Contact modeling and simulation analysis on the non-explosive separation device of a spacecraft

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (6) : 298-306.

LI Xuemei1， WANG Meng1,2， LIU Yanhao1， PAN Yi1， SUN Beibei1

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Abstract

To ensure the reliable connection and separation of the separation device in the launching process of spacecraft, the contact dynamics and separation process of a certain type of non-explosive separation device was researched. The non-explosive separation device used shape memory alloy spring as the driving source. The contact model was analyzed and the contact parameters was determined according to the contact theory. The dynamic simulation model was established and simulation was calculated. The simulation results show that the separation shock is less than 300g, which is consistent with experimental results. The recovery time of SMA spring in separation device, the preload force and spring stiffness were researched for the influence of the separation process. The results show that the recovery time and preload force have opposite effects on the separation device of shock response, the values must be taken into account comprehensively. Among the spring parameters, the stiffness of the segment separation spring and the bolt separation spring have the greatest influence on the separation shock.

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Separation device / Contact and impact / Multibody dynamics / Simulation

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LI Xuemei1， WANG Meng1,2， LIU Yanhao1， PAN Yi1， SUN Beibei1. Contact modeling and simulation analysis on the non-explosive separation device of a spacecraft[J]. Journal of Vibration and Shock, 2023, 42(6): 298-306

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