Research on mechanical properties of lattice structure based on selective laser melting technology

In this research, four lattice frameworks are characterized by different types and relative densities. Quasi-static uniaxial compression tests were performed on lattice structures, resulting in stress-strain curves for these structures while preserving the intended meaning. The findings indicate a reduction in the elastic modulus of the lattice structure from 180 GPa to below 150 MPa when compared to the solid metal structure. The yield strength and elastic modulus of the lattice structure were determined through curve analysis. The successful description of the relationship between the elastic modulus and the relative density of the lattice structure was accomplished through the utilization of the Gibson-Ashby model. The study reveals that its relative density and type primarily influence the strength of the lattice structure.