Multi-cell energy-absorbing structures with hollow columns inspired by the beetle elytra

Jianxun Du, Peng Hao, Mabao Liu, Fabrizio Scarpa

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Abstract

In this work, we propose a new type of thin-walled energy-absorbed structure with hollow columns that possesses a design inspired by the beetle elytra. The failure mode of the bionic thin-walled structures is firstly discussed by developing a theoretical model. The energy absorption properties of these bio-inspired multi-cell thin-walled structures have been then investigated using nonlinear finite element simulations. The values of the specific energy absorption and the crushing force effectiveness have been evaluated for different structures with parametrized column nested configurations. Dynamic impact simulations of multi-cell tubes with different columns nested modes, wall thickness and impact angles have been performed, and the results discussed.

Original languageEnglish
Pages (from-to)4279-4291
Number of pages13
JournalJournal of Materials Science
Volume55
Early online date2 Jan 2020
DOIs
Publication statusPublished - 1 Apr 2020

Keywords

  • beetle elytra
  • bionic multi-cells tube
  • thin-walled structure
  • geometric parameter
  • energy absorbed material

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