卫星复合材料桁架结构多级优化设计方法

Multilevel Optimization Method of Composite Truss Structure for Satellite

针对卫星用复合材料桁架结构,提出一种多级优化设计方法,对复合材料桁架结构的空间构型、几何参数以及材料铺层角度开展协同优化设计。该方法能够在缩减优化问题求解规模,提高解算精度的同时,获得兼顾结构刚度、强度、稳定性、质量以及在轨热变形的综合最优结果。最终通过工程算例,验证了文中提出优化设计方法的有效性。

In this study,a multi-level method is proposed for the optimal design of composite truss structures for satellites. This novel optimization method conducts collaborative optimization de- sign by taking the composite truss structures＇ spatial configuration, geometrical parameters and lay-up angle into consideration simultaneously. The optimization method is able to decrease the computational scale and improve the calculation precision. Meanwhile, the overall optimal results referring to stiffness, strength, stabilization, mass and in-orbit deformation of composite truss structure can be obtained. Finally the feasibility of the optimization method is verified by applying it to an engineering example.