The deformation mode and strengthening mechanism of compression in the beetle elytron plate
The deformation mode and strengthening mechanism of compression in the beetle elytron plate
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DOI：
10.1016/j.matdes.2017.06.014
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发表时间：
2017-10-05
影响因子：
8.4
通讯作者：
Pan, Longcheng
中科院分区：
文献类型：
--
作者：
Chen, Jinxiang;Zhang, Xiaoming;Pan, Longcheng
为开发轻质仿生功能结构材料，研究了甲虫鞘翅板的压缩变形模式及其高吸能强化机理，结果表明：与蜂窝板相比，甲虫鞘翅板的压缩强度和吸能性能均有显著提高。这是因为在BEP中，具有高扭转刚度的中空小梁导致变形行为由压缩主导，产生具有三个半波的凸曲线，这与蜂窝壁的变形一致。本研究不仅揭示了BEPs的压缩变形模式和高能吸收机制，而且揭示了BEPs的生物原型与其功能之间的关系。研究结果表明，BEPs代表了蜂窝板的显着改进，并显示出广泛应用的潜力，作为新型的能量吸收夹层结构。(C)2017爱思唯尔有限公司版权所有。
For the development of lightweight biomimetic functional-structural materials, the compressive deformation mode of beetle elytron plates (BEPs) and their strengthening mechanism of high energy absorption were investigated, with the following results: compared with honeycomb plates, the compressive strength and the energy absorption properties of BEPs are significantly increased. This is because in a BEP, the hollow trabeculae with high torsional stiffness cause the deformation behavior to be dominated by compression, generating a convex curve with three half-waves, which is consistent with the deformation of the honeycomb walls. This study reveals not only the compressive deformation mode and the mechanism of high energy absorption in BEPs but also the relationship between the biological prototype of a BEP and its function. The findings show that BEPs represent a significant improvement over honeycomb plates and show potential for widespread application as novel energy-absorbing sandwich structures. (C) 2017 Elsevier Ltd. All rights reserved.