高载荷比卫星的结构轻量化设计方法

To realize a lightweight design for satellites with high load ratios, this study mainly focuses on honeycomb sandwich structures. First, the equivalent theory of a honeycomb sandwich structure is revised, and sensitivity analysis is conducted to extract the main parameters affecting the rigidity and quality of structural plates. Second, the structural parameters are optimized and analyzed according to the requirements of engineering development. Finally, simulation verification is performed on the basis of the finite element method. Results show that the calculation error of rigidity is reduced from 3% to 1% by using the modified equivalent formula and thus verify the correctness of the equivalence theory. The goal of lightweight design is achieved because the weight of the modified structure's subsystem is reduced by 41.6%. The 'New Technology Verification Satellite E' developed using the proposed method has been launched, thereby providing a reference for future engineering practice.