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d r te lo i n Co Pr ll Fu in
Finite Element Simulations with ANSYS Workbench 18 ®
Theory, Applications, Case Studies
Huei-Huang Lee
SDC P U B L I C AT I O N S
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Contents
Contents Preface
4
Chapter 1 Introduction 1.1 1.2 1.3 1.4 1.5 1.6
9
Case Study: Pneumatically Actuated PDMS Fingers 10 Structural Mechanics: A Quick Review 24 Finite Element Methods: A Concise Introduction 35 Failure Criteria of Materials 40 Review 47 Appendix: An Unofficial History of ANSYS 51
Chapter 2 Sketching
56
2.1 2.2 2.3 2.4 2.5 2.6 2.7
92
W16x50 Beam 57 Triangular Plate 70 More Details 81 M20x2.5 Threaded Bolt Spur Gears 97 Microgripper 103 Review 107
Chapter 3 2D Simulations 3.1 3.2 3.3 3.4 3.5 3.6
109
Triangular Plate 110 Threaded Bolt-and-Nut 123 More Details 138 Spur Gears 149 Structural Error, FE Convergence, and Stress Singularity Review 168
Chapter 4 3D Solid Modeling 4.1 4.2 4.3 4.4 4.5 4.6
Beam Bracket 171 Cover of Pressure Cylinder 177 Lifting Fork 188 More Details 195 LCD Display Support 201 Review 205
170
155
1
2
Contents
Contents
Chapter 5 3D Simulations 5.1 5.2 5.3 5.4 5.5
207
Beam Bracket 208 Cover of Pressure Cylinder 217 More Details 225 LCD Display Support 229 Review 234
Chapter 6 Surface Models 6.1 6.2 6.3 6.4
Bellows Joints 237 Beam Bracket 247 Gearbox 254 Review 267
Chapter 7 Line Models 7.1 7.2 7.3 7.4
309
Flexible Gripper 310 Triangular Plate 321 Review 327
Chapter 9 Meshing 9.1 9.2 9.3 9.4
269
Flexible Gripper 270 3D Truss 281 Two-Story Building 293 Review 307
Chapter 8 Optimization 8.1 8.2 8.3
236
328
Pneumatic Fingers 329 Cover of Pressure Cylinder 344 Convergence Study of 3D Solid Elements Review 363
351
Chapter 10 Buckling and Stress Stiffening 10.1 10.2 10.3 10.4
Stress Stiffening 366 3D Truss 377 Beam Bracket 381 Review 385
Chapter 11 Modal Analysis 11.1 11.2 11.3 11.4 11.5
Gearbox 388 Two-Story Building 393 Compact Disk 400 Guitar String 408 Review 415
387
365
2
Contents
Chapter 12 Transient Structural Simulations 417 12.1 12.2 12.3 12.4 12.5 12.6
Basics of Structural Dynamics 418 Lifting Fork 427 Harmonic Response Analysis:Two-Story Building Disk and Block 446 Guitar String 454 Review 464
Chapter 13 Nonlinear Simulations 13.1 13.2 13.3 13.4 13.5
Basics of Nonlinear Simulations Translational Joint 479 Microgripper 493 Snap Lock 506 Review 522
14.1 14.2 14.3 14.4
Basics of Nonlinear Materials Belleville Washer 534 Planar Seal 551 Review 566
Basics of Explicit Dynamics High-Speed Impact 575 Drop Test 585 Review 597
Index
599
524
525
Chapter 15 Explicit Dynamics 15.1 15.2 15.3 15.4
466
467
Chapter 14 Nonlinear Materials
569
439
568
3