冲击载荷下仿蜂巢柱状薄壁结构的能量吸收特性。

Energy absorption characteristics of bio-inspired honeycomb column thin-walled structure under impact loading.

机构信息

School of Aeronautic Engineering, Civil Aviation University of China, Tianjin 300300, China; School of Mechanical Engineering, Tianjin University, Tianjin 300072, China.

School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China.

出版信息

J Mech Behav Biomed Mater. 2018 Mar;79:301-308. doi: 10.1016/j.jmbbm.2018.01.001. Epub 2018 Jan 4.

DOI:10.1016/j.jmbbm.2018.01.001

PMID:29353773

Abstract

Beetles have developed the elytra that are interesting and impressive strategy for thriving in their native environments. The elytra, although formed from simple biopolymer constituents, take on many effective designs. In present work, internal structure of elytra is discussed and three bionic structures named as the bio-inspired honeycomb column thin-walled structure (BHTS) are proposed. Then the crushing behavior and energy absorption characteristics of the BHTS under axial impact loading are investigated by numerical simulation. This study reveals not only the relationship between the adding mode and energy absorption characteristics, but also the influence of column diameter on the BHTS. The findings show that the BHTS represents a significant improvement over honeycomb structures and show potential applications in the field of protective equipment.

摘要

甲虫已经发展出鞘翅，这是它们在原生环境中茁壮成长的有趣且令人印象深刻的策略。鞘翅虽然由简单的生物聚合物组成，但具有许多有效的设计。在目前的工作中，讨论了鞘翅的内部结构，并提出了三种仿生结构，分别命名为仿生蜂窝柱薄壁结构（BHTS）。然后通过数值模拟研究了 BHTS 在轴向冲击载荷下的破碎行为和能量吸收特性。这项研究不仅揭示了添加模式与能量吸收特性之间的关系，还揭示了柱径对 BHTS 的影响。研究结果表明，BHTS 比蜂窝结构有了显著的改进，并在防护设备领域具有潜在的应用。