Compression property of hierarchical pyramid lattice

Hierarchical lattice structures have excellent mechanical and multi-functional properties. A novel hierarchical pyramid lattice structure was designed and the mechanical behaviours were studied using a finite element method. In order to reflect the advantages of hierarchical pyramid lattice structure, the compression simulation of the traditional pyramid lattice structure with the same relative density was also carried out. The results showed that the designed hierarchical pyramid lattice structure increased the buckling resistance, reduced the stress concentration at the joint of panel and core, and increased the energy absorption performance and specific strength. The designed hierarchical pyramid lattice structure contributes to the expansion of hierarchical lattice structure.