smart technologies for safety engineering

328 Index
Control strategy (Continued)
passive, 154, 174
semi-active, 154, 158, 174, 194, 196
Control system, 167, 211
Controlled release of pressure, 188, 191, 193
Controller, 7
field programmable gate array (FPGA), 8,
186
programmable automation controller (PAC), 8
programmable logic controller (PLC), 7
Crash stiffness reduction, 207
Crashworthiness, 2, 215
Damage identification
beam, 41
experimental verification, 48
frequency domain (VDM-F), 39, 45
problem formulation, 42
random noise, 46
stiffness/mass modification, 40
time domain (VDM-T), 39, 47
truss, 45
Decision support system (DSS), 5
Delamination, 252, 263
contact layer, 54
control, 257
experimental verification, 58, 64
identification, 62, 66
modeling, 53, 56, 58
Dissipative process, 251
Distortion
electrical current, 90
force, 217–219, 223, 242
impulse force, 23
impulse virtual (strain), 23
plastic, 19, 134, 164, 223
pressure head, 72
states for nontruss structures, 41, 217
virtual (strain), 15, 217–219, 223, 242, 260
Docking facility/operation, 192, 195
Duhamel’s integral, 25
Einstein’s summation convention, 15, 38, 217
Elastic wave propagation, 38
Elasticity, 280
boundary conditions, 281
boundary integral, 281
constitutive relations (Hooke’s law), 280, 281
coupling to acoustic media, see interface
coupling, acoustic–elastic, 290
coupling to poroelastic media, see interface
coupling, poroelastic–elastic, 288
Lamé coefficients, 281
mass matrix, 298
stiffness matrix, 298
weak form, 280
Elasto poroelastic panels, 304
active behavior, 315
passive behavior, 313
piezoelectric actuators, 305, 308
single-plate panel, 306, 308
sandwich panel, 305
Electrical circuit
magnetic, 184
Electrical circuits, 85
AC analysis, 88
conductance modification, 90
DC analysis, 87
defect identification, 95, 96
transient analysis, 88
Emergency crash, 199
Energy-absorbing system (structure), 155, 205
Energy dissipator, see structural, fuse, 6
Equivalence
element forces, 18, 218, 243
inertia forces, 27, 218, 224
Experimental verification
damage identification, 48
delamination, 58, 64
impact absorption, 159, 208
PAR strategy, 262
Finite difference method (FDM), 221, 222, 232
Finite element method (FEM), 16, 25
Fluid phase of poroelastic medium, 272
compressional energy matrix, 298
displacements, 273, 276
kinetic energy matrix, 298
partial stress tensor, 274, 275
Fluid–structure interaction, 188
Folding mode, 157, 160, 205
Fredholm integral equations of the first kind, 136
ill-conditioning, 137
Frequency domain, 39, 44, 242
Galerkin model for smart vibroacoustics, 290,
293, 294, 297
discrete approximation, 294, 295
governing matrix, 296, 297
interface coupling matrix, 299
right-hand-side vector, 296, 297, 299
subdomain contribution matrices, 296, 297
system of algebraic equations, 296, 297
weak form, 293