Abstract
Hierarchical design can not only effectively improve the mechanical properties of lattice structure, but also enhance the multi-functional design ability of lattice structure. Based on pyramid lattice structure, a novel hierarchical pyramid lattice structure was designed to enhance the energy absorption property. The finite element method (FEM) was carried out to explore mechanical behaviors of the hierarchical pyramidal lattice structure. The simulation results showed that the new lattice structure can improve the bearing capacity of the structure, and has a good specific energy absorption capacity. In addition, it can effectively reduce the stress concentration and improve the strength of the structure.
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