RESEARCH ON CRASHWORTHINESS OF BIONIC PENTACLE THIN-WALLED STRUCTURE INSPIRED BY CARAMBOLA

SUN YuZhou; YANG ZhuoRan; XIA Yan; JIANG Han

doi:10.16579/j.issn.1001.9669.2024.01.006

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RESEARCH ON CRASHWORTHINESS OF BIONIC PENTACLE THIN-WALLED STRUCTURE INSPIRED BY CARAMBOLA

更新时间：2024-04-18

- RESEARCH ON CRASHWORTHINESS OF BIONIC PENTACLE THIN-WALLED STRUCTURE INSPIRED BY CARAMBOLA
- Journal of Mechanical Strength Vol. 46, Issue 1, Pages: 40-47(2024)
- 作者机构：
  
  1. 西南交通大学力学与航空航天学院应用力学与结构安全四川省重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2024.01.006
  CLC： TB124
- Published：15 February 2024，
- 稿件说明：
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SUN YuZhou, YANG ZhuoRan, XIA Yan, et al. RESEARCH ON CRASHWORTHINESS OF BIONIC PENTACLE THIN-WALLED STRUCTURE INSPIRED BY CARAMBOLA. [J]. Journal of Mechanical Strength 46(1):40-47(2024)
DOI：

SUN YuZhou, YANG ZhuoRan, XIA Yan, et al. RESEARCH ON CRASHWORTHINESS OF BIONIC PENTACLE THIN-WALLED STRUCTURE INSPIRED BY CARAMBOLA. [J]. Journal of Mechanical Strength 46(1):40-47(2024) DOI： 10.16579/j.issn.1001.9669.2024.01.006.

摘要

薄壁吸能结构在航空航天和交通运输等领域发挥着重要作用。受具有出色抗压特性的杨桃果实启发，设计了仿生星形薄壁结构。通过有限元仿真、实验和理论分析结构变形和吸能机制，讨论截面形状和几何参数对薄壁结构吸能特性的影响。探究了层级设计与加强筋配置对星形薄壁结构耐撞性的优化效果。结果表明，星形薄壁结构具有规则的渐进折叠变形机制，其比吸能、压溃力效率等耐撞性能大幅优于常见截面的薄壁结构，具有良好的工程应用潜力。

Abstract

Thin-walled energy absorber plays an important role in aerospace

transportation and other fields. Inspired by carambola fruit with excellent crashworthiness

the bio-inspired pentacle thin-walled structure was designed. The deformation and energy absorption mechanism of the struct were analyzed by finite element simulation

experiment and theory. The influence of cross-section shapes and geometric parameters on the energy absorption characteristies were discussed. Investigations were carried out on the optimization effect of hierarchy and stiffener on crashworthiness. The results show that the bio-inspired pentacle thin-walled structure has regular progressive folding deformation mechanism. The crashworthiness properties of pentacle thin-walledstructure

such as specific energy absorption and crushing force efficiency

are significantly better than that of thin-walled structures with common sections

showing good engineering application potential.

关键词

耐撞性薄壁结构能量吸收有限元仿真结构仿生学

Keywords

CrashworthinessThin-walled structureEnergy absorptionFinite element simulationStructural bionics

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