Finite Element Analysis Method Guide through ANSYS Workbench.pdf

【实例简介】

本书针对ANSYS公司的有限元分析平台Workbench ,详细介绍了软件的功能及应用。本书内容丰富且涉及领域较广，使读者在掌握软件操作的同时，也能掌握解决相关工程领域实际问题的思路与方法，并能自如地解决本领域所出现的问题。
全书分为6篇，共26章，第1篇从有限元分析着手，讲解工程问题的数学物理方程及Workbench平台的基础应用知识；第2篇以基础范例为指导，讲解在Workbench平台中进行结构静力学分析、模态分析、谐响应分析、响应谱分析、随机振动分析及瞬态动力学分析；第3篇作为进阶部分，讲解接触分析、显式动力学分析、复合材料分析、疲劳分析及压电分析；第4篇以项目范例为指导，讲解稳态热力学分析、瞬态热力学分析、计算流体动力学分析、电场分析及磁场分析。本书配套资源中的第5篇作为高级应用篇，讲解结构优化分析、线性屈曲分析、APDL编程及声学分析等；第6篇主要讲解多物理场耦合分析，包括电磁耦合、流固耦合、振动噪声等。

【实例截图】

【核心代码】

Table of Contents
Credits and Copyright ................................................................................................................................................................ 4
Preface ....................................................................................................................................................................................... 4
INTRODUCTORY ................................................................................................................................................................................ 9
General Information .................................................................................................................................................................. 9
The Design Modeler............................................................................................................................................................. 10
Basic Mouse Functionality ................................................................................................................................................... 11
Selection Filters.................................................................................................................................................................... 11
Selection Panes.................................................................................................................................................................... 12
Graphic Controls.................................................................................................................................................................. 12
Additional Mouse Controls.................................................................................................................................................. 12
Understanding Cell States.................................................................................................................................................... 13
i. Typical Cell States .................................................................................................................................................... 13
ii. Solution-Specific States............................................................................................................................................ 13
iii. Failure States ........................................................................................................................................................... 14
3D Geometry............................................................................................................................................................................ 15
Bodies and Parts .................................................................................................................................................................. 15
Boolean Operations............................................................................................................................................................. 15
Feature Type ........................................................................................................................................................................ 16
Feature Creation.................................................................................................................................................................. 17
CHAPTER_I: CHILD SWING .............................................................................................................................................................. 19
1.1 Problem Description .......................................................................................................................................................... 19
1.2 Workbench GUI.................................................................................................................................................................. 20
1.3 Preparing Engineering Data ............................................................................................................................................... 21
1.4 Create Geometric Model ................................................................................................................................................... 22
1.4.1 2D and 3D Simulations................................................................................................................................................ 22
1.4.2 More on Geometric Modeling .................................................................................................................................... 22
1.5 Divide Geometric Model Into Finite Elements .................................................................................................................. 24
1.6 Set Up Loads and Supports................................................................................................................................................ 25
1.7 Solve the Finite Element Model......................................................................................................................................... 27
1.8 Viewing the Results............................................................................................................................................................ 27
1.9 Second Part of Our Task..................................................................................................................................................... 28
CHAPTER_II: BEAM SYSTEM............................................................................................................................................................ 32
2.1 Problem Description .......................................................................................................................................................... 32
2.2 Start-Up.............................................................................................................................................................................. 33
2.3 Create Body........................................................................................................................................................................ 34
2.4 Create Cross-Section.......................................................................................................................................................... 38
2.5 Start-up “Mechanical” ....................................................................................................................................................... 39
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Table of Contents Finite Element Analysis Method
2.6 Generate Mesh .................................................................................................................................................................. 39
2.7 Specify Boundary Conditions............................................................................................................................................. 40
2.8 Specify Loads...................................................................................................................................................................... 40
2.9 Set up Solution Branch and Solve the Model .................................................................................................................... 41
2.10 View the Results .............................................................................................................................................................. 41
CHAPTER_III: PLATE ....................................................................................................................................................................... 43
3.1 Problem Description .......................................................................................................................................................... 43
3.2 Start-Up.............................................................................................................................................................................. 44
3.3 Creating the 2D Geometry Model ..................................................................................................................................... 44
3.4 Set Up Mesh Controls........................................................................................................................................................ 47
3.5 Set Up Supports, Loads...................................................................................................................................................... 48
3.6 Set Up Solution Outcome Branch ...................................................................................................................................... 48
3.7 View the Results ................................................................................................................................................................ 49
3.7.1 Perform Simulations................................................................................................................................................... 50
3.8 Modify the Model .............................................................................................................................................................. 51
3.8.1 Set Up New Supports, Loads....................................................................................................................................... 52
3.8.2 Set Up New Mesh Controls......................................................................................................................................... 52
