点击次数：

论文类型：期刊论文

发表时间：2009-07-01

发表刊物：STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION

收录刊物：SCIE、EI、Scopus

卷号：39

期号：1

页面范围：105-113

ISSN号：1615-147X

关键字：Sensitivity analysis; Stochastic excitation; Coupled structural-acoustic systems; Pseudo excitation method

摘要：A development for computing the acoustic pressure spectral density and its sensitivity of coupled structural-acoustic systems subjected to stochastic excitation is presented. Previous work in the area of structural-acoustic response considered systems subject to deterministic excitations. The response computation depends on the excitation; therefore, new methods are developed to account for stochastic excitation. The structural-acoustic response is calculated using finite element methods and stochastic analysis techniques. An accurate and highly efficient algorithm series for structural stationary random response analysis, pseudo excitation method (PEM) is used. Numerical examples are given to demonstrate the effectiveness of the methods and the program.