Model reduction by a simplified variant of dynamic condensation

被引：23

作者：

Bouhaddi, N

Fillod, R

机构：

[1] Lab. de Mecan. Appl. R. Chaleat, Associe C.N.R.S. U.F.R. Sci. T., 25030 Besançon Cedex, La Bouloie, Route de Gray

来源：

JOURNAL OF SOUND AND VIBRATION | 1996年 / 191卷 / 02期

关键词：

Degrees of freedom (mechanics) - Dynamic response - Eigenvalues and eigenfunctions - Frequency domain analysis - Mathematical models;

D O I：

10.1006/jsvi.1996.0118

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A simplified variant of exact dynamic condensation is presented. It allows one to improve considerably the Guyan condensation method in direct dynamic analysis or in substructuring. The dynamic effects of the slave (eliminated) degrees of freedom (abr. dof) are taken into account unlike in the Guyan condensation method which later leads in most cases to errors in the computed eigenvalues and eigenvectors. The proposed variant leads to improved precision in the computed eigensolutions in a well defined frequency domain. This method is also easier to apply numerically than the Guyan technique and it can be easily adapted to dynamic substructuring. The examples presented show the usefulness of the proposed method and the performances obtained. (C) 1996 Academic Press Limited

引用

页码：233 / 250

页数：18