The compressive response of additively-manufactured hollow truss lattices: an experimental investigation

Abstract The mechanical response of additively-manufactured hollow truss lattices is experimentally investigated under quasi-static compression testing. Exploiting the recent developments in Fusing Deposition Modelling (FDM) technique, two families have been fabricated, obtained as tessellation space octet-truss and diamond unit cells. Four specimens for each family designed with prescribed relative density, selecting different inner-to-outer radius ratios r/R their struts. Compression experiments prove that properties failure mechanisms are significantly dependent on ratio. In particular, a shift from quasi-brittle to ductile at increasing values has revealed lattice, leading stable collapse mechanism increased energy absorption capacity. On other hand, more compliant behaviour observed lattice response, monotonic improvement function Such results substantiate potentialities structures an attractive solution when lightweight, resistant efficient materials required. Graphic