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Volume 36 Issue 3
May. 2022
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Chinese Journal of High Pressure Physics  > 2022  >  36(3): 034202.
DENG Minjie, LIU Zhifang. Design and Crashworthiness Study Based on Horsetail Bionic Thin-Walled Structure[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 034202. doi: 10.11858/gywlxb.20210880
Citation: DENG Minjie, LIU Zhifang. Design and Crashworthiness Study Based on Horsetail Bionic Thin-Walled Structure[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 034202. doi: 10.11858/gywlxb.20210880
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Design and Crashworthiness Study Based on Horsetail Bionic Thin-Walled Structure

doi: 10.11858/gywlxb.20210880

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

  • Received Date: 27 Sep 2021
  • Rev Recd Date: 13 Oct 2021
  • Issue Publish Date: 30 May 2022
    Abstract
  • Bionic design structures have received wide attention for their excellent mechanical properties and potential applications in engineering fields. In the bionic context, a new horsetail bionic thin-walled structure is designed and its energy absorption characteristics under axial compression are investigated. The results show that the specific energy absorption (SEA) of the bionic thin-walled tube is increased by 34.74% and the compression force efficiency is increased by 37.50%; the specific energy absorption of the bionic thin-walled structure increases monotonically with the wall thickness; the impact resistance of the thin-walled structure is the best when the number of ribs is 4 for a certain mass; the SEA is almost not lost when the rib thickness is constant. The initial peak force of the thin-walled structure can be reduced by adjusting the rib angle with constant rib thickness. To further improve the energy absorption capacity of the thin-walled structure, a multi-objective optimization was performed using the internal radius, rib angle and rib thickness as design variables. The response surface methodology (RSM) and genetic algorithm (NSGA-Ⅱ) were used to maximize the SEA while minimizing the peak crushing force. The SEA of the optimized thin-walled structure was improved by 13.42% compared to the initially designed thin-walled structure.

     

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