Modal analysis and fundamental frequency optimization for a space station’s flexible solar panel
ZANG Xu1,2,WU Song2,GUO Qiwei2,TANG Guoan1
1.Department of Aeronautics and Astronautics,Fudan University,Shanghai 200433,China;
2. Shanghai Aerospace System Engineering Research Institute,Shanghai 201109,China
Abstract:Space station’s flexible solar panel has characteristics of low frequency,dense frequencies and large static deformation due to its complicated mechanism with many links and longer expansion length. Here,taking our country’s a space station as the study object,and its finite element model was established. The flexible panel surface tension force simulation was realized through exerting thermal stress on the tensioning mechanism. The linear initial value plus nonlinear iterative correction two-step method was used to acquire temperature changes to meet the tension force design requirements. Meanwhile,the flexible panel surface tensioning state stiffness matrix obtained with the nonlinear static analysis was used to perform the modal analysis of the flexible solar panel,and the relationship among tension force,expansion mechanism’s buckling load and overall solar panel’s fundamental frequency was deduced.
臧 旭1,2,吴 松2,郭其威2,唐国安1. 空间站柔性太阳电池翼模态分析及基频优化[J]. 振动与冲击, 2019, 38(7): 246-250.
ZANG Xu1,2,WU Song2,GUO Qiwei2,TANG Guoan1. Modal analysis and fundamental frequency optimization for a space station’s flexible solar panel. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(7): 246-250.
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