Reduction of Free-Edge Stress Concentration

[+] Author and Article Information
P. R. Heyliger, J. N. Reddy

Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

J. Appl. Mech 52(4), 801-805 (Dec 01, 1985) (5 pages) doi:10.1115/1.3169149 History: Received August 01, 1984; Revised March 01, 1985; Online July 21, 2009


A quasi-three dimensional elasticity formulation and associated finite element model for the stress analysis of symmetric laminates with free-edge cap reinforcement are described. Numerical results are presented to show the effect of the reinforcement on the reduction of free-edge stresses. It is observed that the interlaminar normal stresses are reduced considerably more than the interlaminar shear stresses due to the free-edge reinforcement.

Copyright © 1985 by ASME
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