Energy absorption of diamond lattice cylindrical shells under axial compression loading

A mapping method was proposed to construct the lattice cylindrical shell (LCS) based on the triply periodic minimal surfaces (TPMS). The diamond lattice cylindrical shell (D-LCS) was designed using the proposed method and fabricated by selective laser melting (SLM). The experimental tests were conducted to investigate the energy absorption performance of these structures under quasi-static axial compression loading. The finite element (FE) models were established and validated using experimental results. Furthermore, the influence of the design parameters on the deformation modes and energy absorption performances of the D-LCSs were studied by parametric studies. The results showed that the D-LCS exhibited superior energy absorption performances compared with its counterparts. The relative density, cell size, radial variation coefficient, and mapping angle had significant effects on the deformed modes and energy absorption performances of the D-LCS structures. The findings of this study were expected to facilitate the design of the D-LCS structures for energy absorption applications.