A novel prediction technique for the steady-state dynamic analysis of coupled vibro-acoustic systems

被引：0

作者：

Desmet, W ^{[1
]}

van Hal, B ^{[1
]}

Sas, P ^{[1
]}

Vandepitte, D ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Mech Engn, Div PMA, B-3001 Heverlee, Belgium

来源：

EUROPEAN CONFERENCE ON SPACECRAFT STRUCTURES, MATERIALS AND MECHANICAL TESTING, PROCEEDINGS | 2001年 / 468卷

关键词：

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A new prediction technique has been developed for the steady-state dynamic analysis of coupled vibro-acoustic systems. The technique is based on the indirect Trefftz method, in which the dynamic field variable expansions are exact solutions of the governing dynamic equations. This paper presents the basic principles of the prediction technique and applies it for the modelling of a three-dimensional plate-cavity coupling problem. This application illustrates that a high accuracy is obtained from substantially smaller models, compared to the finite element method, since an approximation is induced only in the representation of the boundary conditions. Moreover, a comparison between the new technique and the conventional finite element method reveals the beneficial convergence rate of the new technique, in that it provides accurate prediction results with a substantially smaller computational effort. In this way, the new technique can be applied up to much higher frequencies than the conventional finite element method.

引用

页码：155 / 160

页数：6