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Volume 35 Issue 3
Jun 2021
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Chinese Journal of High Pressure Physics  > 2021  >  35(3): 034202.
YIN Huawei, WANG Chenling, DUAN Jinxi, LIU Limin. Crashworthiness Analysis and Optimization Design of New Thin-Walled Tube[J]. Chinese Journal of High Pressure Physics, 2021, 35(3): 034202. doi: 10.11858/gywlxb.20200624
Citation: YIN Huawei, WANG Chenling, DUAN Jinxi, LIU Limin. Crashworthiness Analysis and Optimization Design of New Thin-Walled Tube[J]. Chinese Journal of High Pressure Physics, 2021, 35(3): 034202. doi: 10.11858/gywlxb.20200624
shu

Crashworthiness Analysis and Optimization Design of New Thin-Walled Tube

doi: 10.11858/gywlxb.20200624
  • 1.

    College of Civil Engineering, Hunan University, Changsha 410082, Hunan, China

  • 2.

    Civil Engineering Inspection and Test Limited Company of Hunan University, Changsha 410082, Hunan, China

  • 3.

    College of Basic Education, National University of Defense Technology, Changsha 410072, Hunan, China

  • 4.

    Hunan Zetian Sensing Technology Co., Ltd., Changsha 410131, Hunan, China

  • Received Date: 09 Oct 2020
  • Rev Recd Date: 14 Dec 2020
    Abstract
  • Numerical simulation of the new thin-walled tube under the axial impact load was obtained by using LS-DYNA. The effects of the length of the upper thin-walled circular tube and the radius of the corrugated inducing groove on its crashworthiness and deformation mode were analyzed, and compared with the ordinary thin-walled circular tube. The results show that when the length of the upper thin-walled circular tube and the radius of the corrugated inducing groove are designed reasonably, the maximum peak crushing force, specific energy absorption and deformation mode of the new thin-walled tube in the crushing stage are superior to those the ordinary thin-walled circular tube. In order to obtain the new thin-walled tube with a better energy absorption effect, a multi-objective optimization scheme was built by using specific energy absorption and the maximum peak crushing force as optimization indicators, and the length of the upper thin-walled circular tube and the radius of the corrugated inducing groove as variables. The objective approximate functions were constructed based on the Kriging method, and the NSGA-Ⅱ algorithm was used to solve the multi-objective optimization problem.

     

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