Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 69, Issue 7-8, Pages 983-990Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2009.01.011
Keywords
Laminate mechanics; Buckling; Failure; Multiobjective; Evolutionary algorithm
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Funding
- DGA/STTC (French Ministry of Defence)
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A Pareto-based multiobjective evolutionary algorithm is presented for stacking sequence optimization of composite structural parts. Special attention has been paid to engineering design guidelines for stacking sequence design. These guidelines are included into the formulation of the optimization problem as constraints or additional objectives. A new initialization strategy is proposed following mechanical considerations. The method is applied to the optimal design of a composite plate for weight minimization and maximization of the buckling margins under three hundred load cases that make also the originality of this work. It is shown that the introduction of new ply orientations compared to the classical 0 degrees, +/- 45 degrees and 90 degrees plies can lead to significantly improved optimal designs. (C) 2009 Elsevier Ltd. All rights reserved.
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