Response of sandwich structures with novel TPMS cores under cyclic uniaxial compression

This paper focuses on the compressive behavior of nine triply periodic minimal surface (TPMS) structures and one stochastic geometry, designed through an implicit modeling approach and fabricated using a stereolithography (SLA) technique.The compressive response is analyzed, with two topologies outperforming the well-known gyroid, in terms of rigidity and yield strength.Low cyclic testing at two strain levels highlights the good repeatability and stability of the proposed topologies, while comparing the specimens from an energy absorption performance and residual deformation perspective.The stochastic geometry exhibited the worst recovery rates, even though it had the second-best energy absorption capabilities for the single compression testing.