MDLLIB
•
Full vehicle events with a powertrain often fail to solve because the suspension spring
preloads are too small causing the excessive suspension jounce. We recommend increasing
the spring preloads to compensate for the mass of the powertrain, and as always you should
update models.
•
Steering systems contain dummy bodies to support analyses, but these have no meaning to
users.
•
Some combinations of wizard selections do not build because referenced system definitions
use the same varname.
•
To reduce the length of the Constant Radius event the length of the initial straight section
should be based on the initial vehicle velocity
HyperWorks Desktop 14.0 Release Notes
306
Proprietary Information of Altair Engineering
OptiStruct Enhancements Pertinent to Multibody Simulations
This section documents other important enhancements that have been made to OptiStruct that you
should be aware of.
MBD Analysis Results can now be Recovered for Flexible Bodies in OptiStruct
After a MotionSolve run, it is possible to recover displacements, velocities, accelerations, stresses,
and strains for the flex-body in OptiStruct in order to create .op2 and .h3d results files for fatigue
analysis. The procedure is explained as follows:
•
First, you perform a MotionSolve simulation with a model that contains flexible bodies.
MotionSolve creates a results file (*.mrf) that contains the modal participation factors at
each time step for the Flex Body.
•
Next, in OptiStruct, perform a residual run to recover displacement, velocity, acceleration,
stress, and strain results for interior girds and elements in the Flex Body based on the
modal participation results from MotionSolve. In the residual run, the Flex Body
filename_recov.h3d file and the .mrf results file are specified using the ASSIGN data:
− ASSIGN, H3DMBD, 30101, ’pfbody_1_recov.h3d’
− ASSIGN, H3DMBD, 30102, ’pfbody_2_recov.h3d’
− ASSIGN, MBDINP, 10,
’pfbody.mrf’
The 10 in the ASSIGN, MBDINP data corresponds to the SUBCASE for which the MotionSolve results
will be used. In SUBCASE 10, instead of performing a transient analysis, OptiStruct will just use the
results from MotionSolve.
The 30101 and 30102 in the ASSIGN, H3DMBD data refer to the Flex Body ID’s in the .mrf file3.
New Parameter and Solution Control Data
•
PARAM, MBDREC: The parameter MBDREC can be used to create solver and recovery .h3d
files during Component Mode Synthesis (CMS)
•
PARAM, CMSDIRM: The parameter CMSDIRM can be used to allow or disallow flexible
body generation when directional masses are defined in the input file
•
ASSIGN, H3DMBD: Identifies an external nodal flexh3d file that contains the analysis
recovery information for displacements, velocities, accelerations, stresses and strains.
•
ASSIGN, MBDINP: Identifies an external file from which to read the modal participation
factors calculated by MotionSolve for transient analysis
•
CMSMETH, 1, CBG, , 15: CBG is the keyword that instructs OptiStruct to create the CMS
flexible body with additional geometric stiffness data using the Craig-Bampton CMS
method
PARAM, MBDREC
Two H3D files are generated when the PARAM, MBDREC option is used.
HyperWorks Desktop 14.0 Release Notes
307
Proprietary Information of Altair Engineering
•
A PLOTEL based FlexH3D file that contains a minimum set of graphics and all the necessary
information required by MotionView and MotionSolve to perform a multibody simulation with
CMS flexible bodies.
•
A “Recover FlexH3D” file that contains all the information need by OptiStruct to recover the full
set of stress and strains from a MotionSolve simulation.
The overall process for using this is illustrated below.
•
A small file *.h3d contains the minimum amount of information needed for MBD simulation in
MotionSolve. FlexH3D files are significantly smaller (sometimes by 100x), and file management
becomes much simpler.
A larger file *_recov.h3d will also be generated that contains the information from the small file as
well as recovery information for displacement, velocity, acceleration, stress, and strain.
HyperWorks Desktop 14.0 Release Notes
308
Proprietary Information of Altair Engineering
Inspire 2016 Release Notes
The following features and capabilities have been added or modified for solidThinking Inspire® version
2016:
PolyNURBS Tools
Create PolyNURBS
The new Create tool allows you to quickly create free-form solid geometry that is smooth and
continuous.
Wrap
The new Wrap tool allows you to quickly generate polynurbs geometry by clicking along the contour
of your existing shape.
Add/Remove
The new +/- tool allows you to add a new cage to the face of an existing cage, so you can quickly
build the basic shape of a PolyNURBS object.
Loop
The new Loop tool allows you to draw an edge loop around a cage.
Bridge
The new Bridge tool allows you to connect two cages together. You can also use it to create a hole
through an existing cage.
Sharpen
The new Sharpen tool allows you to sharpen the edges of the underlying geometry at the edge of
the cage.
HyperWorks Desktop 14.0 Release Notes
309
Proprietary Information of Altair Engineering
Geometry Tools
Midsurface
The new Midsurface tool allows you to find and extract surfaces from single thickness thin solid
geometry.
Mirror
The new Mirror tool allows you to reflect selected parts across a symmetry plane.
Scale
The new Scale tool allows you to resize selected parts.
Revolve
The new Revolve tool allows you to revolve a planar face around an edge, a line, or a cylindrical
hole. You can also create a new part by holding down the Ctrl or Shift key as you pull.
Push/Pull
The updated Push/Pull tool allows you to create a new part by holding down the Ctrl or Shift key as
you pull.
Setup Tools
Enforced Displacements
The new Enforced Displacements tool can be used when the magnitude of a force applied to a part is
unknown, but you do know how much the part displaces as a result of that force.
Angular Velocity and Acceleration
The new Angular Velocity and Accelerations tool allows you to define the speed of rotation of the
entire model and the axis about which it rotates.
g-Loads
The new g-Loads tool allows you to simulate a model undergoing acceleration, which imparts a force
on all of the parts in the model.
HyperWorks Desktop 14.0 Release Notes
310
Proprietary Information of Altair Engineering
Temperature Loads
The new Temperatures tool allows you to simulate the effects of temperature changes on your
model.
Optimization and Analysis
Buckling Analysis
You can now analyze your model for buckling modes, which are used to predict when a part will
bend or collapse under load.
Compare Results
The new Comparison tool allows you to compare the results of analysis or optimization runs.
Callouts
You can now add callouts to view analysis results at specific locations on your model.
User Interface
Section Cuts
The new Section Cut tool allows you to view 2D cross-sections of your model.
Move Tool
The updated Move tool features updated graphic manipulators with larger pick targets. You can also
double-click to reposition the tool.
Model Configuration
Press F5 to open the Model Configuration toolbar on the Model Browser.
HyperWorks Desktop 14.0 Release Notes
311
Proprietary Information of Altair Engineering
Standard Views
Standard views can now be accessed from buttons below the View Rotator in the lower left corner of
the modeling window.
