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共振 (存在间隙时 )及平面内参、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 。
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.
出处
《宇航学报》
EI
CSCD
北大核心
2000年第2期16-21,共6页
Journal of Astronautics
关键词
非线性振动
间隙
参数激励
卫星天线
收拢状态
Nonlinear vibration\ Gap\ Parametric exciting\ Subharmonic resonance
