Analysis of Orthogonally Cracked Laminates Under Tension

[+] Author and Article Information
Z. Hashin

Dept. of Solid Mechanics, Materials and Structures, Tel-Aviv University, Tel-Aviv, Israel 69978

J. Appl. Mech 54(4), 872-879 (Dec 01, 1987) (8 pages) doi:10.1115/1.3173131 History: Received January 02, 1987; Online July 21, 2009


The problems of stiffness reduction and stress analysis of cross-ply fiber composite laminates, where all plies are cracked in fiber directions, are treated by a variational method on the basis of the principle of minimum complementary energy. The Young’s modulus obtained is a strict lower bound but is expected to be close to the true value on the basis of experience with a previous analysis. Approximate values of Poisson’s ratio and internal stresses have been obtained. The latter reveal important tendencies of continued failure by delamination.

Copyright © 1987 by ASME
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