关键词: 豆荚结构, 空间伸展机构, 力学性能, 仿真分析

Abstract: The pod rod, also named as CTM(collapsible tubular mast), was an elastic stretching structure with large exhibition-to-receive ratio. It might be compressed into a plate and loaded on the spacecraft and self-deployed into a hollow cylinder when needed, which might be used to expand solar wings, satellite antennas and other components, and might reduce the volume of spacecraft during launch. The mechanics properties of pod structure should be considered when designing the structure size. A numerical model was established by means of mechanics analysis in order to solve the problems of large amount of calculation, and frequent variation of the factors that affecting mechanics properties. The numerical model might be applied to calculate the compressive force variation during the entire compression processes for the pod structure with different size parameters. The finite element analysis software ABAQUS was used to simulate and analyze the compression deformation. The deviations between the calculation results and the simulation ones are less than 10%. The influences of size parameters of the pod structure on the compressive force were obtained through numerical model analyses.

Key words: pod structure, space deployment mechanism, mechanics property, simulation analysis