Substructuring technique: improvement by means of singular value decomposition (SVD)

被引：24

作者：

Gialamas, TP ^{[1
]}

Tsahalis, DT ^{[1
]}

Otte, D ^{[1
]}

Van der Auwaraer, H ^{[1
]}

Manolas, DA ^{[1
]}

机构：

[1] Univ Patras, Dept Chem Engn, Lab Fluid Mech & Energy, GR-26500 Patras, Greece

来源：

APPLIED ACOUSTICS | 2001年 / 62卷 / 10期

关键词：

substructuring technique; FRF; dynamic behavior; singular value decomposition;

D O I：

10.1016/S0003-682X(00)00095-5

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

There are two classical methods used for the determination of the dynamic behaviour of a coupled structure: (a) analytical modeling and (b) experimental modal analysis. However, both these methods fail to give acceptable results due to various reasons: An approach which overcomes the majority of the problems encountered, is a substructuring technique which makes use of the Frequency Response Functions (FRFs) of the substructures. Nevertheless, many studies have revealed a number of problems encountered during the realization of this technique. The present paper addresses one of them : the distortion of the final results due to numerical instabilities introduced by the use of the direct inversion of a matrix, as it is required by the mathematical formulation of the substructuring technique. Specifically, the application of a pseudoinversion by means of Singular Value Decomposition (SVD) is introduced and the resulting improvement of the results is presented. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1211 / 1219

页数：9