Simulations with NX - hanserpublications.com

1 Simula ons with NXKinema cs, FEA, CFD, EM and Data numerous examples of NX 9 Reiner AnderlPeter BindeBook ISBN978-1-56990-479-4 HANSER Hanser Publishers, Munich Hanser Publica ons, Cincinna Contents, Preface, Sample Pages, IndexReiner Anderl, Peter BindeSimulations with NXReiner Anderl Peter BindeSimulations with NXKinematics, FEA, CFD, EM and Data Management. With numerous examples of NX 9 The authors:Prof. Reiner Anderl, Technische Universit t DarmstadtPeter Binde, Dr. Binde Ingenieure, Design & Engineering GmbH, WiesbadenTranslated by the authors with the help of Dimitri Albert, Jan Helge B hn, Martin Geyer and Andreas RauschnabelDistributed in North and South America by Hanser Publications 6915 Valley Avenue, Cincinnati, Ohio 45244-3029, USA Fax: (513) 527-8801 Phone: (513) 527-8977 in all other countries by Carl Hanser Verlag Postfach 86 04 20, 81631 Munich, Germany Fax: +49 (89) 98 48 09 use of general descriptive names, trademarks, etc.

2 , in this publication, even if the former are not especially identified, is not to be taken as a sign that such names, as understood by the Trade Marks and Merchandise Marks Act, may accordingly be used freely by the advice and information in this book are believed to be true and accurate at the date of going to press, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained Data is on file with the Library of Information der deutschen Bibliothek:Die Deutsche Bibliothek verzeichnet diese Publikation in der Deutschen Nationalbibliografie; detaillierte bibliografische Daten sind im Internet ber < > rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying or by any information storage and retrieval system, with-out permission in writing from the publisher.

3 Carl Hanser Verlag, Munich 2014 Copy editing: J rgen Dubau, Jan Helge B hnProduction Management: Andrea ReffkeCoverconcept: Marc M ller-Bremer, , MunichCoverdesign: Stephan R nigkTypeset, printed and bound by K sel, KrugzellPrinted in GermanyISBN 978-1-56990-479-4E-Book ISBN 978-1-56990-480-0 Preface .. 11 Introduction .. Learning Tasks, Learning Objectives, and Important Prerequisites for Working with the Book .. Work Environments .. Working with the Book .. 82 Motion-Simulation (Multibody Dynamics) .. Introduction and Theory .. 112 .1 .1 Simulation Methods .. 122 .1 .2 Restrictions .. 142 .1 .3 Classifications of MBD .. Learning Tasks on Kinematics .. 152 .2 .1 Steering Gear .. 152 .2 .2 Top-down Development of the Steering Lever Kinematics .. 332 .2 .3 Collision Check on Overall Model of the Steering System .. Learning Tasks on Dynamics.

4 592 .3 .1 Drop Test on Vehicle Wheel .. Learning Tasks on Co-Simulation .. 682 .4 .1 Balancing a Pendulum .. 683 Design-Simulation FEM (Nastran) .. Introduction and Theory .. 803 .1 .1 Linear Statics .. 813 .1 .2 Nonlinear Effects .. 833 .1 .3 Influence of the Mesh Fineness .. 853 .1 .4 Singularities .. 863 .1 .5 Eigenfrequencies .. 873 .1 .6 Heat Transfer .. 893 .1 .7 Linear Buckling .. 90 ContentsVI Learning Tasks on Design Simulation .. 903 .2 .1 Notch Stress at the Steering Lever (Sol101) .. 913 .2 .2 Temperature Field in a Rocket (Sol153) .. 1394 Advanced Simulation (FEM) .. Introduction .. 1504 .1 .1 Sol 101: Linear Static and Contact .. 1514 .1 .2 Sol 103: Natural Frequencies .. 1514 .1 .3 Sol 106: Nonlinear Static .. 1524 .1 .4 Sol 601/701: Advanced Nonlinear .. Learning Tasks on Linear Analysis and Contact (Sol 101/103).

5 1544 .2 .1 Stiffness of the Vehicle Frame .. 1544 .2 .2 Size and Calculation of a Coil Spring .. 1854 .2 .3 Natural Frequencies of the Vehicle Frame .. 1994 .2 .4 Clamping Seat Analysis on the Wing Lever with Contact .. Learning Tasks Basic Non-Linear Analysis (Sol 106) .. 2294 .3 .1 Analysis of the Leaf Spring with Large Deformation .. 2294 .3 .2 Plastic Deformation of the Brake Pedal .. Learning Tasks Advanced Nonlinear (Sol 601) .. 2494 .4 .1 Snap Hook with Contact and Large Deformation .. 2495 Advanced Simulation (CFD) .. Principle of Numerical Flow Analysis .. Learning Tasks (NX-Flow) .. 2735 .2 .1 Flow Behavior and Lift Forces at a Wing Profile .. 2736 Advanced Simulation (EM) .. Principles of Electromagnetic Analysis .. 2986 .1 .1 Electromagnetic Models .. 2996 .1 .2 Maxwell Equations .. 3006 .1 .3 Material Equations .. 3026 .1.

