Vibration analysis and optimization design of a solar-array arc-shaped substrate structure
This study proposed a multiparameter lightweight design of solar-array arc-shaped substrate while still en-suring its structure safety.Based on the equivalent plate theory,the anisotropic equivalent parameters of the novel solar-array arc-shaped substrate structure were determined to construct a three-dimensional finite element numerical model.The model's reliability was verified,and the weak areas were preliminarily located via the sine frequency-sweep vibration test.Finally,combining engineering practice,parametric modeling,and the multiobjective iterative optimization method,the variation of the maximum stress of the structure with each characteristic parameter under typical random vibration loads was analyzed,thereby obtaining a reinforcement optimization scheme that meets the structural safety conditions.Compared with the original structure,the maximum stress of the substrate can be re-duced by 21％,and that of the structure can be further reduced by 15.6％if the structure is reinforced by unidirec-tional weft-free cloth,which provides support for the lightweight design of the new configuration of the solar-array substrate structure.
国家科技期刊平台
NSTL
万方数据
维普
