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TECHNICAL PAPERS

The Kink Band Mechanism for the Compressive Failure of Fiber Composite Materials

[+] Author and Article Information
R. M. Christensen

Lawrence Livermore National Laboratory, Stanford University

S. J. DeTeresa

Lawrence Livermore National Laboratory, University of California, P. O. Box 808, Livermore, CA 94551-9900

J. Appl. Mech 64(1), 1-6 (Mar 01, 1997) (6 pages) doi:10.1115/1.2787273 History: Received October 30, 1995; Revised August 26, 1996; Online October 25, 2007

Abstract

A simple strain-based yield/failure criterion for fiber composite materials is incorporated into a kink band analysis of compressive failure. Under realistic conditions of fiber misalignment the analysis predicts compressive failure at load levels about one–fifth of the ideal value, and with kink band inclinations of about 20 deg. Some parametric variations of the relevant physical variables are given in simple graphical forms, and comparisons are made with newly obtained micrographs of kink bands.

Copyright © 1997 by The American Society of Mechanical Engineers
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