Energy Release Rates in a Fiber-Reinforced Strip

[+] Author and Article Information
L. F. Mannion

Department of Mathematics and Computer Science, St. John’s University, Jamaica, NY 11439

J. Appl. Mech 54(2), 399-402 (Jun 01, 1987) (4 pages) doi:10.1115/1.3173026 History: Received December 18, 1985; Revised July 14, 1986; Online July 21, 2009


This paper discusses Mode I fracture of a semi-infinite crack in a strip of fiber-reinforced material. The crack is opened by point forces applied to the crack faces. The problem is solved using two models for fiber reinforcement; these models are known as the inextensible and idealized theories and are both based on simplification of the equations of orthotropic elasticity. In the inextensible theory the problem is solved by conformal mapping while the idealized solution involves only stress resultants on free bodies. The energy release rates are calculated from the solution within each model and are then compared.

Copyright © 1987 by ASME
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