TY - GEN
T1 - STATISTICS OF STRENGTH OF ELASTIC-BRITTLE COMPOSITE MATERIALS
AU - Ostoja-Starzewski, M.
AU - Alzebdeh, K.
AU - Jasluk, I.
N1 - Publisher Copyright:
© 1997 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 1997
Y1 - 1997
N2 - We study crack patterns and effective stress-strain response in unidirectional fiber-matrix composites subjected to out-of-plane and in-plane loading. The fibers are aligned in the longitudinal direction and arranged randomly, with no overlap, in the transverse plane. The fibers and the matrix are isotropic and elastic-brittle, which allows a parametrization of a wide range of composites in terms of a stiffness ratio and a strain-to-failure ratio. The analysis is carried out numerically using very fine two-dimensional spring networks permitting simulation of the crack initiation and propagation by sequentially removing bonds which exceed a local fracture criterion. Particular attention is given to the effects of scale and geometric randomness in these composites. We consider several “windows of observation” (scales) and study crack patterns, types of constitutive responses, and statistics of the corresponding scale dependent effective elastic stiffness and strength of such composites.
AB - We study crack patterns and effective stress-strain response in unidirectional fiber-matrix composites subjected to out-of-plane and in-plane loading. The fibers are aligned in the longitudinal direction and arranged randomly, with no overlap, in the transverse plane. The fibers and the matrix are isotropic and elastic-brittle, which allows a parametrization of a wide range of composites in terms of a stiffness ratio and a strain-to-failure ratio. The analysis is carried out numerically using very fine two-dimensional spring networks permitting simulation of the crack initiation and propagation by sequentially removing bonds which exceed a local fracture criterion. Particular attention is given to the effects of scale and geometric randomness in these composites. We consider several “windows of observation” (scales) and study crack patterns, types of constitutive responses, and statistics of the corresponding scale dependent effective elastic stiffness and strength of such composites.
UR - http://www.scopus.com/inward/record.url?scp=85127059381&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85127059381&partnerID=8YFLogxK
U2 - 10.1115/IMECE1997-0685
DO - 10.1115/IMECE1997-0685
M3 - Conference contribution
AN - SCOPUS:85127059381
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 365
EP - 371
BT - Composites and Functionally Graded Materials
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Composites and Functionally Graded Materials
Y2 - 16 November 1997 through 21 November 1997
ER -