File Input/Output
Product Data Management
Inspire now supports product data management (PDM) via PTC Windchill and Siemens Teamcenter.
HyperWorks Desktop 14.0 Release Notes
312
Proprietary Information of Altair Engineering
Evolve 2016 Release Notes
The following features and capabilities have been added or modified for solidThinking Evolve® version
2016:
User Interface and Workflow
Translate, Rotate, and Scale
The parameters in the Control Panel for the Translate, Rotate, and Scale tools have been simplified.
Snaps
Two new point snaps have been added: Snap to Intersections and Snap to Midaxis.
Camera Controls
The camera controls are now displayed by default. Click Show/hide camera icons to hide them.
The camera position can be locked using the new Lock Camera icon located above the camera
controls, along the right side of each modeling view.
Console
Spacebar and Enter usage has been unified so that either key can be used to accept Console input
for all tools.
Snapshot
A snapshot of the current model can be taken using the Snapshot icon located along the right side of
each modeling view.
Image Browser
The Renderings Browser has been renamed the Image Browser because it now displays snapshots in
addition to final renderings. It now supports image panning and zooming, and contains file and
rendering information for rendered images.
Control Panel
The Control Panel has been redesigned so that parameters are grouped together more clearly.
HyperWorks Desktop 14.0 Release Notes
313
Proprietary Information of Altair Engineering
Curve Plot
The color of the Curve Plot has been changed from white to gray to improve visibility.
Default Theme
The default theme has been updated to a lighter color palette to improve visibility.
Background Image
Interactive handles have been added to the Background Image tool, allowing you to translate and
rotate reference images directly in the modeling views.
Open Folder in Finder (Mac)
On Mac, you can now determine the location of an open file by holding down the Command key and
clicking on the file name in the title bar of the application.
Modeling
Edit PolyNURBS Tool
The Edit PolyNURBS tool has several new features:
•
Edges and faces can be bridged together using the new Create Bridge button. (There is
no longer a separate Faces Bridge tool.)
•
An Auto-align axis feature has been added to facilitate face editing. When you translate or
rotate a face, the transformation operation automatically aligns to the face's local axes.
•
New edge creasing options have been added, allowing you to make selected edges
sharper or smoother.
•
The new Advanced selection mode allows you to quickly select or deselect loops and
adjacent rows of faces or edges.
•
The new Info panel at the bottom of the Control Panel flags potential topology issues in
red. Potential issues are also flagged in red in the modeling views.
Draft Analysis Tool
The new Draft Analysis tool allows you to visualize and identify problematic areas related to draft
angles in the molding process.
HyperWorks Desktop 14.0 Release Notes
314
Proprietary Information of Altair Engineering
Divide Curve Tool
The Divide Curve tool has been updated to allow you to divide a curve into multiple independent
curves and the output is now contained in construction history.
Intersect Curve Tool
The new Intersect Curve tool replaces the former Split Curve tool and allows you to create trimmed
curves by splitting selected curves into separate pieces and keeping only the desired pieces. The
input curves do not need to physically intersect, as Evolve can create a visual intersection. The
output is now contained in construction history.
Rotate Tool
The improved Rotate tool not only has more user-friendly interactive handles, it also allows you to
rotate about a custom rotation axis, and rotate with reference to a start point and an optional end
point on another object.
Loft and Sweep Tools
The updated Loft and Sweep tools offer a new feature called Auto-alignment, which lets you use
profiles for reference only (i.e., the profiles and rails don't have to intersect). It comes with extra
parameters that let you fully control the position and orientation of each profile.
Modeling Tool Feedback
Modeling tool feedback is now available for the Intersect Curve, Surface Offset, Shelling, Trim,
Boolean Subtraction, Boolean Union, and Boolean Intersection tools.
When one of these modeling tool fails, an error icon is displayed next to the object's name in the
World Browser. Hovering over the object's name in the World Browser displays information
regarding the error.
Rectangle, Cube, Plane, PolyCube, PolyPlane Tools
The names of the Width, Thickness, and Height parameters for the Rectangle: corner, corner; Rect:
3 Points; Plane; Cube; PolyCube; and PolyPlane tools have been changed to Length, Width, and
Height. In addition, you can now create a centered object by holding down the Ctrl key as you click
the tool icon.
A new rectangle tool has been added, Rectangle: center, corner.
HyperWorks Desktop 14.0 Release Notes
315
Proprietary Information of Altair Engineering
Rendering
Interactive Rendering
The Interactive Rendering display mode by default uses the Performance (GPU+CPU) rendering
method and automatically stops when the specified samples per pixel has been reached.
Selecting Enable Caustics will switch to the Full rendering method.
Pause/Restart options have also been added and can be activated by clicking on the IR icon.
Metallic Flakes
The new Metallic Flakes option allows you to add metallic flakes to the base color of Plastic
materials. It includes controls for flake color, size, density, and glow.
Final Renderings
Final renderings can be paused and resumed, and the estimated rendering time is displayed.
Rendering Info has also been added to the rendered image in the Image Browser.
Texture Positioning
The Texture Positioning tool was updated to support adjustments to brightness and contrast in
texture maps.
Environment Properties
Environment Properties parameters have been renamed and rearranged for ease of use.
The new Ground option allows you to insert a ground plane to catch shadows from objects in your
scene.
.IBL format support has been added.
Restore Default Settings
A Restore Default Settings button has been added to the Material Properties, Environment
Properties, and Rendering Properties tools.
Rendering Properties
A Swap button has been added to the Rendering Properties tool, allowing you to invert the width
and height values of the final rendered image.
360° Panoramic has been added, allowing you to use your scene to create a HDR environment map.
HyperWorks Desktop 14.0 Release Notes
316
Proprietary Information of Altair Engineering
Input/Output
sT-Adv
All formats are now listed individually.
Operating Systems
Improved Graphics
Enabled and forced High Performance Graphics with Optimus Intel/NVIDIA architecture.
Forced discrete graphics in AMD Switchable Graphics, AMD/Intel combo GPU architecture.
HyperWorks Desktop 14.0 Release Notes
317
Proprietary Information of Altair Engineering
FEKO 14.0 Release Notes
Highlights
FEKO joins the Altair family and is included as part of the HyperWorks simulation software platform. In
the 14.0 release FEKO boasts numerous extensions to both its user interface and the electromagnetic
solver. Highlights include curvilinear segments, complete application automation for CADFEKO, script
recording and extensions to higher order basis functions (HOBF).
Curvilinear Segments
EKO now supports curvilinear segments for the
method of moments (MoM) and multilevel fast
multipole method (MLFMM) solvers.
This extension allows for models with fewer
segments in comparison to linear segments to
obtain the same geometrical accuracy.
Curvilinear segments are also used in cases
where it is impossible to reduce the segment
length without violating mesh segmentation
rules.
