Journal
ENGINEERING OPTIMIZATION
Volume 43, Issue 10, Pages 1079-1094Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/0305215X.2010.535818
Keywords
laminated composite; optimization; RBDO; safety factors; PSO
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This article aims at optimizing laminated composite plates taking into account uncertainties in the structural dimensions. As laminated composites require a global optimization tool, the Particle Swarm Optimization (PSO) method is employed. A new Reliability Based Design Optimization (RBDO) methodology based on safety factors is presented and coupled with PSO. Such safety factors are derived from the Karush-Kuhn-Tucker optimality conditions of the reliability index approach and eliminate the need for reliability analysis in RBDO. The plate weight minimization is the objective function of the optimization process. The results show that the coupling of the evolutionary algorithm with the safety-factor method proposed in this article successfully performs the RBDO of laminated composite structures.
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