3.8.3 View the Results ......................................................................................................................................................... 52
3.9 Structural Error .................................................................................................................................................................. 53
3.10 Finite Element Convergence............................................................................................................................................ 54
3.11 Stress Concentration........................................................................................................................................................ 55
3.11.1 View the Path Results............................................................................................................................................... 56
CHAPTER_IV: SHAFT....................................................................................................................................................................... 57
4.1 Problem Description .......................................................................................................................................................... 57
Examples before beginning our task ................................................................................................................................... 57
Shaft Description ................................................................................................................................................................. 58
4.2 Start-Up.............................................................................................................................................................................. 59
4.3 Create Body........................................................................................................................................................................ 59
4.3.1 Getting back to the Modeling..................................................................................................................................... 61
4.4 Set Up Mesh Controls........................................................................................................................................................ 62
4.5 Set Up Supports, Loads...................................................................................................................................................... 63
4.6 Set Up Solution Outcome Branch ...................................................................................................................................... 63
4.7 View the Results ................................................................................................................................................................ 64
4.7.1 Activating 3D View...................................................................................................................................................... 65
4.9 Stress Concentration Factor .............................................................................................................................................. 67
4.9.1 Hand Calculations VS Computational Calculations of Stress Concentration.............................................................. 68
Hand Calculations............................................................................................................................................................ 68
Computational Calculations............................................................................................................................................. 68
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Table of Contents Finite Element Analysis Method
Solving the Equation ........................................................................................................................................................ 68
4.10 Redefining Mesh .............................................................................................................................................................. 69
CHAPTER_V: LEVEL OF GEOMETRY .................................................................................................................................................. 70
5.1 Problem Description .......................................................................................................................................................... 70
Car Chassis Description........................................................................................................................................................ 71
i. Beam Elements......................................................................................................................................................................... 73
5.2.i Start Up ............................................................................................................................................................................ 73
5.3.i Create Body...................................................................................................................................................................... 73
5.4.i Set Up Mesh Controls...................................................................................................................................................... 76
5.5.i Set Up Supports, Loads.................................................................................................................................................... 77
5.6.i Set Up Solution Outcome Branch .................................................................................................................................... 78
5.7.i View the Results............................................................................................................................................................... 78
ii. Solid Elements......................................................................................................................................................................... 79
5.2.ii Start Up ........................................................................................................................................................................... 79
5.3.ii Create Body..................................................................................................................................................................... 79
5.4.ii Set Up Mesh Controls ..................................................................................................................................................... 81
5.5.ii Set Up Supports, Loads................................................................................................................................................... 82
5.6.ii Set Up Solution Outcome Branch ................................................................................................................................... 82
5.7.ii View the Results.............................................................................................................................................................. 83
iii. Surface Elements.................................................................................................................................................................... 84
5.2.iii Start Up .......................................................................................................................................................................... 84
5.3.iii Create Body.................................................................................................................................................................... 84
5.4.iii Set Up Mesh Controls .................................................................................................................................................... 86
5.5.iii Set Up Supports, Loads.................................................................................................................................................. 87
5.6.iii View the Results............................................................................................................................................................. 87
iv. Type of Elements Comparison ............................................................................................................................................... 88
CHAPTER_VI: TUNING FORK ........................................................................................................................................................... 89
6.1 Problem Description .......................................................................................................................................................... 89
6.2 Start Up.............................................................................................................................................................................. 90
6.3 Create Body........................................................................................................................................................................ 90
6.4 Set Up Mesh Controls........................................................................................................................................................ 93
6.5 Set Up Supports, Loads...................................................................................................................................................... 93
6.6 View the Results ................................................................................................................................................................ 95
6.7 Modify Model .................................................................................................................................................................... 96
i. Changing Material............................................................................................................................................................. 96
ii. Changing the Dimensions ................................................................................................................................................ 97