FEKO supports the import and export of
curvilinear segments in and to the following
formats:
•
Import from NASTRAN, ANSYS
(CDB) and Abaqus file formats
•
Export to NASTRAN, Gerber and
AutoCAD (DXF) file formats
Comparison of linear segments (left) and curvilinear segments
(right) with a near field, surface currents and wire currents.
CADFEKO and POSTFEKO fully support the display of curvilinear segments. This includes the display
of currents and charges in a 3D view.
HOBF for Hybrid MoM/UTD and Hybrid MoM/RL-GO
Higher order basis functions (HOBF) are now supported for the MoM hybridised with the following
methods:
•
Uniform theory of diffraction (UTD)
•
Ray launching - geometrical optics (RL-GO)
HyperWorks Desktop 14.0 Release Notes
318
Proprietary Information of Altair Engineering
Complete Application Automation in CADFEKO
In the 14.0 release the application automation in
CADFEKO is now complete. Any action
performed manually in CADFEKO can now be
done via scripting. The completed application
automation is documented extensively and
contains numerous examples.
Script Recording in CADFEKO
CADFEKO now supports script recording. Start the recording process and manually perform actions
in CADFEKO. Perform the actions that need to be recorded, stop the recording process and view the
recorded script. Once a script is created, it can be modified to perform more advanced and repetitive
actions. Analysing the generated script aids in learning the application automation syntax.
HyperWorks Desktop 14.0 Release Notes
319
Proprietary Information of Altair Engineering
Other Notable Changes
The GUI components have been extended to support all new features and solution techniques in the
FEKO solver. In addition to supporting the new solver features, numerous other features and
improvements have also been implemented. These features are listed in the sections that follow.
CADFEKO - 3D CAD Modeler
•
Improved automatic mesh settings reduce the cases where a user needs to specify the
mesh size settings:
− HOBF faces are automatically meshed with a refinement applied to multiple media junction
edges. These edges are meshed according to the lowest order (0.5).
− Metal faces which separate two surface equivalence principle (SEP) regions are now meshed
according to the smallest wavelength on either side of the face. Non-metallic faces are
meshed according to the largest wavelength on either side of the face.
•
Extensions to the finite difference time domain (FDTD) solver includes:
− Added support for multiple configurations in a single model.
− Added support for perfect magnetic conductor (PMC) boundary conditions.
− Added the ability to use an implicit wire radius definition (user does not need to specify a wire
radius).
•
Added the ability to rotate array elements when creating a cylindrical/circular array.
•
Added support for the Vance braided shield definition for cable modelling.
•
Added the ability to change the model extents even if it results in faulty parts. It allows
the model to be modified and the (possibly) faulty elements to be fixed later using the
CAD fixing tools.
•
Extended the internal frameworks for the equivalent sources and receiving antennas to
accommodate future extensions. Due to these modifications, layout changes are evident
in the equivalent source dialogs and receiving antenna dialogs.
•
Added the ability to allow users to select or deselect all layers when importing Gerber,
ODB++ or AutoCAD files.
•
Added support for the import of Gerber, ODB++ and 3Di formats on Linux. Previously the
file formats were only supported for Windows.
•
Added support for an advanced healing option on the Import geometry dialog. This option
adds extensive healing operations to the import process. Due to the time-consuming
nature of the healing process, it is not the default setting.
•
Added the ability to set the 3D view font settings on the Default settings dialog.
•
Added the ability to select either the model mesh or simulation mesh for export when
exporting a mesh.
•
Dialogs now allow referenced entities to be created on the fly with the creation button
located next to the required entity.
•
Updated the CAD exchange library to allow the latest CAD file formats to be imported and
exported.
HyperWorks Desktop 14.0 Release Notes
320
Proprietary Information of Altair Engineering
POSTFEKO - Post-processor
The following extensions to the application programming interface (API) are shared between
CADFEKO and POSTFEKO:
•
Added support for callback functions on forms. Callback functions allow forms to respond
dynamically to actions performed on the dialog.
•
Extensions to the Matrix and ComplexMatrix objects:
− Added support for additional construction methods to allow alternative initializations for
matrices.
− Added support for element-wise operations for standard math functions. The element-wise
operations and element-wise comparisons allow calculations to be performed faster in
comparison to performing the same operations within a loop. The ComplexMatrix object
supports the transpose and element-wise transpose.
− Added support for a Find function as an efficient way to search in matrices.
•
Added support for currents and charges on surfaces and wires in the scripting
environment to allow further post-processing. A currents and charges math script is
included allowing customised calculations which can be displayed in the 3D view.
•
Added the UpdateStoredData method and Delete method to simplify the modification and
maintenance of stored results.
•
Added the Clone method to the DataSet object. This new method simplifies DataSet
creation.
•
The DataSet object now allows faster processing and data storage.
•
Power setting information is available in the scripting environment for further postprocessing.
•
Added the ability to execute a script in a non-interactive way by including the --noninteractive option in the command line.
Other enhancements:
•
Added the Received signal phase quantity to the receiving antenna results.
•
Added the ability to add math scripts to an empty project. When data in the form of math
scripts or imported data is available, it can be displayed on a 2D or 3D graph.
•
Added support to display the impedance data for loads and general networks on a Smith
chart.
•
Added the ability to hide a trace in the 2D legend by leaving its legend text empty. This
feature allows control over the entries displayed in the 2D legend.
EDITFEKO - Scripting Model Editor
•
Added support at the BC card to specify perfect magnetic conductor (PMC) boundary
conditions when using the FDTD solver.
•
Added support at the SH card for the Vance braided shield type.
HyperWorks Desktop 14.0 Release Notes
321
Proprietary Information of Altair Engineering
Electromagnetic Solution Kernel
•
Improved performance and stability of the kernel by updating to the latest libraries, math
libraries and compilers.
•
Added support for the GPU CUDA version 7.0 framework for both Windows and Linux.
•
Upgraded the Intel MPI library for Windows to version 5.0.
•
Extensions to the finite difference time domain (FDTD) solver include:
− Added support for multiple configurations in a single model.
− Added support for zero impedance loads.
− Added the ability to treat a port without a source or load as a short circuit (similar to the
MoM).
− Added support for OpenMP parallelisation.
•
Added a warning to the kernel that notifies a user if the modes of a waveguide port are
evanescent when solved with the MoM.
•
Added support to radar cross section (RCS) computations for active voltage sources in
addition to the incident plane wave in a model.
•
Processing time is reduced significantly when using impressed aperture sources in
conjunction with RL-GO.
•
Each solution request is now written to a separate *.ffe/*.hfe/*.efe file in the format
<FEKO_base_filename>_<requestname>(k).extension.
Support Components, Installation and Licensing
•
Added the ability to launch the FEKO installer from the HyperWorks master installer.
•
Added support for multiple concurrent installations of the same version of FEKO in
Windows (this has always been supported in Linux).
•
Added the ability to perform an installation on Windows without administrative rights.
