Copyright ® 2000 MSC.Software Introduction to MSC.Patran PAT301 Course Notes October 2003 MSC.Software Corporation United States MSC.Patran Support Tel: - презентация

1 Copyright ® 2000 MSC.Software Introduction to MSC.Patran PAT301 Course Notes October 2003 MSC.Software Corporation United States MSC.Patran Support Tel: Fax: Tokyo, Japan Tel: Fax: Munich, Germany Tel: (+49) Fax: (+49) MacArthur Place Santa Ana, CA 92707, USA Tel: (714) Fax: (714) Web: Part Number: P3*V2004*Z*Z*Z*SM-PAT301-NT1

2 Copyright ® 2000 MSC.Software DISCLAIMER 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 text are for illustrative and educational purposes only, and are not intended to be exhaustive or to apply to any particular engineering problem or design. MSC.Software Corporation assumes no liability or responsibility to any person or company for direct or indirect damages resulting from the use of any information contained herein. User Documentation: Copyright 2003 MSC.Software Corporation. Printed in U.S.A. All Rights Reserved. This notice shall be marked on any reproduction of this documentation, in whole or in part. Any reproduction or distribution of this document, in whole or in part, without the prior written consent of MSC.Software Corporation is prohibited. MSC and MSC. are registered trademarks and service marks of MSC.Software Corporation. NASTRAN is a registered trademark of the National Aeronautics and Space Administration. MSC.Nastran is an enhanced proprietary version developed and maintained by MSC.Software Corporation. MSC.Patran is a trademark of MSC.Software Corporation. All other trademarks are the property of their respective owners.

3 Copyright ® 2000 MSC.Software TABLE OF CONTENTS Section Page 1.0 Overview ………………………….………………………………………………………..…………………………..1-1 Course Objectives……………………………………………………………………………………………… Workflow in MSC.Patran ………………………………………………………………………………………..1-5 Case Study: Engine Piston Head ………………………………………………………………………….1-7 Where to go for Help …………………………………………………………………………………………….1-27 Where to get Training ……………………………………………………………………………………………1-28 Workshop 1 Piston Head Analysis……………………………………………………………………… MSC.Patran Graphical User Interface and Files ……………………………………………………………2-1 Windows vs. Unix GUI ………………………………………………………………………………………….2-3 The Main Menu ………………………………………………………………………………………………….2-7 Application Forms ……………………………………………………………………………………………….2-10 Entity Picking …………………………………………………………………………………………………….2-13 On-line Help ………………………………………………………………………………………………………2-21 Basic Patran Files ……………………………………………………………………………………………… Case Study: GUI ……………………………………………………………………………………………2-24 Workshop 2 Cantilevered Plate………………………………………………………………………… Geometric Modeling …….………………………………………………….……………………………………..3-1 Basics and Definitions ………………………………………………………………………………………… Case Study: Topology of Simple Solid ……………………………………………………………………3-6 Importing and Exporting Geometry …………………………………………………………………………….3-25 MSC.Patran Geometry Application …………………………………………………………………………….3-43 Geometric Entities-Point …………………………………………………………………………………………3-51 Geometric Entities-Curve ……………………………………………………………………………………… Case Study: Parametric Curves ………………………………………………………………………… Workshop 3 Frame Model Creation Using Curves, and Analysis……………………………………..3-70

4 Copyright ® 2000 MSC.Software TABLE OF CONTENTS Section Page 3.0 Geometric Modeling (Continued) …….………………………………….……………………………………..3-1 Geometric Entities-Surface …………………………………………………………………………………… Case Study: Trimmed Surfaces with Different Parent Surfaces ………………………………………3-77 Case Study: Verify Surface Boundaries …………………………………………………………………3-94 Workshop 4 Midsurface Extraction Example……………………………………………………………3-101 Geometric Entities-Solid ……………………………………………………………………………………… Case Study: Adding Solids ………………………………………………………………………………3-112 Workshop 5 Frame Surfaces Creation………………………………………………………………… Geometric Entities-Coordinate Frame ……………………………………………………………………….3-121

