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Type: Artigo de Periódico
Title: Concurrent Topology Optimization For Minimizing Frequency Responses Of Two-level Hierarchical Structures
Author: Vicente
WM; Zuo
ZH; Pavanello
R; Calixto
TKL; Picelli
R; Xie
Abstract: 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.
Subject: Topology Optimization
Concurrent Design
Frequency Response Function
Citation: Computer Methods In Applied Mechanics And Engineering. ELSEVIER SCIENCE SA, n. 301, p. 116 - 136.
Rights: fechado
Identifier DOI: 10.1016/j.cma.2015.12.012
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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