Although some features may still require administrative rights to be correctly set up,
these can be configured after the installation if required.
•
Integrated FEKO as a recognised solver in HyperStudy.
•
Refined the Optenni Lab plugin and improved its integration with FEKO.
•
Added a parameter sweep plugin that allows the configuring and launching of a parameter
sweep in CADFEKO as well as processing the calculated results in POSTFEKO.
•
Support for 32-bit architecture is being phased out and is not available for download. If
you require 32-bit support, please contact the Altair Support team.
•
The Altair Student Edition (with significantly increased limits in terms of number of mesh
elements) replaces the FEKO LITE version.
HyperWorks Desktop 14.0 Release Notes
322
Proprietary Information of Altair Engineering
AcuFieldView 14.0 Release Notes
Highlights
AcuSolve 14.0 includes a new version of AcuFieldView that is based on Intelligent Light’s latest release
of FieldView. This release includes several new post-processing capabilities allowing users to read data
faster with better control, load layout restarts, compute streamlines from user defined seeds and gives
easier access to user defined colormaps.
Improved Performance and Additional Controls for AcuSolve Reader
Users will first notice new direct reader options when loading AcuSolve results files. The AcuSolve
direct reader includes new options to control the information read into AcuFieldView. Users have the
option to read the extended output by toggling the “Read Extended Variables” checkbox and/or read
duplicate boundaries by toggling the “Read Duplicate Boundaries” checkbox. By default, both of
these options are off. This does represent a change in behavior with respect to previous releases.
When loading results with more than one time step (transient dataset), the Time Step Selection
panel now has the option to “Read as Steady State”. These settings, along with coding optimizations
within with AcuSolve direct reader reduce the time needed to read data into AcuFieldView. These
optimizations have made the direct read times nearly equivalent to the time necessary to convert the
data using AcuTrans and read via the FV-UNS format. The following table summarizes the read
performance.
Read Time (Minutes)
Read Time (Minutes)
Model
Element
Count
V13.0 Basic
Variables
V14.0
Basic
Variables
V13.0
Extended
Variables
V14.0
Extended
Variables
VWT Roadster AcuSolve direct
reader
5.54E+07
4.8
4.6
11.3
5.2
VWT Roadster
- FV-UNS
reader
5.54E+07
4.9
4.4
-
-
Performance of AcuSolve data read operations using AcuFieldView V13.0 and V14.0
Reading Extended Variables
A "Read Extended Variables" button has been added to the AcuSolve direct reader data input panel.
When turned on, “Read Extended Variables” gives users access to additional variables from the
AcuSolve solution database. This allows post-processing and visualization of additional quantities,
but comes at the expense of slower read times.
HyperWorks Desktop 14.0 Release Notes
323
Proprietary Information of Altair Engineering
If active, the extended and derived quantities are added to the nodal output variables to form the
variable list that is presented to the user. The extended variable list can be expanded further by
setting the environment variable FV_ACUSOLVE_GRAD. This will cause AcuFieldView to read the
gradients of the transport variables. By allowing the user to specify whether the extended variables
should be read gives additional control, allowing for faster read times and more succinct data
inquiry. Note that in releases of AcuFieldView prior to V13.0, the option to read extended variables
was on by default and was controlled by an environment variable.
Read Duplicate Boundaries
The AcuSolve direct reader data input panel now contains an option to read duplicate boundary
surfaces.
When turned on, AcuFieldView will create duplicate boundary surface entries for surfaces that are
reproductions of each other. For example, if the collection of faces present within a simple boundary
condition command and a surface output command are identical, these surfaces are assumed to be
duplicates. By default, only one boundary surface entry will be created for the duplicated pair. If
HyperWorks Desktop 14.0 Release Notes
324
Proprietary Information of Altair Engineering
the "Read Duplicate Boundaries" option is turned on, however, AcuFieldView will create a unique
boundary surface entry for each instance of the duplicated surface. Note that in releases of
AcuFieldView prior to V13.0, duplicate surfaces were always read. This option eliminates these
duplicates, yielding simplified lists of surfaces in the boundary surface creation panel.
Read as Steady State
A “Read as Steady State” button has been added to the Time Step Selection panel when using the
AcuSolve direct reader. When active, AcuFieldView will load a specific time step of a multiple time
step dataset, as selected by the user, then treat it as static data. This feature is added to provide
consistent behavior between the FV-UNS data import route and the AcuSolve direct reader import
route. When reading FV-UNS files, AcuFieldView checks for sequences in the file name, then
prompts you to indicate whether the data is steady or transient. The “Read as Steady State” button
provides this same functionality for the AcuSolve direct reader. Note that this option has
implications for particle path display behavior as well as the availability of special annotation strings
such as Time=%%T or Time Step=%%N. The dataset needs to be read as transient, with the
“Read as Steady State” option turned off, to restore the behavior of the direct reader to that of
releases prior to V13.0.
Load Layout Restart Files
Starting with AcuFieldView 13.0, AcuFieldView has the ability to display multiple windows, called
Mult-Window Layouts. The number, size and layout of the windows can be stored to a Multi-Window
Layout Restart file, which can be opened during an AcuFieldView session.
Since defining complex layouts can be tiresome, especially when trying multiple windows of the
exact same size, the AcuFieldView installation directory now provides a number of default Layout
Restart files, under
<Install Directory>/fv/fvx_and_restarts/layout_restarts
These Restart files can be applied to an AcuFieldView session through the following menu:
File > Open Restart > Multi-Window Layout
HyperWorks Desktop 14.0 Release Notes
325
Proprietary Information of Altair Engineering
"Growing" Display Type for Transient Streakline Particle Paths
Particles can now be rendered as growing lines, even for transient datasets. This will let users
visualize not only the current particle's location but also its trajectory over time. This capability is
limited to Particle Paths written to the STREAKLINE format, i.e., for which all time steps have been
written to a single file. It is not supported for the high performance PARTICLE SET format, which
stores no information about trajectories. For particles computed in AcuFieldView with the
Streamlines panel, the environment variable FV_SINGLE_FILE_STEAKLINES can be set to write
particles information to the single file STREAKLINE format. The growing lines are synced to the
solution time. A sphere indicates the start of each growing line.
HyperWorks Desktop 14.0 Release Notes
326
Proprietary Information of Altair Engineering
User-Defined Seeding Locations for Surface Flows
A radio button 'From File' has been added to the Seed Density options for SURFACE RESTRICTED
FLOW on the Vortex Cores/Surface Flows panel. When 'From File' is first selected, a file browser will
come up automatically. To change from a previously read file, click the Browse... button to bring up
the browser explicitly.
The seeds location file can be generated in a number of different ways:
•
Outside of AcuFieldView, as a simple text file where each line represents a point location,
with 3 columns for XYZ coordinates.
