柔性太阳翼叠层电池弯曲适应性仿真与设计

航天器在轨进、出地影时，基于复合结构柔性基板的柔性太阳翼叠层电池在高、低温交变作用下会产生热弯曲变形。针对这一问题，采用有限元建模仿真，分析由太阳电池、盖片胶和抗辐照玻璃盖片组成的叠层电池的弯曲适应性，计算不同结构尺寸、不同叠层材料参数的叠层电池在跨中弯曲载荷下的最大应力。借助响应面技术研究设计变量与复合结构性能之间的关系，采用目标驱动优化分析，获得理想的结构尺寸参数。结果表明：叠层电池的宏观力学性能取决于微观不同叠层材料的组合方式；等效弹性模量不是定值，而是与叠层材料的参数有关；弯曲工况的失效模式取决于电池单体的最大拉应力，而不是宏观表征的整体弯曲强度。

Bending adaptability simulation and design of solar cell integrated cover of flexible solar array

During the illumination shadow period of orbit, the cell integrated cover based on the composite flexible substrates of the flexible solar array produces bending thermal deformation under alternating high and low temperature. As to this problem, the flexural adaptability of cell integrated cover consisting of solar cell, adhesive cover and irradiation resistant glass cover, is analyzed using finite element modeling and simulation. The maximum stresses of the cell integrated cover with different structural sizes and different laminated material parameters under mid span bending loads are calculated. The relationships between design variables and performance of composite structures are studied by response surface methodology. The dimension parameters of the structure are obtained using target driven optimization analysis. The results show that the macro mechanical properties of the cell integrated cover depend on the combination of different micro stacked materials; the equivalent elasticity modulus is not a fixed value, but it is related to the parameters of laminated materials; the failure modes under bending conditions depend on the maximum tensile stress of the cell monomer rather than the overall bending strength as macroscopically characterized.