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Volume 35 Issue 2
Mar 2021
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Chinese Journal of High Pressure Physics  > 2021  >  35(2): 024201.
YAO Yongyong, SU Buyun, XIAO Gesheng, XU Haitao, SHU Xuefeng. In-Plane Biaxial Impact Response of Re-Entrant Auxetic Honeycomb[J]. Chinese Journal of High Pressure Physics, 2021, 35(2): 024201. doi: 10.11858/gywlxb.20200610
Citation: YAO Yongyong, SU Buyun, XIAO Gesheng, XU Haitao, SHU Xuefeng. In-Plane Biaxial Impact Response of Re-Entrant Auxetic Honeycomb[J]. Chinese Journal of High Pressure Physics, 2021, 35(2): 024201. doi: 10.11858/gywlxb.20200610
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In-Plane Biaxial Impact Response of Re-Entrant Auxetic Honeycomb

doi: 10.11858/gywlxb.20200610

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

  • Received Date: 02 Sep 2020
  • Rev Recd Date: 27 Sep 2020
  • Publish Date: 25 Aug 2021
    Abstract
  • The in-plane biaxial impact response of a re-entrant auxetic honeycomb structure is studied by finite element simulation. A re-entrant auxetic honeycomb structure with different regularities is established by using the node perturbation method, and its deformation modes, stress-strain curves and energy dissipation capacity under different impact velocities are compared with the regular honeycomb structure. The results show that the impact velocity is the most important factor affecting the deformation mode of the honeycomb structure. In addition, due to the influence of irregularity, the plateau stage of stress-strain curve is prolonged and the degree of anisotropy of the structure is inhibited under biaxial impact, resulting that the deformation characteristics of the structure change from local compactness to overall compactness. In terms of energy absorption capacity, the irregularity of the structure leads to the lag of the compaction stage, so its plastic energy dissipation is lower than that of the regular model under the same compression degree.

     

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