Influence of honeycomb dimensions and forming methods on the compressive properties of beetle elytron plates

Abstract

For developing lightweight and high-strength biomimetic sandwich structures, this study investigates the influence of honeycomb dimensions and forming methods on the mechanical properties of beetle elytron plates relative to honeycomb plates via compression experiments and the finite element method. The results indicate that the trabecular-honeycomb core structure in beetle elytron plates can increase the compressive strength by approximately 50% and double the energy absorption capacity of honeycomb plates with the same material costs. Furthermore, the influence of three types of forming methods on the compressive properties of beetle elytron plates is investigated by comparing the different deformation modes of these structures with those of honeycomb plates. Based on these findings, application recommendations regarding the forming methods of beetle elytron plates are presented to facilitate the structural design and preparation techniques according to the performance requirements of different fields, which will accelerate the industrial application of these biomimetic structures.

The compressive property of a fiber‐reinforced resin beetle elytron plate and its influence mechanism

“…However, compared with typical HPs, the mechanical properties of BEPs are greatly improved, and the influence of the molding method on the compressive mechanical properties of BEPs is relatively small. 27 Based on the experience of preparing bionic HPs with short fiber-reinforced composites in the early stage, BEPs of SBFRCs were prepared by a unilateral integration forming method. The overall structure and size of the BEPs are shown in Figure 2(a), (b).…”

“…[22][23][24] The mechanical properties of BEPs have been shown to be superior to those of traditional honeycomb plates (HPs) by comparative compression tests (the materials were engineering resin or metal). [25][26][27] However, the beetle forewing is composed of chitin fibers and proteins, so it is a typical fiber-reinforced composite (fiberreinforced composite material, FRCM). 28 Therefore, the fiberreinforced composite BEP is the BEP type most similar to the organism in terms of its structure and composition.…”

Biomimetic research on beetle forewings in twenty years: Internal structure, model and integrated honeycomb plates

“…题, 为开展前翅小柱蜂窝结构的防撞应用指明了研究 方向, 而且其优越的抗压和吸能力学性能, 也为开展 甲虫板在诸多领域的产业化奠定了基础 [104,105] . 此外, 也对小型甲虫前翅结构特征, 独角仙各部分纤维层叠 方式的力学性能等进行了研究.…”

A new type of bionic grid plate—The compressive deformation and mechanical properties of the grid beetle elytron plate

“…Accordingly, the beetle elytron plate (BEP) was clearly defined [40]. The influences of the dimensions and modeling methods of BEPs with the same core thickness and the same core volume on their mechanical properties were also investigated [41,42]. Moreover, the compressive mechanical properties of the middle-trabecular beetle elytron plate (MBEP), whose trabeculae are arranged at the centers of the honeycomb walls, were also illustrated [43].…”