Lattice sandwich structure bearing performance optimization method based on gradient curved surface offset

The invention designs a lattice sandwich structure bearing performance optimization method based on gradient curved surface offset, and aims to provide a universal bearing performance optimization design method for a lattice sandwich structure. Firstly, skeleton-shaped three-period minimum curved surface dot matrix unit cells are created, the function relation between control parameters t and volume fractions rho of the skeleton-shaped three-period minimum curved surface dot matrix unit cells is fitted, and on this basis, curved surface offset design based on Boolean subtraction is carried out on the dot matrix unit cells with different volume fractions; the method is combined with a lattice structure variable density design method, a lattice sandwich structure model with gradient curved surface offset is designed, the lattice sandwich structure model serves as an optimization design result, and the mechanical properties of lattice sandwich structures in different gradient design modes are obtained through a