Study on the Quasistatic Compression Performance of Arch Microstrut Lattice Structure by Selective Laser Melting

ARCH lattice structure is composed of arch microstrut units arranged in order, which has excellent energy absorption performance, good designability, and good predictability of failure mode. ARCH lattice structure is expected to be applied to a variety of energy absorption and anti-impact components or devices. Herein, the quasistatic compression experiment is conducted on the ARCH lattice structure samples. The mechanical properties and energy absorption capability of ARCH lattice structures with different unit sizes and different relative densities are experimentally researched. The results show that, compared with other lattice structures, ARCH lattice structures have superior energy absorption capability. The relative density has a great influence on the mechanical properties and energy absorption capability of ARCH lattice structures. The Gibson-Ashby equation is established to estimate the mechanical properties and energy absorption capability of the lattice structures with different relative densities.