•
From AcuFieldView, by:
− Exporting a point probe location
− Exporting the points created from an open path from the 2D Plot Panel
After the seeds location file has been selected with the browser, click Calculate on the Vortex
Cores/Surface Flows panel to read it in and generate and display the flow lines.
Each surface flow object may have a unique seeds location file. Points that do not lie on a visible
Boundary Surface will be ignored. File paths will be saved with restarts.
The maximum number of points for user-defined seeding locations for surface flows is the same as
the limit for streamline seeds, currently 2000 streamlines per rake.
HyperWorks Desktop 14.0 Release Notes
327
Proprietary Information of Altair Engineering
Reduced Memory Usage for Rendering
Starting with this version, AcuFieldView will use Vertex Buffer Objects (VBOs) by default for rendering.
This method will allow a significant decrease in memory required for rendering a given scene, while
maintaining a similar level of performance, compared to the default method used in AcuFieldView 14
(display list).
The environment variable FV_USE_FV14_GL_MODE can be set to any value to revert to the GL mode
used in AcuFieldView 14. AcuFieldView will then require more memory to render the same scene, but it
may also perform faster on some older graphic cards or using older graphic drivers.
Both GL modes can be used in conjunction with AcuFieldView's various graphic modes:
•
Local rendering
•
Remote graphics with -hrg or -srg
•
Batch with hardware or software rendering
•
Reduced functionality graphics with FV_RF_GRAPHICS
Colormap Selection Improvements
AcuFieldView has expanded and simplified the process for selecting predefined and user defined
colormaps. Predefined colormaps are now shown directly in the colormap selector tab of a given
coordinate surface, boundary surface, streamline rake, etc. The predefined colormaps are also
accessible from .fvx scripts by specifying the colormap name.
Easier Access to Predefined Colormaps
41 predefined colormaps have been added to the Colormap selector. They appear under the User...
section following the original 8 colormaps. The scroll bar on the right accesses all options.
AcuFieldView now displays an icon in front of each colormap, making it easier to identify them. This
is especially beneficial now that the list includes 50 colormaps.
Easier Access to User Colormaps
User defined colormaps can now be referenced by AcuFieldView by including the .col files in specific
directories. At startup, AcuFieldView will look for two directories:
<Install Directory>\fv\data\colormaps
$HOME/FieldView/colormaps
•
Under Windows, this is C:\Users\<USER>\FieldView\colormaps
•
Under Linux, this is /home/<USER>/FieldView/Colormaps
AcuFieldView scans these directories for .col files and will include them in the colormap selector
panel. One of the two directories mentioned above will always be found if AcuFieldView is installed.
The basename of each .col file will be added to the User section of the Colormap selector.
HyperWorks Desktop 14.0 Release Notes
328
Proprietary Information of Altair Engineering
FVX Scalar Colormaps
FVX support for defined scalar colormap names has been extended from 8 to 49 options.
If scalar_colormap.name does not match a defined colormap name, AcuFieldView assumes the
string represents a filename, including path, of a colormap file.
The complete list of predefined colormap names is given in the following table.
'spectrum'
'chrome'
'big difference'
'radiation colors'
'nasa-1'
'cold'
'bio spectrum 1'
'red to blue diff'
'nasa-2'
'dark radiation'
'bio spectrum 2'
'red to purple diff'
'gray scale'
'dark spectrum'
'bloodflow
doppler'
'relief map'
'color striped'
'dark green
gradient'
'blue chrome'
'relief map land'
'black & white'
'flame transition'
'camouflage'
'relief map ocean'
'striped'
'gold'
'ccm blue red'
'simple flux'
'zebra'
'high contrast'
'ccm cool warm'
'small difference'
'achromatic vision 1'
'hot'
'ccm high
contrast'
'spectrum diff
gray'
'achromatic vision 2'
'hot to cold diff'
'ccm spectrum'
'spectrum diff
white'
'banded blue to red
dark'
'indigo flame'
'cd spectrum'
'steel blue'
'banded blue to red
light'
'banded
grayscale'
'leaf color'
'teal black
gradient'
'cd striped'
HyperWorks Desktop 14.0 Release Notes
329
Proprietary Information of Altair Engineering
HyperWorks Desktop 14.0 Release Notes
330
Proprietary Information of Altair Engineering
SimLab 13.3 Release Notes
System
•
Support added for rotation center “Ctrl + Left” click for HM mouse settings.
•
Support to highlight faces present in group when the group is selected.
•
Delete entities performance improved for more number of groups.
•
During Abaqus deck export, when the failure elements are found an element group is
created
Import Enhancements
Parasolid
•
Parasolid version updated to 27
•
Support added to import Assembly Structure.
•
Support added to import cylindrical and circular attributes.
UG
JT
Abaqus
•
Sub Assembly creation in Abaqus import if include file with model data is present.
•
Support for reading Gasket element property for bodies that are grouped using *Elset
card in Abaqus.
Nastran
•
The Transition elements present will be created as a separate element group.
•
Support for reading of Analysis LCS. The Analysis LCS nodes that are not referred in any
other LBC's will be created as Assign LCS.
OptiStruct
•
The Transition elements present will be created as a separate element group.
•
Support for reading of Analysis LCS. The Analysis LCS nodes that are not referred in any
other LBC's will be created as Assign LCS.
•
Support for reading gasket elements Gasket property and Gasket materials in OptiStruct.
Export Enhancements
Parasolid
•
Support added to export Body Name, Face color and Groups.
Facet Geometry
•
Performance for large models is improved
HyperWorks Desktop 14.0 Release Notes
331
Proprietary Information of Altair Engineering
Graphics/User Interface
•
Bodies option added in Define Box to draw box primitive by selecting body.
•
Show | Entities | Bodies | By Plane option is added.
•
Edge path option is added in Selection filter.
•
"Select containing bodies" option added in right click for failure element display.
•
Show | Distance | Face to Face and Show | Distance | Edge to Edge option enhanced to
support CAD faces and edges.
•
Show | Distance | Face to Face option enhanced to identify shortest distance.
•
Delete element performance is improved.
•
Delete bodies performance is improved.
•
Create sub assembly option is added in right click – assembly browser.
•
Tutor link support added in Parameter dialog to link the images.
Geometry
Edge | Chaining
•
Node based edge chaining option is added.
Face | Create | From Edges
•
Direction input method support is added.
Face | Create | Polygon
•
Support enhanced if the nodes are not perfectly lying on a plane.
Face | Face Cleanup | Identify Thin Regions
•
Option enhanced to break the identified thin faces.
Face | Connect Surface
•
Color pallet is added to differentiate Face List 1 and Face List 2.
Face | Face Extend
•
Option added to extend the face.
•
Group input is supported.
Body | Create | Block
•
Support enhanced to update origin point location using node or vertex.
•
Block creation performance is improved.
Body | Create | Cylinder
•
Support enhanced to update origin point location using vertex.
