航天器工程2013，Vol.22Issue(1)：49-53,5.DOI:10.3969/j.issn.1673-8748.2013.01.010
航天器随机振动设计载荷有限频段法研究
Research on Limited Frequency Bandwidth Method of Spacecraft Design Load for Random Vibration
摘要
Abstract
To solve the problem that design load of spacecraft based on full frequency bandwidth is often on the high side, a basic theory of limited frequency bandwidth is analyzed by random vibration theory. Under white noise, the limited frequency bandwidth method is compared with equivalent displacement method. With single-degree-of-freedom, the result of the former method is close to the latter method's, and with two-degree-of-freedom mass-spring model and satellite model, the design load is higher than the latter method's. With the example of a satellite, random vibration response is analyzed. The results show that convergence frequencies of different structures and directions are different, so the upper limited frequency is decided by the convergence frequency of structure response.关键词
航天器/随机振动/设计载荷/有限频段法/加速度等效/位移等效Key words
spacecraft/ random vibration/ design load/ limited frequency bandwidth method/equivalent acceleration/ equivalent displacement分类
航空航天引用本文复制引用
张玉梅,韩增尧,邹元杰..航天器随机振动设计载荷有限频段法研究[J].航天器工程,2013,22(1):49-53,5.基金项目
国家重大科技专项工程 （）
