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RESEARCH PAPERS

Maximal Crack Tip Shielding by Microcracking

[+] Author and Article Information
M. Ortiz, A. E. Giannakopoulos

Division of Engineering, Brown University, Providence, R.I. 02912

J. Appl. Mech 56(2), 279-283 (Jun 01, 1989) (5 pages) doi:10.1115/1.3176079 History: Received March 07, 1988; Revised August 02, 1988; Online July 21, 2009

Abstract

It is shown here that the shielding effect of a distribution of microcracks, i.e., the extent to which they alleviate the severity of a near-tip singular field, is maximized when the microcracks develop normal to the direction of maximum tension. In passing, we derive mode I asymptotic solutions for a class of anisotropic damage models.

Copyright © 1989 by ASME
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