5 Copyright ® 2000 MSC.Software TABLE OF CONTENTS (cont.) SectionPage 4.0 Meshing ………………………………….…………………………………………………………………………….4-1 Introduction ………………………………………………………………………………………………………….4-3 Meshing Basics and Definitions …………………………………………………………………………………..4-9 Iso Mesher ……………………………………………………………………………………………………………4-12 Case Study: IsoMesh Mesh Paths ………………………………………………………………………….4-18 Paver Mesher ……………………………………………………………………………………………………….4-22 Tet Mesher ………………………………………………………………………………………………………… Sweep Mesher ……………………………………………………………………………………………………….4-30 MSC.Patran Finite Element Application ………………………………………………………………………… Mesh Seeding ……………………………………………………………………………………………………….4-40 Meshing Curves………………………………………………………………………………………………………4-46 Meshing Surfaces…………………………………………………………………………………………………….4-47 Case Study: Effect of Added Vertex on Paver …………………………………………………………….4-48 Workshop 6 Frame Surfaces Model Analysis…………………………………………………………… Associating Points and Curves …………………………………………………………………………………….4-56 Case Study: Effect of Association on Paver ……………………………………………………………….4-59 Isomeshing Solids ……………………………………………………………………………………………………4-77 Tetmeshing Solids ……………………………………………………………………………………………………4-78 Case Study: Tetmesh with Adjacent Mesh for Patran Native B-rep Solids …………………………….4-84 TetMesh Parasolid Solid Assemblies………………………………………………………………………………4-93 Case Study: Tetmesh with Adjacent Mesh for Parasolid Solids …………………………………………4-97 Workshop 7 Parasolid Solid Example………………………………………………………………………4-107 Sweep Meshing …………………………………………………………………………………………………… Equivalencing ……………………………………………………………………………………………………… Verification ……………………………………………………………………………………………………………4-125 Non-congruent Meshes and Mesh Refineement …………………………………………………………………4-135 Case Study: Create a Surface from 2D Mesh …………………………………………………………… Case Study: Improve Tetmesh using Modify ……………………………………………………………… Editing Node………………………………………………………………………………………………………… Meshing Summary……………………………………………………………………………………………………4-174 Workshop 8 Various Methods of Solid Meshing……………………………………………………………4-175

6 Copyright ® 2000 MSC.Software TABLE OF CONTENTS (cont.) SectionPage 5.0 Viewing and Display …………………………………………………………………………………………………5-1 Viewing ……………………………………………………………………………………………………………….5-3 Display ……………………………………………………………………………………………………………… Case Study: Plot/Erase Example …………………………………………………………………………… Groups ………………………………………………………………………………………………………………….6-1 Introduction to Groups ……………………………………………………………………………………………..6-3 Group Terminology……………………………………………………………………………………………………6-5 Creating a Group………………………………………………………………………………………………………6-7 Displaying a Group……………………………………………………………………………………………………6-9 Modifying Groups…………………………………………………………………………………………………… Moving or Copying Between Groups……………………………………………………………………………… Setting Current Group…………………………………………………………………………………………………6-12 Transforming Groups………………………………………………………………………………………………….6-13 Deleting Groups……………………………………………………………………………………………………….6-15 Case Study: Transform Groups Using Translate and Move ……………………………………………….6-17 Workshop 9 Anchor Geometry Creation…………………………………………………………………….6-28 Workshop 10 Tetmeshing Anchor Geometry………………………………………………………………..6-28

7 Copyright ® 2000 MSC.Software TABLE OF CONTENTS (cont.) SectionPage 7.0 Fields ……………………………………………………………………………………………………….………… Load and Boundary Conditions ………………………………………………………………………………..8-1 Load and Boundary Conditions …………………………………………………………………………….……….8-3 Load Cases …………………………………………………………….…………………………………………… Workshop 11 Anchor Loads and Boundary Conditions…………………………………………………… Materials ……………………………………………………………………………………………………………… Element Properties …………………………………………………………………………………………………10-1 Element Properties ……………………………………………………………………………………………………10-3 Case Study: Meshing with Quads and Bars …………………………………………………………………10-14 Workshop 12 Cantilevered Beam Using 1D or 2D Elements, and Analysis…………………………… Analysis Setup ……………………………………………………………………………………………………… 11-1 Workshop 13 Anchor Material and Element Properties……………………………………………………11-12 Workshop 14 Anchor Analysis……………………………………………………………………………… Lists …………………………………………………………………………………………………………………… Viewports …………………………………………………………………………………………………………….13-1 Workshop 15 Using Lists and Groups……………………………………………………………………… Results …………………………………………………………………………………………………………………14-1 Results Introduction………………………….……………………………………………………………………… Quick Plot………………………………………………………………………………………………………………14-11 Results Processing Procedure………………………………………………………………………………………14-13 Plot Options, Vector………………………………………………………………………………………………… Case Study: Vector Component in Local Coordinate System…………………………………………..… Plot Options, Fringe………………………………………………………………………………………………… Create Results…………………………………………………………………………………………………………14-42 Case Study: Using PCL Expressions ………………………………………………………………………

8 Copyright ® 2000 MSC.Software TABLE OF CONTENTS (cont.) SectionPage 14.0 Results (Continued) ……..…………………………………………………………………………………………14-1 Create a Range…………………………………………………………………………………………… Results Template………………………………………………………………………………………… Workshop 16 Connecting Rod Using 1D and 2D Elements…………..…………………………14-70 XY Plot………………………………………………………………………………………………………………… Result Animation ……………………………………………………………………………………………………15-1 Results animation ………………………………………………………………………………………………….…15-3 Setting-up Non-Quick Plot Animation……………………………………………………………………………….15-9 Case Study: Post Processing Transient Response ……………………………………………………… Workshop 17 Box Beam With Transient Load…………………………………………………………… Insight ………………………………………………………………………………………………………………….16-1 Workshop 18 Post Processing With Insight…………………………………………………………………16-23 Workshop 19 Connecting Rod Using 2D Elements……………………………………………………… File Management ………………………………………………………………………………………………… Workshop 20 Connecting Rod Using 3D Elements From Sweep……………………………………… Brief Introduction to the Finite Element Method ……..…………………………………………………..18-1