Page 424 - Mechanics Analysis Composite Materials

Subject index 409
standard types of specimens 95 stress concentration 77, 171, 201, 205,
static boundary conditions 48 336-337
static strength 79 stress concentration in the matrix 96
statically admissible stress field 49 stress diffusion 16, 171
statically and kinematically admissible stress diffusion in fibers 65
stress and strain fields 94 stress diffusion in the vicinity of damaged
Statics of Solids 230 or broken fibers 181
stiffness 1 stress formulation 48, 69
stiffness coefficients 45, 150-1 51, 164, stress function 69
217, 219, 225, 230, 232, 235, 237, 247, stress intensity 128, 130, 137, 292
251, 313 stress invariants 126-1 27
stiffness coefficients of a homogeneous stress ratio 338
layer 236 stress relaxation 319, 325
stiffness coefficientsof a laminate 238 stress resultants and couples 227-229
stiffness coefficientsof an orthotropic stress space 139, 272
layer 237 stress tensor 285
stiffness degradation 339 stress transformation 32
stiffness matrix 46, 218 stress wave 343
stiffness of composite materials 339 stress-strain curve 3, 5, 100, 124-125,
stiffnessesof the degraded layer 176 144, 162, 200
stitching 21 5 stress-strain diagram of the cross-ply
strain 2, 37 layer 174
strain concentration factor 106 stress-strain diagram 3-4, 7, 10, 12,
strain energy 3, 129, 143, 234 17, 64, 79, 97, 99, 133, 182, 209.
strain energy of fibers 109 319
strain energy of the matrix 109 stresses in laminates 254
strain intensity 129 stresses in the principal material coordi-
strain interaction 279 nates 164
strain transformation 39 stretching ability 209
strain-displacement equations 38, 48, 53, structural failure criteria 273
202, 230 structural materials I
strength analysis 271, 293 structural nonlinearity 189
strength criterion 271, 284, 287, structural strength criteria 274, 281
289-290 structure of uniform stress 382
strength deviation 63 structure of uniform stress and
strength dispersion 64 strain 368
strength matrix 289 sun radiation 318
strength of a composite bundle of surface cracks 62
fibers 66, 96 surface tractions 29, 31, 42, 51
strength of a dry bundle of fibers 66, 96 symmetric f45" angle-ply laminate 369
strength of a unidirectional ply 64 symmetric kq5 angle-ply laminate 370
strength of laminates 271 symmetric &4 angle-ply layer 310
strength of the optimal laminate 378 symmetric angle-ply layer 186
strength scatter 63 symmetric laminates 245, 247
strength tensor 285-286, 291 symmetric system of helical ribs 212
strength variation 65 symmetry conditions 143
stress 2, 29, 33 symmetry conditions for shear
stress analysis of the matrix in the vicinity stresses 32
of fibers 91 synthetic fibers 6