MSC.Marc® and MSC.Marc® Mentat® Release Guide Version 2005 Copyright 2004 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 Software Japan Ltd. www.mscsoftware.com Shinjuku First West 8F 23-7 Nishi Shinjuku 1-Chome, Shinjuku-Ku Tokyo 160-0023, JAPAN Telephone: (81) (3) 6911 1200 Fax: (81) (3) 6911 1201 Part Number: MA*V2005*Z*Z*Z*DC-REL This document, and the software described in it, are furnished under license and may be used or copied only in accordance with the terms of such license. Any reproduction or distribution of this document, in whole or in part, without the prior written authorization of MSC.Software Corporation is strictly prohibited. MSC.Software Corporation reserves the right to make changes in specifications and other information contained in this document without prior notice. The concepts, methods, and examples presented in this document are for illustrative and educational purposes only and are not intended to be exhaustive or to apply to any particular engineering problem or design. THIS DOCUMENT 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 logo, MSC, MSC., MSC/, MSC.ADAMS, MSC.Dytran, MSC.Marc, MSC.Patran, ADAMS, Dytran, MARC, Mentat, and Patran are trademarks or registered trademarks of MSC.Software Corporation or its subsidiaries in the United States and/or other countries. NASTRAN is a registered trademark of NASA. MSC.Nastran is an enhanced proprietary version developed and maintained by MSC.Software Corporation. LS-DYNA is a trademark of Livermore Software Technology Corporation. All other trademarks are the property of their respective owners. This software may contain certain third-party software that is protected by copyright and licensed from MSC.Software suppliers. METIS is copyrighted by the regents of the University of Minnesota. NT-MPICH is developed by Lehrstuhl für Betriebssysteme der RWTH Aachen. Copyright 1992-2004 Lehrstuhl für Betriebs- systeme der RWTH Aachen. 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 ■ I. List of the New Functionalities, 2 ■ II. Description of the New Functionalities, 4 ■ III. List of Defects Fixed in this Release, 69 ■ IV. List of Known Problems in this Release, 83 ■ V. Troubleshooting Tips, 88 ■ VI. Web Updates for Bug Fixes, 94 ■ VII. List of Build and Supported Platforms, 95 ■ VIII. List of Dropped Platforms, 98 ■ IX. Important Notes, 99 ■ X. Platform Specific Notes, 102 ■ XI. Security, 106 MSC.Nastran for Windows Release Guide MSC.Marc and MSC. Marc Mentat Release Guide The release of MSC.Marc 2005 family of products broadly encompasses the following objectives: • Major new enhancements in several areas in both solver and GUI capabilities • Substantial increase in robustness of analysis • Improvements in quality – several defects in the previous versions have been fixed • Notable solver speed improvements 2 List of the New Functionalities MSC.Marc 2005 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 substantial, spanning a range of industries. A list of new features for both the solver and graphical user interface is given below. For example, Chapter 11 of MSC.Marc Volume E: Demonstration Problems contains several of the finite element benchmarks recommended by the National Agency for Finite Element Methods and Standards (NAFEMS). All of the details can be found in the subsequent sections for the enhancements and modifications in both the MSC.Marc and MSC.Marc Mentat 2005 versions. MSC.Marc 2005 1. Contact Analysis, 4 A. Transformation Enhancements, 4 B. Tying (Multi Point Constraint) Enhancements, 4 C. Improvements in Separation Behavior, 5 D. Deformable Contact, 5 E. True Quadratic Contact, 6 F. Parallel Processing, 6 G. Friction Modeling Improvements, 7 H. Contact Analysis in Electrostatic-Structural Simulations, 8 I. Contact Analysis for Diffusion Simulations, 8 J. Radiation to the Environment, 9 K. Use of Tables, 9 L. Adding and Changing Rigid Surfaces, 9 2. Auto Step Enhancements, 10 A. New Quasi-Static Damping Algorithm, 10 B. Scale Step Adjustment, 10 C. Damping to avoid Exit 3015, 11 3. Analysis Speed, Memory, and Scalability Enhancements, 12 A. Single Input File in Parallel Analysis, 12 B. Improved Speed And Memory, 13 4. Element Technology, 15 A. New Elements for Magnetostatics Analysis, 15 B. Rebar Enhancement, 17 5. Ease-of-Use and General Enhancements, 18 A. PRE STATE, 18 B. Structural Zooming Analysis, 20 C. Point Load Follower Forces, 21 D. Table Input, 23 E. Geometrically Applied Boundary Conditions, 27 F. Fracture Mechanics, 29 List of the New Functionalities 3 MSC.Marc Mentat 2005 6. Global Remeshing