Study on impact energy absorption characteristics of biomimetic multi-cell thin-walled structure

CHEN YaTing; HONG YiHao; WU Jun; WU Fei; ZHENG ShiWei; ZHAO ShunQiu

doi:10.16579/j.issn.1001.9669.2024.03.029

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Study on impact energy absorption characteristics of biomimetic multi-cell thin-walled structure

更新时间：2024-07-05

- Study on impact energy absorption characteristics of biomimetic multi-cell thin-walled structure
- Journal of Mechanical Strength Vol. 46, Issue 3, Pages: 750-755(2024)
- 作者机构：
  
  1. 广东工业大学材料与能源学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2024.03.029
  CLC： TG142.71
- Published：15 June 2024，
- 稿件说明：
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CHEN YaTing, HONG YiHao, WU Jun, et al. Study on impact energy absorption characteristics of biomimetic multi-cell thin-walled structure. [J]. Journal of Mechanical Strength , 2024,46(3):750-755.
DOI：

CHEN YaTing, HONG YiHao, WU Jun, et al. Study on impact energy absorption characteristics of biomimetic multi-cell thin-walled structure. [J]. Journal of Mechanical Strength , 2024,46(3):750-755. DOI： 10.16579/j.issn.1001.9669.2024.03.029.

摘要

仿生多胞薄壁结构具有质量轻、抗冲击性能强等优点。对莲藕、问荆进行仿生结构设计，与薄壁空管进行耦合，提出了两种新型的仿生多胞薄壁结构：一是薄壁空管与莲藕耦合结构（LR-IS），二是薄壁空管与莲藕、问荆耦合结构（LR-HS-IS）。通过Pro/E建立模型，导入到有限元软件Abaqus中进行数值模拟分析。此外，采用3D打印成型技术制作结构，通过落锤冲击试验和有限元数值模拟，对其在轴向冲击下的力学行为及吸能特性进行研究。结果表明，仿生多胞薄壁结构具有较好的吸能效果，显著提高了承载能力、载荷效率和比吸能。与单独的薄壁空管相比，仿生多胞薄壁结构不但能显著降低冲击效应，而且初始峰值力较为稳定。除此之外，该结构也非常符合轻量化、高吸能的要求。

Abstract

Bio-inspired multi-cell thin-walled structure has the advantages of light quality and strong impact resistance. The bio-inspired structures design of lotus root and horsetail were coupled with a thin-walled hollow tube

and two novel bio-inspired multi-cell structures were proposed. One was the coupling structure of thin-walled hollow tube and lotus root (LR-IS)

and the other was the coupling structure of thin-walled hollow tube

lotus root and horsetail (LR-HS-IS) . The models were built by Pro/E and imported into the finite element software Abaqus for numerical simulation analysis. In addition

the 3D printing molding technology was used to make the structures. The mechanical behavior and energy absorption characteristics under axial impact of drop hammer impact test and finite element numerical simulation were studied. The results show that the bio-inspired multi-cell structures have good energy absorption effect

significantly improve the carrying capacity

load efficiency and specific energy absorption. Compared with the individual thin-walled hollow tube

the bio-inspired multi-cell thin-walled structures can not only significantly reduce the impact effect

but also the initial peak force is relatively stable. In addition

the structures are also very consistent with the requirements of lightweight and high energy absorption.

关键词

工程仿生有限元模拟试验吸能抗冲击

Keywords

Bionic engineeringFinite element simulationExperimentEnergy absorptionImpact resistance

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