摘要
本文中提出了一种修改的Benfield－Hruda法，它改善了主体部件模态基的独立性条件，允许主体部件的自由-自由状态模态参数直接参与综合过程，因而可以直接利用实验模态分析的结果，这使它有可能在星／箭耦合分析中得到应用。算例表明，只要选取适当数量的基向量，本文方法的精度可满足工程要求。但是该法的综合效率低于B－H法，尚待改进。
A revised Benfield-Hruda method is presented in this paper. The method improves the independence condition of modal base of main component and allows the free-free modal parameters of it totake part in synthesis, ther fore the results of test modal analysis can be used in modal synthesis directly.This characteristic makes the method be possible of being applied in the payload/launch vehicle couplinganalysis. It is also shown in examples that the accuracy for engineering application can be satisfied if appropriate number of base vectors are selected. But the coupling efficiency of it is lower than that of B-Hmethod, further improvement is required.
出处
《强度与环境》
北大核心
1995年第1期9-13,共5页
Structure & Environment Engineering
关键词
星箭对接
结构动力分析
模态分析
Satellite-rocket docking, Dynamic structural analysis, Modal analysis
