RESIDUAL FLEXIBILITY TEST METHOD FOR VERIFICATION OF CONSTRAINED STRUCTURAL MODELS

被引：17

作者：

ADMIRE, JR

TINKER, ML

IVEY, EW

机构：

[1] Structural Analysis Division, NASA Marshall Space Flight Center, Huntsville, AL

[2] Payload Dynamics and Loads Branch, NASA Marshall Space Flight Center, Huntsville, AL

来源：

AIAA JOURNAL | 1994年 / 32卷 / 01期

关键词：

Dynamics;

D O I：

10.2514/3.11963

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

A method is described for deriving constrained modes and frequencies from a reduced model based on a subset of the free free modes plus the residual effects of neglected modes. The method involves a simple modification of the MacNeal and Rubin component mode representation to allow development of a verified constrained (filed-base) structural model. Results for two spaceflight structures having translational boundary degrees of freedom show quick convergence of constrained modes using a measurable number of free-free modes plus the boundary partition of the residual flexibility matrix. This paper presents the free-free residual flexibility approach as an alternative test/analysis method when fixed-base testing proves impractical.

引用

页码：170 / 175

页数：6

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