MEASUREMENT OF THE MODAL PARAMETERS OF A SPACE STRUCTURE IN ZERO-GRAVITY

被引：9

作者：

CRAWLEY, EF ^{[1
]}

BARLOW, MS ^{[1
]}

VANSCHOOR, MC ^{[1
]}

MASTERS, B ^{[1
]}

BICOS, AS ^{[1
]}

机构：

[1] MCDONNELL DOUGLAS SPACE SYST CO,DEPT ADV STRUCT & MAT,HUNTINGTON BEACH,CA 92647

来源：

JOURNAL OF GUIDANCE CONTROL AND DYNAMICS | 1995年 / 18卷 / 03期

基金：

美国国家航空航天局;

关键词：

D O I：

10.2514/3.21400

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

An analytic and experimental study of the changes in the modal parameters of space structural test articles from 1 to 0 g is presented. Deployable, erectable, and rotary modules were assembled to form three one- and two-dimensional structures in which variations in bracing wire and rotary joint preload could be introduced. The structures were modeled as if hanging from a suspension system in 1 g, and unconstrained, as if free floating in 0 g. The analysis is compared with ground experimental measurements made on a spring/wire suspension system with a nominal plunge frequency of 1 Hz and with measurements made on the Shuttle middeck, The degree of change in linear modal parameters, as well as the change in nonlinear nature of the response, is examined. Trends in modal parameters are presented as a function of force amplitude, joint preload, and ambient gravity level.

引用

页码：385 / 394

页数：10

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