A self-locked chiral honeycomb: In-plane compression behavior and energy absorption

Abstract

A novel aluminum self-locked nested chiral structure (SLKH) has been introduced to significantly enhance the energy absorption capacity of honeycomb structures. This innovative design leverages the geometrical advantages of chirality, offering a cost-effective and facile manufacturing process. A comprehensive study on the mechanical properties and energy absorption characteristics was conducted by utilizing the LS-DYNA. The multi-parameter design investigation revealed that the proportional coefficient, in conjunction with the relative density, significantly influences the mechanical performance of the SLKH. Comparative analysis with integrated structures underscored the superior energy absorption and buffering capabilities of the SLKH. Furthermore, the study delved into the dynamic impact performance under quasi-static conditions, highlighting the impact of Poisson's ratio on self-locked structures. The findings provide valuable insights for the design and practical application of advanced cellular structures.