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Volume 31 Issue 5
Nov 2017
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Chinese Journal of High Pressure Physics  > 2017  >  31(5): 557-565.
LING Qi, HE Yong, HE Yuan, ZHOU Jie. Numerical Simulation of Directed Scattering of Fragments Driven by Sector-Shaped Double-Layer Charge[J]. Chinese Journal of High Pressure Physics, 2017, 31(5): 557-565. doi: 10.11858/gywlxb.2017.05.008
Citation: LING Qi, HE Yong, HE Yuan, ZHOU Jie. Numerical Simulation of Directed Scattering of Fragments Driven by Sector-Shaped Double-Layer Charge[J]. Chinese Journal of High Pressure Physics, 2017, 31(5): 557-565. doi: 10.11858/gywlxb.2017.05.008
shu

Numerical Simulation of Directed Scattering of Fragments Driven by Sector-Shaped Double-Layer Charge

doi: 10.11858/gywlxb.2017.05.008

  • ZNDY of Ministerial Key Laboratory, Nanjing University of Science and Technology, Nanjing 210094, China

  • Received Date: 22 Dec 2016
  • Rev Recd Date: 06 Mar 2017
    Abstract
  • The dynamic processes of the fragments driven by single and double layer charges were numerically simulated using LS-DYNA and the initial velocity and the distribution of the preformed fragments were obtained.The effects of the initiation positions and the explosive parameters of the double-layer charge on the fragment-driven process were calculated and analyzed.The results show that the calculated values are in good agreement with the experimental results.Compared with the single charge, the double layer charge can make the fragments more focused, and the total kinetic energy of the fragments also increases by more than 12%.The comprehensive damage efficiency of the fragments can be further improved by changing the initiation mode and the explosive type of the double layer charge.

     

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