基于杆-锥式对接机构柔性杆碰撞振动特性探究

摘要

对于中小型航天器空间对接,可以考虑采用柔性对接杆来替代缓冲机构实现对接碰撞的缓冲功能.首先利用有限元理论建立杆-锥式空间对接碰撞的简化模型,分别通过频谱分析、模态分析与碰撞力波形分析等方法,探讨了柔性杆在对接过程中的碰撞振动规律.%In medium or small-sized spacecrafts' docking process, it's feasible to adopt a flexible probe for the probe-cone docking mechanism instead a buffer to reduce the docking impact force. A simplified probe-cone docking impact model was built using finite element method and the impact vibration modes of the probe in docking process were analyzed based on the model. By the modal analyzsis of elastic beam and the phase-frequency analysis of impact force and transverse velocity, the relationship between impact and vibration modes of probe was provided.