An iterative algorithm for analysis of coupled structural-acoustic systems subject to random excitations

• Published in: Acta mechanica Sinica Vol. 28; no. 2; pp. 458 - 467
• Main Authors: Zhao, Guo-Zhong, Chen, Gang, Kang, Zhan
• Format: Journal Article
• Language: English
• Published: Heidelberg The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences 01.04.2012
• Subjects: Classical and Continuum Physics; Computational Intelligence; Engineering; Engineering Fluid Dynamics; Research Paper; Theoretical and Applied Mechanics; 声学分析; 耦合系统; 耦合结构; 虚拟激励法; 计算成本; 迭代算法; 随机响应分析; 随机激励; Coupled structural-acoustic systems; Random excitation; Pseudo excitation method
• ISSN: 0567-7718; 1614-3116
• DOI: 10.1007/s10409-012-0032-8

This paper analyzes the random response of structural-acoustic coupled systems. Most existing works on coupled structural-acoustic analysis are limited to systems under deterministic excitations due to high computational cost required by a random response analysis. To reduce the computational burden involved in the coupled random analysis, an iterative procedure based on the Pseudo excitation method has been developed. It is found that this algorithm has an overwhelming advantage in computing efficiency over traditional methods, as demonstrated by some numerical examples given in this paper.