Crashworthiness of coach’s octagonal bionic multi-cell thin-walled tubes based on beetle elytra

BAI Fanghua1, ZHANG Linwei2, BAI Zhonghao2, QIN Zhenyuan1, ZHANG Yongchun1, WANG Ruohuang1, HU Wei1

Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (21) : 24-30.

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PDF(1698 KB)
Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (21) : 24-30.

Crashworthiness of coach’s octagonal bionic multi-cell thin-walled tubes based on beetle elytra

  • BAI Fanghua1, ZHANG Linwei2, BAI Zhonghao2, QIN Zhenyuan1, ZHANG Yongchun1, WANG Ruohuang1, HU Wei1
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Abstract

In order to improve the crashworthiness of a coach’s front energy-absorbing structure, a series of coach’s novel octagonal bionic multi-cell thin-walled tubes were designed through imitating microstructure of beetle elytra, and their energy absorption characteristics under axial loading were studied.Firstly, the finite element model for an octagonal multi-cell thin-walled tube was established.Then, the validity of the finite element model was verified using the simplified hyper folding element theory.Finally, the crashworthiness of an octagonal bionic multi-cell thin-walled tube and that of a traditional multi-cell thin-walled one were studied contrastively with finite element simulation.The results showed that an octagonal bionic multi-cell thin-walled tube has an excellent crashworthiness.
 

Key words

octagonal bionic multi-cell tubes / beetle forewings / theoretical validation / crashworthiness

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BAI Fanghua1, ZHANG Linwei2, BAI Zhonghao2, QIN Zhenyuan1, ZHANG Yongchun1, WANG Ruohuang1, HU Wei1. Crashworthiness of coach’s octagonal bionic multi-cell thin-walled tubes based on beetle elytra[J]. Journal of Vibration and Shock, 2019, 38(21): 24-30

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