Body | Create | Extrude
•
Support enhanced to remember element type for face input.
HyperWorks Desktop 14.0 Release Notes
332
Proprietary Information of Altair Engineering
•
Support enhanced to maintain shared faces with tri element as input and tetra or penta
element as output.
Body | Create | From Faces
•
Support enhanced to update the Body mesh control from the newly created body using
“Remove from parent body” option.
•
“Duplicate and make shared nodes” and “Shared faces in selected bodies” options are
added.
Body | Create | Bounding Box
•
Support added to create bounding box using “Bodies” option.
•
Body name input support is added.
Body | Merge
•
Support added to update Body mesh control when bodies containing same body mesh
control are merged.
Body | Break | Plane (Bounded)
•
Support enhanced to break body or face using finite plane.
Body | Skin
•
Option added to extract the outer and inner faces of the body.
Model | Transfer body
•
Support added to move bodies to sub models.
Transform
•
Support enhanced to update the group with faces from newly created body.
•
Create side face option is added in Offset
Meshing
Mesh Control | IsoLine
•
IsoLine start point identification is enhanced to use primary axis.
Surface Meshing
•
"Improve interior angle" option is added in advanced options.
•
Imprint meshing (parasolid assembly) option is added in advanced options.
Meshing | Auto Cleanup | Fill Hole
•
Support enhanced to collect filled faces and create group.
•
Support enhanced to fill hole by picking non manifold edges.
Boundary Layer
•
Boundary layer meshing option is added. Environment variable should be set as SET
SL_BOUNDARY_LAYER=TRUE.
Volume Meshing
HyperWorks Desktop 14.0 Release Notes
333
Proprietary Information of Altair Engineering
•
"Mesh as a Single body" option is added in advanced options.
•
"Retain 2D surface bodies" option is added to keep shell bodies along with solid.
•
Support enhanced to retain existing solid mesh for Tet element type using “Mesh as a
Single body” option.
•
Aspect Ratio and Aspect Ratio: Nastran quality cleanup support is added.
•
Meshing performance is improved for the CFD support.
Tools | Layered Elements
•
Support enhanced to input all faces in the body.
Tools | Wrapper
•
Advanced wrapper options are supported.
•
Performance is improved for refinement.
•
Local wrap performance is improved.
Tools | Create Pyramid
•
Support enhanced to maintain shared nodes between bodies.
•
Support enhanced to maintain assembly structure.
Qcheck
•
Aspect Ratio auto cleanup support is added for Tet Element type.
•
Auto cleanup support is added for Aspect Ratio – Nastran.
•
Tet cleanup - Support enhanced for multiple bodies.
•
Height quality parameter is supported for Tri and Quad element type
Assembly
Join
•
Matching faces (mesh) assembly performance is improved.
Shared Entities
•
Performance is improved for large models.
Body Union
•
Option enhanced to maintain shared faces during merge bodies.
•
General – Retain faces on other bodies option is added.
FEM
Tools | Remove Logo
•
"Include Loop" Option added to collect the faces to be removed using the given edges.
•
Undo/Redo support is added.
Nodes | Create | Coordinates:
HyperWorks Desktop 14.0 Release Notes
334
Proprietary Information of Altair Engineering
•
X, Y, and Z values are updated in edit box when user picks a node/vertex.
Analysis - Structural and Thermal
Option added for Automatically creating Sets from Groups or Mesh Controls.
Connections | Bush
•
Local coordinate support added for Bush creation. Added the local coordinate id under
CBUSH card for Nastran.
Free Shape design Space is supported for optimization in OptiStruct.
Design Response Equation option added to support DRESP2 card in OptiStruct.
Export
•
ABAQUS
− Mass element support for writing in Abaqus None Analysis type.
•
Nastran
− BarL and BeamL property with various section types supported.
•
OptiStruct
− Param AUTOMSET in OpitStruct Excite Analysis.
− Support for Global SPC writing in OptiStruct. Now the constraints that are not referred in Load
case will be written as global SPC.
•
ANSYS
− Export enhanced to write Body Force load also supports for writing of Global Rotational
Velocity in Solver Input dialog.
− Ansys export enhanced to write Orthotropic material (Using Engineering Constants). Also
supported MXPAND card writing in Modal Analysis.
− Support for Bearing Pressure writing in Ansys CDB format.
− Ansys Solver interface enhanced to directly solve Ansys model from SimLab and load the
Ansys results in SimLab.
Results
Import Results
•
Support added for importing ANSYS results.
•
ANSYS results supported using H3D reader
Midsurface
Connect | Collapse Faces
•
Undo/Redo support added.
HyperWorks Desktop 14.0 Release Notes
335
Proprietary Information of Altair Engineering
Bolt Modeling
Import File
•
The head and thread body will be identified automatically by comparing the diameter of
bolt holes while importing the bolt definition file.
Thread Pretension | Permas
•
Supported PREDIR/SCREWDIR options in Permas Thread pretension creation.
Excite
Crank Fillet
•
New Crank fillet pattern is added.
•
Pattern 6 is redesigned to change the cross section of the fillet.
•
Element type(Hex/Wedge or Tet) support added for Crank fillet.
Crank Bay
•
XML import and export is supported for added element type (Hex/Wedge or Tet) in crank
fillet.
Process Automation
Tutor link added Group Mapping dialog for linking the images.
Trials
Find Crack/Wedge
•
Auto cleanup supported for predefined patterns.
Newly Supported Automation Tools
Geometry
•
Body | Create | Bounding box | Box
•
Body | Create | From Solid Elements | Box
•
Body | Break | Box
System
•
Show | Bodies | By Plane
•
Meshing | Tools
FEM
| Pipe Meshing Tools
Analysis -Structural and Thermal
HyperWorks Desktop 14.0 Release Notes
336
Proprietary Information of Altair Engineering
•
Automatic creation of Sets from Groups or Mesh Controls.
Import Results
•
Import Results | Ansys results file
Special
•
PowerTrain
•
Special | PowerTrain | 1D Ball Bearing
•
Script support added for update attributes.
Trials
System
•
Show | Entities | Bodies | By size
Enhanced Automation Tools
Geometry
•
Body | Create | Extrude | Upto Surface
New Scripting Functions
•
GetNodePositionsFromNodeID - which will give the XYZ values of given node.
•
GetBoxPointsForBodies - will give box points of selected bodies.
•
Common script function added to get bodies with sub string
•
Common function added to pop up message box in Auto play and interactive mode.
•
Script function added to merge all bodies by giving the suffix name as input.
HyperWorks Desktop 14.0 Release Notes
337
Proprietary Information of Altair Engineering
Virtual Wind Tunnel 13.1 Release Notes
Highlights
Virtual Wind Tunnel is a vertical application to perform wind tunnel simulations of vehicles in an
efficient, accurate and robust manner. An intuitive user interface streamlines the process to define
parameters for meshing as well as CFD case setup. The definition of physical objects, like rotating
wheels or heat exchangers, includes intelligent automation to reduce the user interaction to a
minimum.
