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An energy-based model of longitudinal splitting in unidirectional fiber-reinforced composites

Oguni, K. and Ravichandran, G. (2000) An energy-based model of longitudinal splitting in unidirectional fiber-reinforced composites. Journal of Applied Mechanics, 67 (3). pp. 437-443. ISSN 0021-8936.

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Unidirectional fiber-reinforced composites are often observed to fail in a longitudinal splitting mode in the fiber direction under far-field compressive loading with weak lateral confinement. An energy-based model is developed based on the principle of minimum potential energy and the evaluation of effective properties to obtain an analytical approximation to the critical stress for longitudinal splitting. The analytic estimate for the compressive strength is used to illustrate its dependence on material properties, surface energy, fiber volume fraction, fiber diameter, and lateral confining pressure. The predictions of the model show good agreement with available experimental data.

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Additional Information:©2000 ASME. Received: June 9, 1999; revised: Dec. 7, 1999. This work was supported by the Office of Naval Research (Dr. Y. D. S. Rajapakse, Scientific Officer) through a grant to the California Institute of Technology.
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Record Number:CaltechAUTHORS:OGUjam00
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7495
Deposited By: Lindsay Cleary
Deposited On:27 Feb 2007
Last Modified:29 Sep 2016 23:16

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