航天分离装置引导阶段非光滑动力学快速分析方法研究

Nonsmooth Dynamical Simulation of Astronautics Separation Device in Guided Stage

针对航天器中分离装置引导阶段非光滑动力学过程提出一种快速分析方法。运用欧拉?拉格朗日方程,推导自由、接触及碰撞状态下的动力学方程。基于LZB方法,建立描述含摩擦、接触、碰撞的分离装置引导阶段系统运动过程的一般性框架。最后,对算例进行数值模拟,结果表明缩短了仿真时间,从而证实了方法的有效性。

A new numerical method based on LZB is proposed for nonsmooth dynamics on astronautics separation device in guided stage. Using Euler-Lagrange equations and the LZB method, the general calculating framework describing the whole dynamical motion including contact, collision with friction is established. Compared with FEM simulation time, numerical simulation implies that this method is valid.