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 |  موضوع: كتاب Simulations with NX / Simcenter 3D الإثنين 14 ديسمبر 2020, 12:06 am | |
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Simulations with NX / Simcenter 3D
2nd Edition
Kinematics, FEA, CFD, EM and Data Management
Reiner Anderl , Peter Binde
و المحتوى كما يلي :
Preface . IX
Preamble XI
1 Introduction 1
1.1 Learning Tasks, Learning Objectives, and Important Prerequisites
for Working with the Book . 4
1.2 Work Environments . 6
1.3 Working with the Book . 7
2 Motion (Multibody Dynamics) . 11
2.1 Introduction and Theory 11
2.1.1 Simulation Methods . 12
2.1.2 Restrictions 14
2.1.3 Classifications of MBD . 14
2.2 Learning Tasks for Kinematics . 16
2.2.1 Steering Gear . 16
2.2.2 Top-down Development of the Steering Lever Kinematics 34
2.2.3 Collision Check on Overall Model of the Steering System 52
2.3 Learning Tasks on Dynamics 62
2.3.1 Drop Test on Vehicle Wheel . 62
2.4 Learning Tasks on Co-Simulation 70
2.4.1 Balancing a Pendulum . 71
ContentsVI Contents
3 Design Simulation FEM (Nastran) 81
3.1 Introduction and Theory 82
3.1.1 Linear Statics . 83
3.1.2 Non-linear Effects 85
3.1.3 Influence of the Mesh Fineness . 87
3.1.4 Singularities 88
3.1.5 Eigenfrequencies . 89
3.1.6 Heat Transfer . 91
3.1.7 Linear Buckling . 92
3.2 Learning Tasks on Design Simulations 92
3.2.1 Notch Stress at the Steering Lever (Sol101) . 93
3.2.2 Temperature Field in a Rocket (Sol153) 140
4 Structural (FEM) .149
4.1 Introduction .150
4.1.1 Sol 101: Linear Statics and Contact 151
4.1.2 Sol 103: Eigenfrequencies .152
4.1.3 Sol 106: Non-linear Statics .152
4.1.4 Sol 601/701: Advanced Non-linear 152
4.2 Learning tasks on Linear Analysis and Contact (Sol 101/103) 155
4.2.1 Stiffness of the Vehicle Frame 155
4.2.2 Size and Calculation of a Coil Spring 186
4.2.3 Eigenfrequencies of the Vehicle Frame 200
4.2.4 Clamping Seat Analysis on the Wing Lever with Contact .207
4.3 Learning Tasks Basic Non-Linear Analysis (Sol 106) .230
4.3.1 Analysis of the Leaf Spring with Large Deformation .230
4.3.2 Plastic Deformation of the Brake Pedal 240
4.4 Learning Tasks Advanced Non-linear (Sol 601) .249
4.4.1 Snap Hook with Contact and Large Deformation 249
5 Thermal/Flow (CFD) 271
5.1 Principle of Numerical Flow Analysis .272
5.2 Learning Tasks (Simcenter Flow) .273
5.2.1 Flow Behavior and Lift Forces at a Wing Profile .273
6 Electromagnetics (EM) 297
6.1 Principles of Electromagnetic Analysis 298
6.1.1 Electromagnetic Models .299
6.1.2 Maxwell Equations 300 Contents VII
6.1.3 Material Equations .302
6.1.4 Model Selection .304
6.1.5 Electrostatics .306
6.1.6 Electrokinetics .306
6.1.7 Electrodynamics 307
6.1.8 Magnetostatics .307
6.1.9 Magnetodynamics 307
6.1.10 Full Wave (High Frequency) 308
6.2 Weak Formulation of EM Problems .308
6.3 Installation and Licensing 309
6.4 Learning Tasks (EM) 312
6.4.1 Coil with Core, Axisymmetric .312
6.4.2 Coil with Core, 3D 327
6.4.3 Electric Motor 331
7 Management of Analysis and Simulation Data 353
7.1 Introduction and Theory 353
7.1.1 CAD/CAE Integration Issues 353
7.1.2 Solutions with Teamcenter for Simulation 354
7.2 Learning Tasks on Teamcenter for Simulation .356
7.2.1 Carrying out an Simcenter 3D Structural Analysis in Teamcenter .357
7.2.2 Which CAD Model Belongs to which FEM Model? 365
7.2.3 Creating Revisions .367
8 Manual Analysis of a FEM Example .373
8.1 Task Formulation 373
8.2 Idealization and Choice of a Theory 374
8.3 Analytical Solution .374
8.4 Space Discretization for FEM .375
8.5 Setting up and Solving the FEA System of Equations 376
8.6 Analytical Solution Compared with Solution from FEA .378
Bibliography 381
Index 385
Index 386 Index
data model 356, 365
data protection 354
default settings 9, 68
determined degrees of freedom 15
dielectric permeability 302
dielectric relationship 302
Direct Matrix Abstraction Programming (DMAP)
151
displacement function 373
DMU 1, 3
driver 31
dynamics 25, 62
E
eddy current losses 319, 332, 351
eddy currents 305
edge subdivisions 233
eigenfrequencies 89, 200
electrical conductivity 302
electrical engineering components 297
electrical field theory 297
electrodynamics 299, 305, 307
electrokinetics 299, 305 f.
electromagnetic field analysis 150
electrostatics 299, 305 f.
