Load-Bearing Performance and Structure Optimization for Kagome Grid Satellite Cylinder Made by Filament Winding
SUN Shouzheng1 , SUN Tianfeng2 , CHEN Weiqiang2 , FAN Dongxing1 , HAN Zhenyu1 , FU Hongya1
(1. Harbin Institute of Technology, Harbin 150001, China; 2. Beijing Satellite Manufacturing Factory Co., Ltd., China Academy of Space Technology, Beijing 100094, China)
Abstract：Cylinder is the main bearing component of a satellite, which plays a major role in the load-bearing performance of the whole structure. Due to lightweight and high strength, Kagome grid satellite cylinder made by filament winding is commonly used in satellite cylinder. However, the structural parameters are coupled with each other in the design of the grid structure, and the effect of the parameters on the load-bearing performance of the cylinder is unclear. In this paper, the structure optimization of the Kagome grid satellite cylinder is studied. The finite element method is used to analyze the load-bearing performance of the cylinder under the working conditions for the satellite. Furthermore, the relative independence design conception regarding spiral rib and ring rib is put forward. Combining the parametric modeling strategy, the effect of each structural parameter on the load-bearing performance is obtained. With the loadbearing performance and mass as the main optimization objectives, the structural parameters of the cylinder are optimized using the multi-objective genetic algorithm. Also, the strength and buckling performance of the optimal structure are analyzed. The results show that the mass of the optimal structural is reduced by 21.2%, and the mechanical properties meet the specific working conditions of the satellite. Finally, the self-developed desktop winding machine is used to wind the cylinder.
2021, 
