Mechanical Property Analysis of Hyperbolic Structure: Compression Behavior, Energy Absorption Performance and Geometric Influence 2024-01-2238

Inspired by the cross-section of a beetle’s elytron, hyperbolic lattice with double-layered feature has received increasing attention in recent years. This paper aims to investigate the compression behavior and energy absorption performance of a truss-based hyperbolic structure. The quasi-static compression simulation for the hyperbolic structure has been performed and validated with a compression test. Through compression simulation and test, the hyperbolic structure proved to show obvious twisting effect. To explore the influences of the geometric parameters in the mechanical properties of hyperbolic structure, this paper has designed 13 cells with varied rotation angle, height, and rod diameter, and investigated the mechanical properties of these configurations. The results show that the rod diameter has the greatest effect on the energy absorption performance of the hyperbolic structure, with a maximum enhancement of 97.5%, while the overall height has the smallest effect with a maximum enhancement of only 0.5% in the most ideal case. This study provides a common reference for exploring the energy-absorbing capabilities of hyperbolic structures.