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RESEARCH PAPERS: Design Automation Papers

Optimization of Antisymmetric Angle-Ply Strip for Maximum Strength Including Hygrothermal Effects

[+] Author and Article Information
S. Adali

Department of Mechanical Engineering, University of Natal, Durban 4001, South Africa

H. Nissen

Institut für Mechanik I, Darmstadt Technical University, Darmstadt, West Germany

J. Mech., Trans., and Automation 109(3), 392-397 (Sep 01, 1987) (6 pages) doi:10.1115/1.3258808 History: Received October 30, 1986; Online November 19, 2009

Abstract

The transverse failure load on an antisymmetrically laminated angle-ply strip is maximized with respect to fiber volume ratio. The failure load is determined using the Tsai-Hill failure theory based on initial ply failure criterion. Hygrothermal conditions and the presence of voids in the resin are taken into account in computing the material and strength properties from micromechanical relations. Numerical results are given for graphite, boron and E-glass fibers and the effects of hot-wet conditions and voids are investigated on the efficiency and the fiber content of the optimal designs. Sensitivity of the designs to changes in the design variable is graphically studied.

Copyright © 1987 by ASME
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