MSC.Marc and MSC.Marc Mentat Release Guide Version 2003 Copyright 2003 MSC.Software Corporation All rights reserved. Printed in U.S.A. Corporate Europe MSC.Software Corporation MSC.Software GmbH 2 MacArthur Place Am Moosfeld Santa Ana, CA 92707 81829 München, GERMANY Telephone: (714) 540-8900 Telephone: (49) (89) 431 987 0 Fax: (714) 784-4056 Fax: (49) (89) 436 1716 Asia Pacific Worldwide Web MSC Japan Ltd. www.mscsoftware.com Entsuji-Gadelius Building 2-39, Akasaka 5-chome Minato-ku, Tokyo 107-0052, JAPAN Telephone: (81) (3) 3505 0266 Fax: (81) (3) 3505 0914 Part Number: MA*V2003*Z*Z*Z*DC-REL Disclaimer THE CONCEPTS, METHODS, AND EXAMPLES PRESENTED IN THE DOCUMENTATION ARE FOR ILLUSTRATIVE AND EDUCATIONAL PURPOSES ONLY, AND ARE NOT INTENDED TO BE EXHAUSTIVE OR TO APPLY TO ANY PARTICULAR ENGINEERING PROBLEM OR DESIGN. USER ASSUMES ALL RISKS AND LIABILITY FOR RESULTS OBTAINED BY THE USE OF THE COMPUTER PROGRAMS DESCRIBED HEREIN. IN NO EVENT SHALL MSC.SOFTWARE CORPORATION BE LIABLE TO ANYONE FOR ANY SPECIAL, COLLATERAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES ARISING OUT OF, RESULTING FROM, OR IN CONNECTION WITH USE OF THE CONTENTS OR INFORMATION IN THE DOCUMENTATION. MSC.SOFTWARE CORPORATION ASSUMES NO LIABILITY OR RESPONSIBILITY FOR ANY ERRORS THAT MAY APPEAR IN THE DOCUMENTATION. THE DOCUMENTATION IS PROVIDED ON AN “AS-IS” BASIS AND ALL EXPRESS AND IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID. MSC.SOFTWARE CORPORATION RESERVES THE RIGHT TO MAKE CHANGES IN SPECIFICATIONS AND OTHER INFORMATION CONTAINED IN THE DOCUMENTATION WITHOUT PRIOR NOTICE. Trademarks MSC, Dytran, MARC, and Patran are registered trademarks of MSC.Software Corporation or its subsidiaries in the United States and/or other countries. MSC., MSC.Dytran, MSC.Marc, and MSC.Patran are trademarks of MSC.Software Corporation. NASTRAN is a registered trademark of the National Aeronautics and Space Administration. MSC.Nastran is an enhanced pro- prietary version developed and maintained by MSC.Software Corporation. All other trademarks are the property of their respec- tive owners. Third Party Software Program Credits METIS is copyrighted by the regents of the University of Minnesota. NT-MPICH is developed by Lehrstuhl für Betriebssysteme der RWTH Aachen. Copyright 1992-2003 Lehrstuhl für Betriebssysteme der RWTH Aachen. Government Use Use, duplication, or disclosure by the U.S. Government is subject to restrictions as set forth in FAR 12.212 (Commercial Computer Software) and DFARS 227.7202 (Commercial Computer Software and Commercial Computer Software Documentation), as applicable. CONTENTS MSC.Marc and MSC.Marc Mentat Release Guide Contents ■ List of the New Functionalities, 2 ■ Description of the New Functionalities, 4 ■ Examples of New Functionality, 70 ■ List of Defects Fixed in this Release, 72 ■ List of Known Problems in this Release, 80 ■ Troubleshooting Tips, 85 ■ Web Updates for Bug Fixes, 91 ■ List of Build and Supported Platforms, 92 ■ List of Dropped Platforms, 95 ■ Important Notes, 96 ■ Platform Specific Notes, 99 ■ Security, 103 MSC.Nastran for Windows Release Guide MSC.Marc and MSC. Marc Mentat Release Guide ■ List of the New Functionalities ■ Description of the New Functionalities ■ Examples of New Functionality ■ List of Defects Fixed in this Release ■ List of Known Problems in this Release ■ Troubleshooting Tips ■ Web Updates for Bug Fixes ■ List of Build and Supported Platforms ■ List of Dropped Platforms ■ Important Notes ■ Platform Specific Notes ■ Security The release of MSC.Marc 2003 family of products broadly encompasses the following objectives: • Major new enhancements in several areas in both solver and GUI capabilities • Substantial improvements in quality – several defects in the previous versions have been fixed • Notable increase in robustness of analysis • Notable solver speed improvements 2 List of the New Functionalities MSC.Marc 2003 I. List of the New Functionalities There are significant enhancements in various key technology areas in addition to improvements in existing functionality in the MSC.Marc family of products. The extent of the improvements is fairly substantial and spans a broad range of industries. A list of new features for both the solver and graphical user interface is given below. Details can be found in the following section for the enhancements and modifications in both the MSC.Marc and MSC.Marc Mentat 2003 versions. MSC.Marc 2003 1. Analysis Performance Improvements, 4 A. Direct Sparse Solver Improvements, 4 B. Sparse Iterative Solver Improvements, 5 C. Other Enhancements for Memory Reduction, 5 D. Improvements in Parallel Analysis, 5 E. Improvements in Thermal Radiation Calculations, 5 