Numerical Study of Damage Growth in Particulate Composites

[+] Author and Article Information
Y. W. Kwon

Mechanical Engineering Department, Naval Postgraduate School, Monterey, CA 93943

C. T. Liu

Phillips Laboratory, Edwards AFB, CA 93524

J. Eng. Mater. Technol 121(4), 476-482 (Oct 01, 1999) (7 pages) doi:10.1115/1.2812404 History: Received January 15, 1999; Revised May 17, 1999; Online November 27, 2007


A numerical study was conducted to simulate and predict damage initiation and growth around the crack tip crack tip in particulate composite specimens made of hard particles embedded in a soft rubber-like matrix material. Therefore, damage evolution in the matrix material around crack tips was investigated. The progressive damage was modeled using a micro/macro-approach which combined two levels of analyses like the micro-level and the macro-level analyses. Damage description was undertaken at the microlevel using a simplified three-dimensional unit-cell model and an isotropic continuum damage theory. The numerical study examined both him and thick specimens with a short or long edge crack to understand the effects of specimen thickness and crack size on the damage initiation, growth, and saturation. Numerical results were compared with experimental data.

Copyright © 1999 by The American Society of Mechanical Engineers
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