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论文类型：期刊论文

发表时间：2010-03-01

发表刊物：NOISE CONTROL ENGINEERING JOURNAL

收录刊物：SCIE、EI、Scopus

卷号：58

期号：2

页面范围：132-144

ISSN号：0736-2501

摘要：Acoustic design optimization of structures subjected to random excitations is investigated in this paper. In this work, a Pseudo excitation method (PEM), an accurate and highly efficient algorithm series for structural stationary random response analysis, is extended to deal with random acoustic radiation problems. A boundary element method (BEM) and a finite element method (FEM) are combined with the PEM to calculate acoustic radiation from random excited structures. A design optimization model is presented, in which the pressure power spectral density (PSD), mass of the structure or eigenvalues of the structure is used as an objective function or constraint function. The thickness of the structure is used as a design variable. Based on acoustic radiation sensitivity analysis and structural sensitivity analysis, the design optimization model is solved with sequential linear programming. Numerical examples of sensitivity analysis and acoustic design optimization are given to demonstrate the effectiveness of the proposed method. (C) 2010 Institute of Noise Control Engineering.