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论文类型：期刊论文

发表时间：2016-08-01

发表刊物：COMPUTERS & STRUCTURES

收录刊物：SCIE、EI、Scopus

卷号：172

页面范围：71-80

ISSN号：0045-7949

关键字：Periodic beam; Topology optimization; Sensitivity analysis; Homogenization method; Commercial software

摘要：A topology optimization method is developed for microstructure design of heterogeneous periodic beam structure aiming at its extreme or specified effective stiffness. The effective stiffness is calculated using a FEM formulation of asymptotic homogenization method for heterogeneous periodic beam. Sensitivity of stiffness to the density design variable is derived analytically based on the solution of unit cell problems under corresponding generalized strain fields. Implementation of optimization procedure is generalized to take full advantage of commercial FEM software capabilities, with several examples presented to demonstrate its effectiveness. It is shown here the proposed method is extendible to periodic truss beam design. (C) 2016 Elsevier Ltd. All rights reserved.