STATISTICS OF STRENGTH OF ELASTIC-BRITTLE COMPOSITE MATERIALS

M. Ostoja-Starzewski, K. Alzebdeh, I. Jasluk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationComposites and Functionally Graded Materials
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages365-371
Number of pages7
ISBN (Electronic)9780791818343
DOIs
Publication statusPublished - 1997
Externally publishedYes
EventASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Composites and Functionally Graded Materials - Dallas, United States
Duration: Nov 16 1997Nov 21 1997

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume1997-N

Conference

ConferenceASME 1997 International Mechanical Engineering Congress and Exposition, IMECE 1997 - Composites and Functionally Graded Materials
Country/TerritoryUnited States
CityDallas
Period11/16/9711/21/97

ASJC Scopus subject areas

  • Mechanical Engineering

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