enforced displacement 195
Environment 17, 24
equilibrium condition 374
equivalent stress hypothesis 125
evaluation of accuracy 93
excitation 206
F
f06 file 263
Faraday’s law 301
ferromagnetic 302
finite-volume method (FVM) 272
fixed joint 18, 23, 65
Flexible Body Dynamics 17, 25
Flexible Link 20
flow analysis 272
flow boundary conditions 283
flow surfaces 283
force 20
forced movement 339, 342
four-node tetrahedrons 128
friction 66
frictionless sliding 289
full wave 306
Full Wave (High Frequency) 299, 308
Function driver 32
Function Manager 19
G
gap elements 152
gear 19, 33
General Motion 341
geometric non-linear analysis 230
H
Harmonic driver 32
heat flux 148
heat transfer 91
hexahedral elements 128
HEX solid meshing 253
Hooke’s law 85, 374
I
induction law 301
inductivity 299, 327
inlet 286
Inline 18
installation 309 ff., 317
Interference 21
iron losses 349
item revisions 364
J
joint primitives 18
L
large displacement 87, 230, 249, 261 f.
leaf spring 230
learning tasks 4
library 64
licensing 309
lift force 293
lifting off contacts 62
linear buckling 92
linear statics 83
link 18, 26, 64
linked phase voltage 348
load transfer to FEM 21
load types 115
local mesh refinement 132
losses 319, 332, 349 Index 387
M
machine portals 187
magnetic permeability 302
magnetic relationship 302
MAGNETICS 151
magnetodynamics 297 ff., 305, 307
magnetostatics 297 ff., 304 f., 307
Marker 19
mass properties 26
master model concept 21
material equations 302
material law 375
material properties 112, 144, 282
matrix form 377
maturity tracking 354
maximum distortion energy hypothesis 125
maximum principal stress 125
maximum tensile stress 197
Maxwell’s equations 298
MBD program 12
Measure 21
memory 9
mesh connections 144
mesh fineness 87
Mesh Mating Condition 144, 209
Mesh Point 190
middle node elements 128
midsurface 161
Motion Connections 29
motion-driven systems 15
Motion Joint Wizard 23
Motor Driver 25
Moving Band 333, 341
multi-processor 8
N
named references 355, 364
Newton’s Method 262
non-linear contact 208 f.
non-linear effects 85
non-linear geometry 262
non-linear material 86
non-linear stress-strain behavior 256
notch factor 127
notch stress 93
O
ohm resistance 299, 303, 332
Ohm’s law 302
Opel RAK2 4
opening 285
Orientation 18
outlet opening 286
over-determined degrees of freedom 25
P
Parallel 18
parameterization 187
PDM 1, 3
perfect insulation 147
Phase Shift 344
phase voltage 345, 348
piece of cake 143
pivotable constraint 116
planar joint 18
Plant Input 20
Plant Output 20
plastic deformation 241
plasticity 241
point mass 202
Point on Curve 20
Point on Surface 20
Poisson’s Ratio 112
polygon body 100
polygon geometry 133, 233
Polynomial driver 32
Populate Spreadsheet 21
post-processor 121
presetting 9
press fit 207
pressure distribution 293
pretensioned bearings 186
principle of linear FEM 84
principle of the minimum of the potential energy
376
principles of electromagnetic analysis 298
processor 8
process orientation 354
R
Rack and Pinion 19
reaction force 186 f., 196
RecurDyn 9
redundant degrees of freedom 25, 42
release and change processes 354
resistance 299, 303
restrictions of MBD 14
revising 367, 370388 Index
revisions 355, 364, 368 ff.
revolute joint 18, 27
ring-element-based method 142
rivet joints 177
rotational degree of freedom 157, 179
rotational driver 13
S
Simcenter Response Analysis 151
screw 18
Simcenter/Thermal 150
Sensor 19
shape function 373, 375 ff.
sheet 163
shell elements 157
signal chart 25
Simcenter 3D 149
simulation data 353, 371
simulation data management 354
Simulation File View 99
singularities 88, 138
skin depth 305
slider 18, 59
Smart Point 19
snap hook 249
soft spring bearing 218
Sol 101 151
Sol 103 152
Sol 106 152
Sol 601 152
space discretization 375
spherical joint 18, 57
spring 12, 19
standard mesh 110
starting behavior 342
Steinmetz formula 303
stiffness matrix 377
Stitch Edge 163
stress-strain behavior 374
structural mechanics 14
super elements 203
surface roughness 284
surface subdivisions 103
Surface to Surface Contact 209
Surface to Surface Gluing 208 f.
symmetry 142
synchronization of the processes 354
system of differential equations 13
T
TC_CAE_Defining 355, 365
TC_CAE_Source 355, 365
TC_CAE_Target 355, 365
Teamcenter 354 ff., 359 ff., 364 ff., 370 f.
temperature boundary condition 146
temperature field 140
temperature gradient 148
ten-node tetrahedral elements 128
thermodynamic problems 150
time-dependent travel path 259
time step 291
time step size 275
TMG 150
tolerances 43
toolbar 17
top-down method 36
torque 20
Trace 21
transport equations 272
traverse path 259
truss theory 374
turbulence model 276
U
underdetermined 29
undetermined degrees of freedom 15
universal joint 18
V
vents 285
version levels 354
virtual product development 1 ff.
von Mises 125
W
wake space 296
wall thickness 165
weak formulation 308
weak springs 216
Whitney elements 315
without redundancy 25
Y
Young’s Modulus 112
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تاريخ التسجيل : 21/07/2023
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