Axial crashworthiness analysis and optimization of a bionic thin-walled tube based on bamboo structure

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Abstract

A bionic tube composed of bionic joints, bionic units and bionic inner tubes was developed based on the bamboo structure to improve the crashworthiness and the energy absorption of thin walled tube resistance structures. The finite element method was used to simulate the axial impact with the response surface method used to obtain the optimal structure of the bionic energy-absorbing tube. The results show that the optimal structure of the bionic tube has a thickness of 1mm for the bionic units and a thickness of 0.628mm for the bionic inner tubes, with the specific energy absorption being 157.57kN and 34.33kJ/kg, respectively. These studies provide new methods and ideas for improving crashworthiness energy absorption of thin-walled structures.

Keywords thin-walled tube structural bionics bamboo axial energy absorption response surface optimization

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Issue Date: 15 March 2014

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	Shucai XU
	Meng ZOU
	Cangang WEI
	Longzhen WANG
	Jinhuan ZHANG
	Yongjun YU

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Shucai XU,Meng ZOU,Cangang WEI, et al. Axial crashworthiness analysis and optimization of a bionic thin-walled tube based on bamboo structure[J]. Journal of Tsinghua University(Science and Technology), 2014, 54(3): 299-304.

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http://jst.tsinghuajournals.com/EN/ OR http://jst.tsinghuajournals.com/EN/Y2014/V54/I3/299

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