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Chinese Journal of High Pressure Physics  > 2010  >  24(1): 61-66 .
WANG Xin-Zheng, ZHANG Song-Lin, ZOU Guang-Ping. Numerical Analysis on Fragmentation Properties of the Steel Cylinder Subjected to Detonation of Internal Short Cylinderical Explosive Charge[J]. Chinese Journal of High Pressure Physics, 2010, 24(1): 61-66 . doi: 10.11858/gywlxb.2010.01.011
Citation: WANG Xin-Zheng, ZHANG Song-Lin, ZOU Guang-Ping. Numerical Analysis on Fragmentation Properties of the Steel Cylinder Subjected to Detonation of Internal Short Cylinderical Explosive Charge[J]. Chinese Journal of High Pressure Physics, 2010, 24(1): 61-66 . doi: 10.11858/gywlxb.2010.01.011
shu

Numerical Analysis on Fragmentation Properties of the Steel Cylinder Subjected to Detonation of Internal Short Cylinderical Explosive Charge

doi: 10.11858/gywlxb.2010.01.011
  • 1.

    Northwest Institute of Nuclear Technology, Xi'an 710024, China;

  • 2.

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

  • 3.

    College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China

More Information
  • Corresponding author: WANG Xin-Zheng
  • Received Date: 10 May 2009
  • Rev Recd Date: 20 Sep 2009
  • Publish Date: 15 Feb 2010
    Abstract
  • The characteristics of fragments, which are numerical studied with Smoothed Particle Hydrodynamic (SPH) algorithms, come from the steel cylinder subjected to the detonation of internal short cylinderical explosive charge. Grady spall model is employed to describe the spall failure of the steel cylinder. Stochastic failure is used to define the failure models, in which Mott distribution is used to depict the failure strain. Mass distribution and velocity of fragments are mainly discussed. The results show that the part near the head of explosive begins to fracture after the steel cylinder expands to a certain extent, and then the part around the explosive disaggregates to fragments. For the closed cylinder, the ends are the other weakness position. The fragments around the explosion centre are smaller with high velocity, while the fragments around cylinder ends are larger with low velocity. The fragments near the explosion centre are relatively concentrated in the space.

     

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