A reduction method for structure-acoustic and poroelastic-acoustic problems using interface-dependent Lanczos vectors

被引：30

作者：

Davidsson, P ^{[1
]}

Sandberg, G ^{[1
]}

机构：

[1] Lund Univ, Div Struct Mech, SE-22100 Lund, Sweden

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2006年 / 195卷 / 17-18期

关键词：

structure-acoustic; poroclastic; Biot's theory; component mode synthesis;

D O I：

10.1016/j.cma.2005.02.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A reduction method is proposed for analysing structure-acoustic and poroelastic-acoustic problems within a finite element framework. This includes systems consisting of an acoustic fluid domain coupled to a flexible structural domain and/or a porous sound absorbing material domain. The studied problem is reduced by dividing the system into a number of physical subdomains. A set of basis vectors is derived for each of these subdomains, including both normal modes and interface-dependent vectors that take account of the influence of connecting subdomains. The method is verified in two numerical examples using the proposed method for both solving the structure-acoustic eigenvalue problem and performing a frequency response analysis in an acoustic cavity with one wall covered by porous material. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1933 / 1945

页数：13

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