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Author(s): Carlos Conceição António
Title: Optimal design of hybrid composite structures exploring species conservation concept in genetic search
Issue Date: 2009
Abstract: Aiming to solve the optimal design of hybrid composite structures an approach based on Hierarchical GeneticAlgorithm (HGA) and Species Conservation Technique (SCT) is proposed addressing the optimal stackingsequence and material topology as a multimodal optimization problem. More than applying similar concepts usedin Parallel Genetic Algorithm (PGA), a hierarchical relationship between sub-populations is introduced togetherwith an evolutionary philosophy based on the species conservation concept. A cooperation between elitistevolutionary strategies based on fitness at sub-population level and the species conservation concept isimplemented. Using appropriate selection criteria for migration flows and adopting an age structure in the processof deletion of individuals then equilibrium between elitism and need for species conservation is reached. Resultsshow that the procedure for species control is effectively able to allow multiple optimal solutions and guaranteesthe sub-population diversity. The identification of a high quality set of solutions will provide an insight of thespace design suggesting alternative and innovative solutions for robust design optimization of compositestructures.
Subject: Ciências Tecnológicas, Outras ciências da engenharia e tecnologias
Technological sciences, Other engineering and technologies
Source: WCSMO - Eighth World Congress on Structural and Multidisciplinary Optimization
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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