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Volume 35 Issue 5
Sep 2021
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Chinese Journal of High Pressure Physics  > 2021  >  35(5): 054205.
YU Pengshan, LIU Zhifang, LI Shiqiang. Design and Energy Absorption Characteristic Analysis of a New Bio-Bamboo Thin-Walled Circular Tube[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 054205. doi: 10.11858/gywlxb.20210710
Citation: YU Pengshan, LIU Zhifang, LI Shiqiang. Design and Energy Absorption Characteristic Analysis of a New Bio-Bamboo Thin-Walled Circular Tube[J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 054205. doi: 10.11858/gywlxb.20210710
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Design and Energy Absorption Characteristic Analysis of a New Bio-Bamboo Thin-Walled Circular Tube

doi: 10.11858/gywlxb.20210710

  • Institute of Applied Mechanics, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

  • Received Date: 19 Jan 2021
  • Rev Recd Date: 04 Feb 2021
    Abstract
  • Inspired by the microstructure of natural bamboo, a new bio-bamboo thin-walled tube was designed by introducing double-rhombic ribs between inner and outer tubes on the basis of the traditional double-circular tube structure. Based on the theory of simplified super folding element, theoretical models of bio-bamboo circular tubes under axial compression were established. Finite element software ABAQUS was used to simulate the axial compression of these models. For crashworthiness and deformation mode of bio-bamboo thin-walled tube, the effects of those number of double-rhombic ribs, diameter of inner tube, wall thickness were analyzed, and it was compared with the traditional structure. The results show that the theoretical prediction is consistent with numerical simulation, and the errors of average compression force and specific energy absorption are less than 10%. Compared with traditional double-circular tube, the specific energy absorption of the bio-bamboo thin-walled tube is increased by 83.61% and the compression force efficiency is increased by 198.65%. The number of ribs has a significant effect on the crashworthiness of the structure. With the number increase of double-rhombic ribs, both specific structural energy absorption and peak crushing force increases. When the number of ribs is small, the structure appears local buckling deformation, which affects the energy absorption crashworthiness. The smaller the diameter of inner tube, the higher the initial peak force, and the larger the diameter of inner tube, the smaller the energy absorption.

     

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