Effect of curvature and hierarchical size ratio on the out-of-plane impact properties of similar hierarchical honeycombs
Year: 2026
Type: article
Abstract: Based on classical hexagonal honeycomb materials, this study proposes a self-similar hierarchical design. Numerical simulations are employed to investigate the out of plane impact response of both straight walled and curved walled honeycombs, including their hierarchical counterparts. The focus is placed on how wall curvature and relative hierarchical scale influence the out of plane deformation mode, average crushing force, and energy absorption. Results show that both curvature and hierarchical size significantly affect mechanical performance. Notably, the effect of wall curvature is opposite for the two material types: increasing curvature enhances the properties of conventional honeycombs but reduces those of hierarchical honeycombs. Furthermore, the mechanical performance of hierarchical honeycombs first improves and then deteriorates as the hierarchical size varies, with the H 12 0 type representing the optimal scale. Therefore, mechanical properties can be effectively tuned by controlling wall curvature and hierarchical size.
Source: Physica Scripta
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7140131246