空间站展开机构的失谐动态响应分析  

Analysis on mistuned dynamic responses of space station expanding mechanism

作　　者：于霖冲[1] 

机构地区：[1]厦门理工学院机械与汽车工程学院,厦门361024

出　　处：《高技术通讯》2016年第1期24-29,共6页Chinese High Technology Letters

基　　金：863计划(2006AA04Z405);国家自然科学基金(51375412)资助项目

摘　　要：考虑了动力失谐、质量失谐和摩擦失谐三种常见失谐现象,研究了空间站展开机构的失谐动态响应。利用多柔体系统动力学方法,在机械系统动力学自动分析(ADAMS)仿真平台下建立了空间站柔性展开机构的失谐模型,并用重要度抽样方法随机抽取失谐量,然后进行机构动学仿真,得到机构的失谐动态响应并进行统计。仿真研究证明,该方法可用较少的计算时间得到柔性展开机构的失谐动态响应随机分布特性。Mistuned dynamic responses in a flexible expanding mechanism for space stations were studied with the three common mistuning phonomena of dynamic mistuning, mass mistuning and friction mistuning being considered. Firstly, a mistuned model of a flexible expanding mechanism for space stations was established under the platform of automatic dynamic analysis of mechanical systems （ADAMS） by using the method of flexible multibody dynamics, and the mistuned quantity was randomly sampled by using the importance sampling method. Then, the dynamic simulation of the flexible mechanism was conducted, and the mechanism＇ s mistuned dynamic responses were ob- tained and processed. The result of the simulation study verifies that the importance sampling method can use the less computation time to obtain the distribution characteristics of a flexible spanding mechanism ic responses. ＇ s mistuned dynam-

关 键 词：谐调机构 失谐机构 动态响应 重要度抽样方法 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程] V476.1