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论文类型：期刊论文

发表时间：2010-08-01

发表刊物：INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

收录刊物：SCIE、EI、Scopus

卷号：47

期号：16

页面范围：2097-2114

ISSN号：0020-7683

关键字：Design optimization of composites; Laminated composite plates; Discrete material optimization; Sound power radiation; Structural-acoustic analysis and optimization

摘要：This paper deals with vibro-acoustic optimization of laminated composite plates. The vibration of the laminated plate is excited by time-harmonic external mechanical loading with prescribed frequency and amplitude, and the design objective is to minimize the total sound power radiated from the surface of the laminated plate to the surrounding acoustic medium. Instead of solving the Helmholtz equation for evaluation of the sound power, advantage is taken of the fact that the surface of the laminated plate is flat, which implies that Rayleigh's integral approximation can be used to evaluate the sound power radiated from the surface of the plate. The novel Discrete Material Optimization (DMO) formulation has been applied to achieve the design optimization of fiber angles, stacking sequence and selection of material for laminated composite plates. Several numerical examples are presented in order to illustrate this approach. (C) 2010 Elsevier Ltd. All rights reserved.