DESIGN OF LAMINATED PLATES FOR MAXIMUM BENDING STRENGTH
- 1 January 1985
- journal article
- research article
- Published by Taylor & Francis in Engineering Optimization
- Vol. 8 (4) , 253-263
- https://doi.org/10.1080/03052158508902492
Abstract
A procedure is proposed for maximizing the bending strength of symmetric, laminated, fiber-reinforced plates. Laminate strength is described by a failure criterion in strain space. Design variables include the fiber directions and/or the layer thicknesses. The Rayleigh-Ritz technique is used lo calculate plate deformations. Optimization is performed via a quasi-Newton method, with the initial point determined by a random jump technique. As an illustrative example, a graphite/epoxy laminate having equal thickness layers, resting on simple supports, and subject to a single concentrated force is considered. Application of the optimization procedure is found to result in a significant increase in failure load; in general, bending stiffness as well as strength is increased.Keywords
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