航天器工程2011，Vol.20Issue(3)：81-85,5.
嫦娥一号卫星定向天线动力学仿真分析
Numerical Investigation of Dynamic Response of CE-1 Directional Antenna
荣吉利 1李健 1徐天富2
作者信息
- 1. 北京理工大学宇航学院,北京,100081
- 2. 广西工学院汽车工程系,柳州,545006
- 折叠
摘要
Abstract
Numerical simulation is carried out for the modes and dynamic responses of CE-1 directional antenna with finite element analysis (FEA) softwares MSC. NASTRAN. A spring element is introduced to modeling the torsional stiffness of motors according to the characteristic of double axis driving mechanism. Both of the modes and dynamic responses of key points in antenna are calculated with the FEA software. It is found that the torsional stiffness of motors has close relation with the modes of antenna while in working status, and the critical value of torsional stiffness of motor is acquired according to the system requirements. The computational results of the modes and acceleration responses of key points of antenna are compared with the experimental results. The compared results show that the former is consistent with the latter. The finite element model is correct and effective;the relation between torsional stiffness of motors and first mode of antenna in working condition is analyzed, and the critical value of the axial stiffness in accordance with the antenna technical requirements is above 0. 035N/m. The research is valuable to relative theory research and engineering calculation.关键词
嫦峨一号卫星/定向天线/动力学分析/有限元/数值仿真/扭转弹簧Key words
CE-1/ directional antenna/ dynamic analysis/ finite element/ numerical simulatoin/ torsional spring分类
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荣吉利,李健,徐天富..嫦娥一号卫星定向天线动力学仿真分析[J].航天器工程,2011,20(3):81-85,5.
