Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/101191
Author(s): Carlos Alberto Conceição António
Title: Multiobjective optimization for sustainable design of fibre reinforced polymer composite structures
Issue Date: 2015
Abstract: One approach for decreasing costs in lightweight structures using (FRP) composite materials adopting hybrid constructions is proposed. In this approach expensive and high-stiffness materials are used together with inexpensive and low-stiffness material. The optimal design procedure considers sizing, topology and material selection addressed in a multiobjective design optimization (MDO) framework, which considers minimum weight or cost and minimum strain energy. The trade-off between the objectives, depending on given stress, displacement and buckling constraints imposed on composite structures, is searched. Ply angles and ply thicknesses of shell laminates, the cross section dimensions of stiffeners and the variables related to material distribution are considered as design variables. A multiobjective memetic algorithm (MOMA) searching the Pareto-optimal front based on non-dominance concepts is proposed. MOMA is an evolutionary algorithm based on Darwin principles together with learning procedures using Dawkins concepts. MOMA applies multiple learning procedures exploring different cultural transmission rules. The approach is based on multiple populations, species conservation, migration, self-adaptive, local search, controlled mutation, age control and features-based allele's statistics. MOMA is promising in MDO with the aim of obtaining lightweight design solutions for composite structures and indicating alternative optimal designs what might be very important for the designers. (c) Civil-Comp Press, 2015.
Subject: Ciências Tecnológicas, Ciências da engenharia e tecnologias
Technological sciences, Engineering and technology
Scientific areas: Ciências da engenharia e tecnologias
Engineering and technology
URI: https://hdl.handle.net/10216/101191
Source: CC 2015 - Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing
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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