收拢压紧柔性太阳翼电池片应力影响因素研究

在压紧机构压紧力以及发射阶段加速度工况载荷共同作用下，收拢压紧状态的柔性折叠式太阳翼的太阳电池板上电池片的应力应满足力学强度要求。文章采用有限元方法对电池片应力主要影响因素，包括聚酰亚胺泡沫布局和厚度、聚酰亚胺泡沫力学性能、盖板结构及埋件形状等进行计算分析；总结降低收拢压紧状态下柔性太阳翼压紧点附近电池片压应力的主要来源途径，为柔性折叠式太阳翼的工程研制提供设计分析思路。

Study on factors affecting the stress on the cell of a flexible solar wing under folded and compressed state

Under the combined action of the compression force of the pressing mechanism and the accelerating load at the launch stage, the stress on the solar panel cell of the flexible foldable solar wing under the folded and compressed state should meet the mechanical strength requirements. In this paper, the finite element method (FEM) was used to calculate and analyze the main factors affecting the stress on the cell, including the layout and thickness of polyimide foam, the mechanical properties of polyimide foam, the structure of cover plate, and the shape of embedded parts. This paper summarized the main sources of reducing the compressive stress of the cell near the compression point of the flexible solar wing under the folded and compressed state, and provided design and analysis ideas for the engineering development of the flexible foldable solar wing.