A METHOD FOR SELECTING MASTER DOF IN DYNAMIC SUBSTRUCTURING USING THE GUYAN CONDENSATION METHOD

被引：61

作者：

BOUHADDI, N

FILLOD, R

机构：

[1] Laboratoire de Méchanique Appliquée, Associé au CNRS, UFR Sciences et Techniques, La Bouloie, Route de Gray

来源：

COMPUTERS & STRUCTURES | 1992年 / 45卷 / 5-6期

关键词：

D O I：

10.1016/0045-7949(92)90052-2

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The choice of the master DOF defines the domain where the Guyan condensation is valid. If f(G) is the smallest eigenfrequency of all the substructures with the master DOF grounded, then the eigenfrequencies f(g) of the complete structure, calculated by condensation and assembly of the substructures, will be of acceptable precision if f(g) < 1/2f(G). The eigenmodes and the eigenfrequencies will be affected by increasingly large errors as f(g) approaches f(G). For f(g) greater-than-or-equal-to f(G) the results can be totally erroneous. It is thus very important to select the master DOF of each substructure so that f, will be a maximum. A method of selecting master DOF is proposed which allows the limits of the validity of the Guyan reduction to be defined while conserving a minimum of master DOF.

引用

页码：941 / 946

页数：6

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