| 展开式卫星天线在发射时的非线性振动分析 |
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| 引用本文： | 刘习军,陈予恕,侯书军. 展开式卫星天线在发射时的非线性振动分析[J]. 宇航学报, 2000, 21(2): 16-21 |
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| 作者姓名： | 刘习军 陈予恕 侯书军 |
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| 作者单位： | 1. 天津大学机械工程学院,天津,300072
2. 河北科技大学,石家庄,050054 |
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| 摘 要： | 本文利用有限元数值计算与解析分析相结合的方法，研究了展开式卫星天线在收拢状态（发射阶段）的非线性动力学特性，论述了平面外扭弯耦合东振（存在间隙时）及平面内渗、强亚谐共振时的非线性特性。得到了间隙对扭弯共振的影响变化曲线及产生参、强亚谐共振的条件，本文结论可作为工程设计的理论依据。
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| 关 键 词： | 非线性振动 间隙 参数激励 卫星天线 收拢状态 |
NONLINEAR VIBRATION ANALYSIS OF THE DEPLOYABLE SATELLITE ANTENNA DURING LAUNCHING STAGE |
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| Liu Xijun,Chen Yushu,Hou Shujun. NONLINEAR VIBRATION ANALYSIS OF THE DEPLOYABLE SATELLITE ANTENNA DURING LAUNCHING STAGE[J]. Journal of Astronautics, 2000, 21(2): 16-21 |
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| Authors: | Liu Xijun Chen Yushu Hou Shujun |
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| Abstract: | The FEM combined with analytical method was used to investigate the nonlinear dynamics of the deployable satellite antenna in fastened state during launching stage.The torsion and flexure in non planar coupling resonance of the antenna with the present of gap,as well as the subharmonic planar resonance of the antenna under the parametric and external exciting were analyzed.The effect of the gap on the torsion and flexure coupling resonance was investigated,and the conditions under which resonance under parametric and external exciting takes place were obtained.These conclusions provide a scientific basis for the engineering design,which is a new way to deal with the dynamics of such system. |
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| Keywords: | Nonlinear vibration Gap Parametric exciting Subharmonic resonance |
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