and Adaptive Meshing, 30 A. Loads and Boundary Conditions in Global Remeshing, 30 B. Parallelized Local Adaptive Meshing, 32 7. Manufacturing, 33 A. Machining, 33 B. Welding, 35 8. Materials, 38 A. Shape Memory Materials, 38 B. Generalized Strain Energy Function Model, 39 C. Large Strain Viscoelastic Foam Model, 40 D. Hypoelastic Analysis, 41 9. Multiphysics and Thermal Enhancements, 42 A. Radiation Enhancements, 42 B. Coupled Electrostatic-Structural Enhancements, 45 C. Diffusion Analysis, 48 10. Multipoint Constraint Enhancements, 49 A. General Section Constraint, 49 B. Large Rotation RBE3, 51 C. INSERT Enhancement, 52 11. Product Integration, 53 A. MSC.Adams – MSC.Marc Enhancements, 53 12. Changes in Defaults in MSC.Marc, 55 MSC.Marc Mentat 2005 13. Modeling Shell and Membrane Structures, 56 14. Menus, 62 15. New-Style Radiation, 63 16. New-Style Tables Input, 63 17. Changed Defaults, 64 18. MSC.Marc Mentat 2005 Preprocessing Enhancements, 64 19. MSC.Marc Mentat 2005 Postprocessing Enhancements, 68 4 Description of the New Functionalities MSC.Marc 2005 II. Description of the New Functionalities MSC.Marc 2005 1. Contact Analysis The contact capability in MSC.Marc has been significantly modified to improve the accuracy of the solution, increase the robustness, and reduce the computational costs. The contact capability has been expanded to be applicable to coupled electrostatic-structural and diffusion simulations. Furthermore, you can use the table driven input procedure in conjunction with the contact option to increase the flexibility without the need to write user subroutines. This section highlights some of these enhancements. For more details, select a topic through the help table. A. Transformation Enhancements The TRANSFORMATION option in MSC.Marc (to define local coordinate systems) has been completely rewritten. This lets you specify the coordinates and the degrees of freedom in the same way as MSC.Nastran (cord1c, cord1r, cord1s, cordrc, cord2r, cord2s). It also now supports local coordinate systems for nodes coming into contact and for nodes involved in the INSERT option. MSC.Marc Input TRANSFORMATION model definition option has been enhanced to accommodate the transformation related changes. Help User’s Guide Thermo-Mechanical Analysis of Cylinder Head Joint with Quadratic Contact B. Tying (Multi Point Constraint) Enhancements In the previous versions of MSC.Marc, the order in which the ties were applied was fixed and determined by the order in which they were given in the input file. MSC.Marc internally uses ties for several options including TYING, SERVO LINK, INSERT, CONTACT, RBE2, RBE3. For MSC.Marc 2005 using MPC-CHECK in the parameter section of the input file, you can apply the multi point constraints in a correct order by forcing an automatic renumbering of all tying equations. This makes the combination of the above options much more powerful. For example, you can now use the load controlled body node as a tied node in a servo link. Additionally, you can write the tying forces and moments to the post file as a nodal vector. Description of the New Functionalities 5 MSC.Marc 2005 Figure 1: Advanced Analysis Options Submenu MSC.Marc Input The tying enhancements are currently activated using MPC-CHECK in the parameter section of the MSC.Marc input file. Help Volum e C MPC-CHECK C. Improvements in Separation Behavior In some contact problems, within an increment the phenomenon of repeated touching and separating of a node can occur. To avoid an excessive number of iterations, in MSC.Marc version 2003, this repeated touching and separating was allowed only five times per increment per node after which such a node was kept in contact, irrespective of the final contact normal force. Consequently, contact forces could be locally wrong. To solve this kind of problems in MSC.Marc 2005, improved logic has been implemented for nodes which may repeatedly come into contact during the Newton-Raphson recycle process within an increment. Due to this modification, you may observe a very small amount of penetration at the end of an increment. This improved behavior is only available in combination with the iterative penetration checking procedure for which it will be automatically activated. D. Deformable Contact Although there are various options to influence the way in which the contact constraint equations are set up for deformable contact (CONTACT NODE, CONTACT TABLE, and EXCLUDE), the final set of constraint equations may still not be optimal. This may happen, for example, in cases of self-contact or remeshing.