6 4 Model Selection .. 3036 .1 .5 Electrostatics .. 3066 .1 .6 Electrokinetics .. 3066 .1 .7 Electrodynamics .. 3066 .1 .8 Magnetostatics .. 3076 .1 .9 Magnetodynamics .. 3076 .1 .10 Full Wave (High Frequency) .. Installation and Licensing .. 308 Contents Learning Tasks (EM) .. 3106 .3 .1 Coil with Core, Axisymmetric .. 3116 .3 .2 Coil with Core, 3D .. 3266 .3 .3 Electric Motor .. 3307 Management of Analysis and Simulation Data .. Introduction and Theory .. 3517 .1 .1 CAD/CAE Integration Issues .. 3517 .1 .2 Solutions with Teamcenter for Simulation .. Learning Tasks on Teamcenter for Simulation .. 3547 .2 .1 Carrying out an NX CAE Analysis in Teamcenter .. 3557 .2 .2 Which CAD Model Belongs to which FEM Model? .. 3627 .2 .3 Creating Revisions .. 3658 Manual Analysis of a FEM Example .. Task Formulation.

7 Idealization and Choice of a Theory .. Analytical Solution .. Space Discretization for FEM .. Setting up and Solving the FEA System of Equations .. Analytical Solution Compared with Solution from FEA .. 376 Bibliography .. 379 Index .. 383 PrefaceVirtual product development has gained significant importance in particular through the integration of 3D solid based modeling, analysis and simulation. Supported by the rapid enhancement of modern information and communication technology application inte-grated virtual product development has become an essential contribution in higher engi-neering education, continuing education as well as in industrial advanced and on-the-job 2003 Technische Universit t Darmstadt has been selected and approved as PACE university and has become a part of the international PACE network. PACE stands for Partners for the Advancement of Collaborative Engineering Education and is a sponsoring program initiated by General Motors Corp.

8 (in Germany Adam Opel GmbH). PACE is driven by General Motors Corp., Autodesk, HP (Hewlett Packard), Siemens, Oracle, and further well acknowledged companies of the virtual product development branch ( ). Donations and sponsoring through the PACE partner companies has facilitated the preparation and the publishing of this publication has been developed based on cooperation between Dr. Binde Inge-nieure Design & Engineering GmbH ( ) and the Division of Computer Integrated Design within the department of Mechanical Engineering of Technische Uni-versit t Darmstadt ( ).We thank very much Mr. Haiko Klause for his support to chapter 7 and Mr. Andreas Raus-chnabel for his contribution to the Motion and FEM examples for Version 9 of the CAD system NXTM. Furthermore we are grateful for the support of Carl Hanser Verlag, mainly Mrs. Julia Stepp. A very special thank you is dedicated to Prof.

9 Dr. Jan Helge B hn who supported us through his excellent cross-reading. Last but not least we thank all readers who encouraged us to prepare this book also in wish all readers and users a successful application of the selected examples and hope-fully a beneficial knowledge acquisition usable for both, the successful graduation and the successful knowledge application during the industrial 2014 Prof. Reiner Anderl Peter Learning Tasks on Linear Analysis and Contact (Sol 101/103) 207A colored version of this figure is available at result should look as shown in the figure above. In this case, it is recommended to switch off the legend, so that the arbitrary numerical values are not visible. Save the files and close this learning task is Clamping Seat Analysis on the Wing Lever with ContactFor clamped connections (also press fits or similar) there exist analytical formulas in en-gineering handbooks [RoloffMatek].

10 However, these machine elements are usually CAD modeled by designers and integrated with in components and leads to complex geometry being used with the result that analytical design formu-las from the engineering manuals provide only very limited meaningful results. There-fore, analysis of clamped connections and similar elements have become an important application for FEA. The methodology for this will be explained in this learning gelFl gelhebel mitKlemmsitzFl gelFl gelhebelmitKlemmsitzWingwing handle withpress fitIn modal analysis, the stress profile can be specified only qualitatively .Analytical formulas no longer help .Clamping seats, clamp-ing elements or press fits are usually calcu-lated in FEA with non-linear contact .208 4 Advanced Simulation (FEM)The focus of this learning task is the use of the non-linear contact, which is required in such applications, but also in many others.