Automatic report generation is embedded in the system to summarize information about the numerical
model, such as mesh statistics or boundary conditions, as well as the aerodynamic results, like lift and
drag coefficient.
Based on Altair’s CFD solver AcuSolve, Virtual Wind Tunnel delivers highly accurate results and
provides a platform for short product development cycles.
Highlights
•
Supported physics
− Transient/steady state
− Turbulence
− Rotating wheels, moving wind tunnel ground
− Heat-exchanger
− Fluid-Structure-Interaction (FSI)
•
Based on AcuSolve CFD technology
− Fast, robust and accurate solutions for transient and steady state applications
•
Automatic and fast volume meshing
− User defined volume mesh refinement zones
− Boundary layer (BL) parameter definition on a part level
− Exclude parts from BL generation to reduce total element count
•
Dimension measurement utility to ensure model is in correct unit system
•
Vehicle positioning tool
•
Accurate frontal area calculation of vehicle
•
Result output control
•
Automatic reporting
− Report generation containing aerodynamic results, such as drag coeff.
− User defined section cuts and probes for post-processing
HyperWorks Desktop 14.0 Release Notes
338
Proprietary Information of Altair Engineering
New Features
•
Definition of planar section cuts for result contour plotting, such as velocity magnitude on
the symmetry plane of the vehicle. The plots will be included in the automatically
generated report. A selection of different results type are available; for example, pressure
or velocity. The legend range for each result type can be adjusted globally or individually
for each section cut.
•
User defined probe points to monitor the evolution of the flow field in a particular
location, e.g. pressure fluctuations over time. The plots will be included in the
automatically generated report. A selection of different result types are available, for
example, pressure or velocity. The legend range for each result type can be adjusted
globally or individually for each probe point.
•
Support of user defined fluid material by specifying density and viscosity of the material.
•
Implementation of a new algorithm to compute projected frontal areas of vehicles with
high accuracy.
•
Wind tunnel inflow speed can be defined by a velocity magnitude and an angle around the
z-axis, to model situations where side wind effects occur.
Enhancements
•
Definition of number of cores to be used for the CFD analysis has been moved to the Run
dialog.
•
When clicking Export in the Run dialog the *.stmod file of the current session will be
exported to the run directory.
•
Version number of the CFD solver AcuSolve used to perform the analysis is included in
the report.
•
Refinement zones are displayed in the graphic area only when the user has entered the
refinement zone mode.
•
Added a vehicle model for the tutorial into the installation directory, surface mesh and
geometry.
Resolved Issues
•
If a surface mesh model, consisting of quad elements only, is not touching the wind
tunnel ground, the surface model is removed from the analysis domain.
•
Deleting an analysis from the Run History table does not delete all files generated during
the corresponding CFD analysis.
•
If the surface mesh model is not touching the wind tunnel ground, the ref. zones are
ignored for surface meshing and the wind tunnel ground is meshed with a constant
element size.
•
In case the surface mesh model is cutting the top of the wind tunnel, the mesh
intersection step fails and an error message is displayed: “can’t perform mesh
intersection”.
•
The default element size for refinement boxes of type Around Part or Around Body is 1m.
HyperWorks Desktop 14.0 Release Notes
339
Proprietary Information of Altair Engineering
Note
•
It is necessary to install both the Virtual Wind Tunnel 13.1 package as well as the AcuSolve
13.302 package to access the new functionality of VWT.
•
For certain configurations, VWT 13.1 requires the Altair License Manager version 12.1 to be
installed.
HyperWorks Desktop 14.0 Release Notes
340
Proprietary Information of Altair Engineering
HyperXtrude 2015.1 Release Notes
Highlights
Today's extrusion companies are forced to produce a higher mix of complex profiles in shorter product
development cycles while simultaneously reducing their production costs. HyperXtrude is a simulation
tool developed to analyze and validate the design of extrusion dies and process.
HyperXtrude enables production engineers to analysis material flow and heat transfer inside a die
during extrusion to validate die designs which in turn helps to reduce or eliminate costly and timeconsuming die trials.
HyperXtrude® 2015 introduced a new CAD interface for HyperXtrude solver and takes giant leap to a
direct CAD to solution approach. This approach automated and hid the meshing and data deck
creation; and completely relegated it to the background. Hence, after creating the CAD model user
submitted the job for analysis. HyperXtrude 2015 supported only steady state metal extrusion
analysis.
In this release, this is extended to transient, tool deflection, and bearing optimization
analysis.
Supported Analysis Types
•
Profile nose cone analysis (steady state)
•
Multi-cycle transient analysis
− Charge weld analysis
− Billet skin tracking analysis
− Starter billet analysis
− Tapered billet heating analysis
•
Tool deflection analysis with OptiStruct
− With assumed loads
− With loads mapped from extrusion analysis
•
Bearing optimization analysis
Choked Bearing
Interface can automatically handle bearing regions with choke.
Variable Bearing Start
Models with bearing starting at different Z-coordinates (variable bearing start) is supported. This
requires manual manipulation of the bearing region.
Charge Weld Analysis
With a click of a button, any model can be submitted for transient analysis. Charge weld analysis is
automatically enabled.
HyperWorks Desktop 14.0 Release Notes
341
Proprietary Information of Altair Engineering
Billet Skin Tracking
While creating billet, a skin layer can be added with no additional effort. This automatically enable
billet skin tracking analysis, which is used for predicting back end defects, butt length, and any
potential issues with the die design.
Starter Billets
Multi-cycle analysis with different billet lengths for each cycle up to five cycles.
Tapered Billet Heating
HyperXtrude 2015.1 now supports specification of tapered heating: axial, lateral, and radial.
Specification used can be different from cycle to cycle up to a maximum of five cycles. For axial
taper, five linear taper zones are supported.
Tool Deflection Analysis
This release supports an easy to use tool deflection interface. You can import the model, specify
constraints, and submit for analysis. Load surface will be automatically determined. This analysis
supports mapped loads, linearly interpolated loads, and manually specified constant surface loads.
Bearing Optimization Analysis
An interface to set up a bearing optimization analysis is available in this release.
Material Database
An interface to add, delete, edit, and select material is available in the release
Advanced Parameters
While submitting the job for analysis, users can control the tolerance and number of nonlinear
iterations.
