Buffer protection design and simulation analysis of a high-speed impact penetrator for planetary exploration
LUO Haitao1,CHEN Shipeng2,FU Jia1,LIU Guangming1
1.State Key Laboratory of Robotics, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang 110016, China;
2.School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
Abstract：The high-speed impact penetrator dives into the interior of a planet in a collisional manner.Due to its high landing speed, the overload generated by the collision is severe.In order to ensure that the scientific instruments can work well after collision, the buffer protection must be designed.The vibration damping structure of a penetrator was designed.The nonlinear finite element technique was used to simulate the penetrating process of the penetrator, and the landing speed of the penetrator was then determined.The dynamic response and energy absorption of the main vibration-damping structure, foam-filled aluminum thin-walled tubes, under impact loads were investigated.From the analysis results, foam-filled thin-wall structures, used as an impact energy absorber, has excellent performance in terms of shock isolation efficiency and total energy absorption.
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