桁架式火星探测器的着陆缓冲特性分析
Characteristics Analysis of Landing Buffer in the Truss Type Mars Lander

着陆缓冲机构是着陆器实现行星探测软着陆的关键部位之一，它的缓冲性能直接关系到着陆器是否能安全地在行星表面实现软着陆。根据某院提供的火星着陆器模型，在三维建模软件中建立着陆器的合理简化模型，为了提高分析着陆器软着陆过程冲击响应的准确性，采用MSC公司的Patran/Dytran有限元软件，用瞬态动力学的方法对着陆器的缓冲性能进行分析。仿真结果与试验数据十分吻合，着陆器的缓冲和传力性能良好。因此，采用拉杆缓冲的桁架式火星着陆器是可行的，仿真结果与试验数据也为今后的火星探测提供了参考。
Landing buffer is one of key parts to realize a soft landing on planet. Its cushioning performance is directly related to the success or failure of the soft landing on the planet surface. According to the given model of the mars lander, a reasonable simplified model of the lander is established in a three dimensional modeling software. In order to improve the analyzing accuracy of of the impact response in this landing process, the buffer performance of the lander is analyzed by the method of transient dynamics using a finite element software Patran/Dytran (MSC company). The simulation results are in agreement with the experimental data. Therefore, it is feasible to use the truss type mars lander. The simulation results and experimental data also provide references for future Mars exploration.