Stability analysis method of asteroid detector attached to gravel layer
WANG Hui1, DONG Yang1, DING Jianzhong1, LIU Xueao1, WANG Chunjie1,2
1.School of Mechanical Engineering and Automation, Beihang University, Bejing 100191, China;
2.State Key Lab of Virtual Reality Technology and Systems, Beihang University, Beijing 100191, China
Abstract：The solid attachment of the asteroid probe on the surface of the star is the key to the mission. This paper takes a certain type of asteroid detector as the research object, combines the discrete element method with the multi-body dynamics simulation method, and establishes a coupled simulation model that considers the effect of the buffer mechanism and the impact of the gravel layer at the same time to analyze the asteroid detection The adhesion stability of the device on the gravel layer. Then, the comprehensive evaluation parameters of the attachment stability of the detector are given, and on this basis, the coupling simulation model is used to analyze the attachment stability of the detector according to the typical working conditions. At a specific vertical velocity, sample points are selected through the full factorial experimental design method, and based on the calculation results of the coupled simulation model, Using third-order polynomials to establish surrogate models of performance evaluation parameters for different gravel layer slopes, detector horizontal speeds and yaw angles. Using the surrogate model to determine the attachment stability boundary of the detector, the stability boundary change trend under different working condition parameters is analyzed. Finally, according to the results of the stability boundary analysis, three groups of severe attachment conditions are determined, and on this basis, the influence of the vertical velocity on the attachment stability is analyzed. The research method proposed in this paper has certain guiding significance for the smooth development of my country's future asteroid exploration missions.
Key words: asteroid detection; multi-body dynamics; discrete element; coupled simulation; stability analysis
王辉1，董洋1，丁建中1，刘学翱1，王春洁1，2. 小行星探测器附着碎石层的稳定性分析方法[J]. 振动与冲击, 2022, 41(23): 129-139.
WANG Hui1, DONG Yang1, DING Jianzhong1, LIU Xueao1, WANG Chunjie1,2. Stability analysis method of asteroid detector attached to gravel layer. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(23): 129-139.
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