To study the influence of the core cell on the structural carrying capacity, in this paper, lattice sandwich structure optimization model was established, which was elaborated by tetrahedron unit cell of sandwich structure. For the purpose of verifying the effectiveness of the optimization model and the solution, a sandwich tic-tac-toe beam structure with the goal of maximizing the stiffness of the structure was optimized by using the method of sequential quadratic programming.%为了研究夹芯单胞变化对结构承载能力的影响，建立了点阵夹芯结构的优化设计模型，以结构刚度最大为目标函数，考虑体积约束及单胞尺寸约束对夹芯单胞尺寸分布进行优化设计，并以四面体单胞夹芯结构的优化设计为例进行详细方法说明。采用序列二次规划法求解优化模型，完成了以结构刚度最大为目标的井字梁夹芯结构的优化设计，验证了模型、方法及优化效果。
展开▼
