月球探测器着陆冲击动力学相似性的虚拟仿真研究

Virtual Simulation of Impact Dynamics Similarity for Lunar Probe Landing

以某型月球探测器为对象,推导了月球探测器动力学相似性和相关物理量的相似常数。通过改变月球探测器着陆初始条件,采用对试验数据进行后续处理来模拟月球重力场的方法,开展全机全柔性软着陆非线性动力学相似性仿真分析。通过机体顶板中心点加速度响应的仿真与试验,结合重力场对计算结果影响的分析,证明了探测器组合缓冲性能分析方法的准确性和有效性。

According to a type of lunar probe,the dynamics similarity and the similar constant of related physical quantities are derived.By changing the lunar probe landing initial conditions and using the test data to simulate the lunar gravity field,the nonlinear dynamics similarity of the machine is simulated and analyzed.Through the simulation and experiment of the acceleration response of the body roof center,combining with the analysis of the influence of gravity field on calculation result,the accuracy and effectiveness of analysis method for lunar probe combination buffer performance are proved.