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Volume 36 Issue 2
Apr 2022
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Chinese Journal of High Pressure Physics  > 2022  >  36(2): 024202.
LIU Zerong, LONG Renrong, ZHANG Qingming, CHEN Li. Theoretical Study of Deflecting and Petalling of Thin Plate under Debris Cloud Loading Induced by Hypervelocity Impact[J]. Chinese Journal of High Pressure Physics, 2022, 36(2): 024202. doi: 10.11858/gywlxb.20210811
Citation: LIU Zerong, LONG Renrong, ZHANG Qingming, CHEN Li. Theoretical Study of Deflecting and Petalling of Thin Plate under Debris Cloud Loading Induced by Hypervelocity Impact[J]. Chinese Journal of High Pressure Physics, 2022, 36(2): 024202. doi: 10.11858/gywlxb.20210811
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Theoretical Study of Deflecting and Petalling of Thin Plate under Debris Cloud Loading Induced by Hypervelocity Impact

doi: 10.11858/gywlxb.20210811

  • State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 11 Jun 2021
  • Rev Recd Date: 29 Jun 2021
    Abstract
  • In order to study the deformation and failure of the thin plate under impact of debris cloud in the multi-layer structure, a series of hypervelocity impact experiments on multi-layer structure are carried out. The experimental results showed that typical failure characteristics of the thin plate under impact of the high-speed debris cloud are central perforation, deflection and petalling. Considering the effect of bending moment and membrane force, an ideal rigid-plastic annular plate deflecting model is established, which can be used to describe large deflection of a thin plate under the strong axisymmetric impact load. The transverse and radial velocity fields of the thin plate under the strong axisymmetric impact load can also be calculated by the established ideal rigid-plastic annular plate deflecting model. With the Grady fragmentation theory, the number of petals can be calculated. The theoretical calculation result is consistent with the experiment. The research results can provide a basic theory for the damage assessment of the multilayer structure under the impact of hypervelocity projectiles.

     

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