F. Improved Convergence in Heat Transfer Analysis, 5 G. Analysis Procedure Improvements, 6 2. Contact, 7 A. Thermal Contact, 7 B. True Quadratic Contact, 8 C. Beam Contact, 9 D. Contact Improvements, 10 E. Scaling of Rigid Surface, 10 F. Separation Controls, 10 3. Electrical/Electronics, 11 A. Piezoelectric Analysis, 11 B. Coupled Electrical-Thermal-Mechanical (Joule-Mechanical Analysis), 12 C. Improvements in Electromagnetics, 13 4. Element Technology, 14 A. New Reduced Integration Thick Shell Element, 14 B. Rebar Element Enhancement, 15 C. Continuum Composite Element Enhancement, 15 D. Beam Element Enhancements, 16 E. Gas Filled Cavities, 16 5. Material Models, 18 A. Anisotropic Plasticity, 18 B. Shape Memory Alloys, 19 C. Thermo-Mechanical Extensions to Gasket, 21 D. Implicit Creep, 22 E. Chaboche Model for Viscoplasticity, 24 List of the New Functionalities 3 MSC.Marc Mentat 2003 6. Automatic Time Stepping Scheme Enhancements, 26 7. Steady State Rolling of Tires, 28 8. Multi-point Constraints, 30 A. INSERT Option, 30 B. General Analysis Enhancements – Nonlinear Springs, 30 C. MSC.Nastran Rigid Body Elements, 32 9. Global Remeshing and Adaptive Meshing, 33 A. Automatic Global Remeshing with Tetrahedral Elements, 33 B. Adaptive Meshing, 35 10. Machining, 36 11. Miscellaneous, 38 A. Axisymmetric to 3-D Analysis Enhancements, 38 B. Forming Limit Diagram (FLD) and Principal Engineering Strains, 38 C. Large Strain Support for Fracture Mechanics, 40 D. Super-Plastic Forming (SPF) Enhancements, 40 MSC.Marc Mentat 2003 12. MSC.Marc Mentat Menu Enhancements, 42 13. MSC.Marc Mentat Preprocessing Enhancements, 45 A. Attach, 45 B. New Combined Mesh/Geometry Commands, 47 C. Modifications to Mesh Generation Commands, 49 D. Modifications to the Automatic Meshers, 52 E. New Automatic Meshers from MSC.Patran, 53 F. Model Parameters, 54 G. Multidimensional Tables, 55 H. New Table Style Input, 58 I. Referencing Tables with Multiple Independent Variables, 59 J. Passing a Table Formula to MSC.Marc; Extrapolation Flag, 60 K. Electromagnetic Boundary Conditions, 61 L. Harmonic Boundary Conditions, 61 M. Nodal Ties, Servo Links, and Springs, 62 N. Enhancement of Domain Decomposition, 63 O. Job Submission, 64 P. Python, 64 Q. Miscellaneous Changes, 65 14. MSC.Marc Mentat Postprocessing Enhancements, 67 A. MPEG and AVI Animation, 67 B. Post Procedure File, 68 C. Merge Contact Model Files, 69 D. Generalized XY-Plot, 69 4 Description of the New Functionalities Analysis Performance Improvements II. Description of the New Functionalities 1. Analysis Performance Improvements There are a few major areas where the performance has been substantially improved for large problems in MSC.Marc 2003 release: A. Direct Sparse Solver Improvements Storage improvements have been made in the multifrontal sparse solver which should affect all problems. Furthermore, the default optimizer is now Optimize 11 which results in major speed and memory improvements over the previous optimizers. In Core Storage 400000000 350000000 300000000 250000000 Optimize 11 200000000 Nest.Diss. Size 150000000 Min.Degree 100000000 50000000 0 1234567891011 Model Size Figure 1: Comparison of Memory Usage Matrix Solution Wall Time 800 600 Optimize 11 400 Nest.Diss. Time Min.Degree 200 0 1234567891011 Size Figure 2: Comparison of Matrix Solution Time Description of the New Functionalities 5 Analysis Performance Improvements B. Sparse Iterative Solver Improvements The sparse iterative solver using Incomplete Cholesky preconditioner has been rewritten to achieve significant improvements in speed. This has been achieved for single as well as parallel analysis as witnessed in Case 1: Sparse Iterative Solver Enhancements of the New Features Guide 2003. C. Other Enhancements for Memory Reduction There have been two major changes in the treatment of memory for large problems, namely: • The first is a general rewrite of the memory management scheme and contact data structure to improve memory allocation in large problems, with or without contact. • The second is a contact memory reduction option for cases where only small sliding takes place. In particular for three-dimensional models e.g. automotive engine blocks with large amounts of contact surface data, the memory savings can be significant. Since no significant nonlinear contact behavior is taken into account with this option it does not support friction and coupled behavior. This option can be activated through the CONTACT option or in MSC.Marc Mentat via the button “LINEAR CONTACT WITH REDUCED STORAGE” in JOBS→MECHANCIAL→CONTACT CONTROL→INITIAL CONTACT menu. D. Improvements in Parallel Analysis METIS based domain decomposer has been implemented in MSC.