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Bounds on the Strength Distribution of Unidirectional Fiber Composites

Conference ·
OSTI ID:757266

Failure mechanisms under tensile loading of unidirectional fiber composites comprising of Weibull fibers embedded in a matrix are studied using Monte-Carlo simulations. Two fundamental mechanisms of failure are recognized--stress concentration driven failure and strength driven failure. It is shown that the cumulative distribution function for composite strength predicted by the stressconcentration-driven failure and strength-driven failure form apparent upper and lower bounds respectively and also that failure mechanism switches from one to the other as fiber strength variability changes.

Research Organization:
Los Alamos National Lab., NM (US)
Sponsoring Organization:
US Department of Energy (US)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
757266
Report Number(s):
LA-UR-99-1348
Country of Publication:
United States
Language:
English

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