降低热变形的卫星有效载荷安装结构优化设计

Optimization Design of Reduced Thermal Deformation of Satellite Payload Mounting Structure

在整星有限元热变形分析基础上,以有效载荷安装结构热变形最小为目标,对安装结构依次进行拓扑优化及设计敏度分析和尺寸优化。结果表明:通过优化设计,在显著降低该结构热变形的同时大幅减小其质量;拓扑优化给出结构基本构型,尺寸优化进一步细化结构设计方案,二者结合能有效改进结构设计。

Based on analyzing thermal deformation of the whole satellite structure with finite element method, the payload mounting device structural optimization was performed. The objective of the optimization is to reduce the thermal deformation of the mounting structure. The optimization work was carried out in the following two steps： structural topology optimization, and structural design sensitivity analysis and size optimization. The results indicate that after optimization, both the thermal deformation and the mass are greatly reduced. By combining the structure optimization that founds the basic structure configuration and the structure size optimization that refines the structure scheme, the structure design can be greatly improved.