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Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (5): 1065-1073.doi: 10.3969/j.issn.1000-1093.2021.05.019

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Structural Design and Optimization of Space Tether-net

SI Jiyue1, PANG Zhaojun1, YOU Meng2, FENG Guangbin1, DU Zhonghua1   

  1. (1.School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China; 2.Shanghai Aerospace Control Technology Institute, Shanghai 200233, China)
  • Online:2021-06-12

Abstract: The kinetic energy exchange between the bullets and the space tether-net makes the net rebound during the deployment, which severely affects the deployment performance of tether-net. The deployment performance of the quadrilateral net is improved by optimizing the mesh structure without changing the topological structure of tether-net. Two kinds of matrices are introduced to represent the topological structure and length of net, and the mass-spring-damper method is used to model the tether-net. An optimization strategy of mesh structure based on a genetic algorithm is proposed to optimize the effective deployment displacement. Finally, the structure and deployment performances of tether-nets with and without optimization are compared by numerical simulation. The rebound of the optimized net can be restrained and its effective deployment displacement can be improved without reducing the maximum deployment rate.

Key words: spacetether-net, meshstructure, optimization, deploymentperformance, geneticalgorithm

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