Abstract: With the increasing accuracy of the satellite payload, the thermal deformation of the frame structure as the satellite body and payload transition in the space environment cannot be ignored, and the thermal stability of the structure needs to be investigated at the initial design. In this paper, Hyperworks finite element software is used for satellite high-stability composite frame structure, and the topological optimization of the structure is emphasized. The structural configuration, the thickness of the ply and the angle of the ply are also investigated. The weight, stiffness and heat of the composite frame are also considered. The results show that compared with the original configuration, the optimized frame structure quality is reduced by 25.1%, the fundamental frequency is increased by 48.8%, and the thermal deformation is reduced by 57.1%. The Hyperworks topology optimization method significantly improves the composite frame structure, can guide the design of satellite high stability composite structure.

Key words: high stable, topology optimization, FEM, composite, thermal deformation