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Volume 34 Issue 2
Apr 2020
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Chinese Journal of High Pressure Physics  > 2020  >  34(2): 023301.
LI Jianping, LIU Siqi. Structure Optimization of Square Explosive Dispersion Device[J]. Chinese Journal of High Pressure Physics, 2020, 34(2): 023301. doi: 10.11858/gywlxb.20190835
Citation: LI Jianping, LIU Siqi. Structure Optimization of Square Explosive Dispersion Device[J]. Chinese Journal of High Pressure Physics, 2020, 34(2): 023301. doi: 10.11858/gywlxb.20190835
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Structure Optimization of Square Explosive Dispersion Device

doi: 10.11858/gywlxb.20190835

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

  • Received Date: 16 Sep 2019
  • Rev Recd Date: 21 Oct 2019
  • Publish Date: 25 Jan 2020
    Abstract
  • This paper presents a numerical model of the square dispersing device for simulating the process of shell failure and fuel dispersion by LS-DYNA software. Combined with the results of the field experiments, this model reveals in detail the influence of the fillet angle and groove depth on the shell rupture process and fuel dispersion speed. The results show that the shell edge would no longer rupture when the fillet radius increases to 10 mm or the groove depth increases to 1.2 mm, since different groove depth would effectively reduce the nonuniform shell rupture. And when the depth of edge and middle groove is 1.2 mm and 1.6 mm respectively, the shell is uniformly ruptured. In addition, a special dispersing device with 10 mm fillet angle, 0.8 mm edge groove depth and 1.2 mm middle groove depth, could not only make the shell uniformly ruptured, but also increase the strength of the shell. Meanwhile, it would reduce the average velocity difference of fuel dispersion by 22%, which effectively improve the fuel dispersing efficiency.

     

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