Energy absorption characteristics of square frustum lattice structure

Lattice structure has become an important energy absorber with its light weight and high strength ratio. In this paper, the stable flat-topped pyramid is used as the structural cell, and square frustum lattice structure (SFLS) with excellent energy absorption performance is designed. The geometry of SFLS is controlled by three factors: cell height, side length ratio and cell number. The quasi-static compression experiment and the finite element...