HyperWorks Desktop 14.0 Release Notes
342
Proprietary Information of Altair Engineering
Software and Hardware 14.0 Release Notes
Hardware Platforms
Operating System Additions
Support for the following platforms has been added:
•
Red Hat Enterprise Linux 6.6 64-bit (x86_64)
•
SuSE Linux Enterprise Server 11 SP3 (x86_64)
•
Mac OS X 10.9 64-bit (x86_64)
Discontinued Hardware Platform Support Systems
Support for the following platforms has been dropped:
•
Red Hat Enterprise Linux 6.2 64-bit (x86_64)
•
SuSE Linux Enterprise Server 11 SP2 (x86_64)
•
Windows Vista 64-bit (x86_64)
•
Mac OS X 10.8 64-bit (x86_64)
HyperWorks Desktop 14.0 Release Notes
343
Proprietary Information of Altair Engineering
Installation
HyperWorks 14.0 suite contains several independent product packages. This gives you the flexibility
to download desired packages as needed. Any HyperWorks 14.0 standalone SA update package can
be installed either on top of an existing 14.0 installation, or can be installed independently without the
prerequisite of a 14.0 base. Multiple product SA updates can now be installed concurrently with or
without the 14.0 base.
HyperWorks 14.0 installer brings the robust capabilities and features of the HyperWorks installer as
well as the additional support for new products including new GUI based HyperXtrude and FEKO
applications.
New Products, Tools, and Packaging
•
New products and tools
− FEKO product suite
− New GUI based HyperXtrude
− New Linux Compatibility Tool: HyperWorks 14.0 now includes a Linux utility for system
diagnostics to help troubleshoot Linux issues
− New GUI based license utility
− HyperWorks Student Edition available for Mac OS X
− New HyperWorks Toolkit
− MotionSolve subroutine builder
•
Standardized MPI implementations: The implementations of the Message Passing
Interface (MPI) have been standardized across FEKO, AcuSolve, RADIOSS, and
OptiStruct. The Intel, IBM Platform, Microsoft, and MPICH MPI implementations are now
included. End users can still use their own MPI implementation.
Installation
•
Upgrade the HyperWorks Installer to InstallAnywhere 2014 SP1
•
File Association: HyperWorks 14.0 on Windows now associate HyperWorks files with
appropriate HyperWorks applications
•
File Preview: HyperMesh files now have previews in the icons
Invoking
•
HyperMath is now available on on Mac OS X
Resolved Issues
•
Resolved issue encountered when non-HyperWorks product installers existing in the same
directory as Altair HyperWorks installers
•
Improved error reporting for HyperWorks installation
HyperWorks Desktop 14.0 Release Notes
344
Proprietary Information of Altair Engineering
•
Resolved an issue with help configuration in the installer
•
Resolved graphics issues on Optimus based video card setups
Known Limitations
•
In Mac OS X 10.9 the installer will still report “-0” on the Summary panel due to a bug in
InstallAnywhere.
•
Using the Back option during an installer may not reset the installer variables correctly.
•
On Linux and Mac OS X, installing in a directory with spaces is not supported.
•
On Windows 8, desktop and Start Menu icons are blank for server and client installations.
This can be resolved by changing the Windows File Explorer policy to “Allow the use of
remote paths in file shortcut icons”.
•
On Linux, during a console mode install, when using a response file output the Help
Configuration in the file may not write out correctly.
•
If there is not enough TMP/TEMP space on the main drive (such as, C: under Windows),
then the installer will prompt for the user to input to a new location. Some Java
TMP/TEMP space will still try to go to the main drive even when selecting this new
location.
•
When clicking on Cancel to stop an installation via the Master installer, the files that were
already installed are not cleaned up, but the files in the TMP/TEMP folder are cleaned up.
You will need to uninstall/delete the installed files from the chosen install folder manually
if Cancel was used.
•
The HyperWorks installers do not support the use of the default InstallAnywhere
installer.properties files. We request that a unique name is used when using a
response file, (for example, installer_hw14.properties) and to use it with the ‘-f
<path_to_file>/<filename>’ command line option.
•
For NETSETUP client installs, a UNC path must be used to get to the server installation
path through Windows Explorer or Windows Network. Note, using mapped drive letters or
variables is not currently supported in the installer.
•
With some versions of GNOME, there is a bug where the icons are not placed in a
hierarchy. Instead, they are placed in “Other” with a flat layout, meaning that all the
icons appear at the same folder level in “Other.” KDE is not affected.
•
On Linux, the installer does not run the icon installation by default; the user must run the
icon installer located in the LinuxMenu directory.
HyperWorks Desktop 14.0 Release Notes
345
Proprietary Information of Altair Engineering
HyperWorks Licensing 14.0 Release Notes
Highlights
Through its innovative HyperWorks licensing mechanism, Altair provides great value. With every
release licensing may slightly be modified to address new usage scenarios our customers may face.
Common throughout the existence of HyperWorks is the goal to maximize the functionality that can be
accessed thru a HyperWorks license.
The highlights of HyperWorks 14.0 licensing are following:
New Solver Licensing Option - HyperWorks Unlimited Solver Node Licensing
For solvers (AcuSolve, FEKO, HyperForm, HyperXtrude, MotionSolve, OptiStruct, and RADIOSS), two
different licensing options exist. The two options are the Per-Job licensing (as available since
HyperWorks 11.0) and the HyperWorks Unlimited Solver Node (Per-Node) licensing (New in
HyperWorks 14.0). Selection has to be made at purchase/renewal of license.
Adding New Product License Features
•
FEKO suite: FEKO is a powerful 3D simulation package intended for the analysis of a wide
range of electromagnetic radiation and scattering problems. The FEKO GUI applications
require 21 HWU to run. FEKO Solver follows the HyperWorks Solvers licensing
mechanisms.
•
HyperXtrude 2015 is a new CAD-based, easy to use interface for metal extrusion
analysis. Users start with a 3D CAD model of die assembly and submit a run for analysis
in just a few minutes. It draws 21 HyperWorks units to invoke this product.
•
HyperStudy Fit Excel Plugin, a curve fitting tools for MS Excel, draws 5 HyperWorks
units.
Changes in Licensing Behavior
•
Under the same user and host, HyperMesh when runing in batch mode will level the
licensing units against other HyperWorks products. In the earlier versions, HyperMesh in
batch mode stacks the units on the second instance.
•
Under the same user and host, HyperMesh BatchMesher will level the HyperWorks units
against other HyperWorks applications. In the earlier versions, the BatchMesher stack the
units.
•
Removal of the OptiStruct Check and Radioss Check license features to run HW 14.0
OptiStruct and RADIOSS.
HyperWorks Desktop 14.0 Release Notes
346
Proprietary Information of Altair Engineering
New License Utility Tool
A new GUI license utility tool has been added. This tool has the capability to perform the server
queries, unit draw lookups, borrowing set up, host ID lookup, and Hosted HWU management.
Altair License Management System Upgrade
The Altair License System has been updated to version 12.2.
Licensing Manager 12.2 or higher.
HyperWorks 14.0 requires the Altair
Resolved Issues
Resolved the issue when application took several minutes to start due to licensing lock file.
HyperWorks Desktop 14.0 Release Notes
347
Proprietary Information of Altair Engineering
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement