Concurrent topology optimization for minimizing frequency responses of two-level hierarchical structures

Autor(es)

Vicente, W. M. ^[1] ; Zuo, Z. H. ^[2] ; Pavanello, R. ^[1] ; Calixto, T. K. L. ^[1] ; Picelli, R. ^[1] ; Xie, Y. M. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Fac Mech Engn, Dept Computat Mech, Rua Mendeleyev 200, BR-13083860 Campinas - Brazil

^[2] Autodesk Australia Pty Ltd, 259 Colchester Rd, Kilsyth South, Vic 3137 - Australia

^[3] RMIT Univ, Sch Civil Environm & Chem Engn, Ctr Innovat Struct & Mat, GPOB 2476, Melbourne, Vic 3001 - Australia

• Tipo de documento: Artigo Científico
• Fonte: COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING; v. 301, p. 116-136, APR 1 2016.
• Citações Web of Science: 27

Resumo

This paper presents a concurrent topology optimization methodology for minimizing the frequency responses of multiscale systems composed of macro and micro phases. Although there is existing research on the topology optimization of structures and optimization of the materials for frequency responses, topology optimization approaches considering both scales simultaneously are relatively limited. The methodology proposed here aims to apply the bi-directional evolutionary structural optimization (BESO) method to find the optimum layout on both macro and micro scales of the structure, with the objective of minimizing the frequency response in the macro structure. For this coupled system, it is assumed that the macro structure is composed of a periodic material whose effective properties are obtained using the homogenization theory. The designs of the macro and micro structures are conducted simultaneously. The homogenized elasticity matrix used in the finite element analysis of the macro structure is obtained from considering the layout of the micro structure. A series of numerical examples are presented to validate the optimization procedure and to demonstrate the effectiveness and the efficiency of the proposed method. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/08293-7 - CECC - Centro de Engenharia e Ciências Computacionais
• Beneficiário: Munir Salomao Skaf
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 11/09730-6 - Otimização Estrutural Evolucionária em Problemas de Interação Fluido-Estrutura
• Beneficiário: Renato Picelli Sanches
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 13/20022-9 - Otimização topológica evolucionária de sistemas poro-elasto-acústicos
• Beneficiário: William Martins Vicente
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado