Compression Process of Pore inside Explosive Charge in a Warhead under Launching Load

  • W. Li Beijing Institute of Technology, Beijing
  • H. Yan Beijing Institute of Technology, Beijing
  • Q. Zhang Beijing Institute of Technology, Beijing
  • Y.H. Ji Beijing Institute of Technology, Beijing
DOI: https://doi.org/10.14429/dsj.60.349
Keywords: Thermobaric warhead, numerical computing, dynamical response

Abstract

In this paper, the compression process of the pore inside explosive charge in a warhead under launching load is simulated and its influence on premature explosion is discussed. The relationship between the pore compression, distortion, and the form of 'igniting hot spot' has been established. The analysis of result indicates that the stress wave in the explosive charge developed due to launching load is a key factor in the pore compression process. The volume change of the pore, which is related to its original volume, is a major factor affecting the form of 'ignition hot spot'. It appears that a specific size of the pore may not lead to the premature explosion of explosive charge in a warhead under launching load. The quantitative relationship between the dangerous size range of the pore and the launching load is a core research subject of warhead safety during launching. With this objective, numerical computing was undertaken to assess the pore's distortion parameter inside the explosive charge of a warhead, and generate database for warhead safety under launching load.

Defence Science Journal, 2010, 60(3), pp.244-250, DOI:http://dx.doi.org/10.14429/dsj.60.349

Author Biographies

W. Li, Beijing Institute of Technology, Beijing
Doing PhD from Department of Mechanics Engineering, Beijing Institute of Technology. His research areas are engineering mechanics and explosion blast.
H. Yan, Beijing Institute of Technology, Beijing
Department of Mechanics Engineering, Beijing Institute of Technology. Her research areas are engineering mechanics and explosion blast.
Q. Zhang, Beijing Institute of Technology, Beijing
Professor, Weapon System and Operating Engineering group, State Key Laboratory of Explosion Science and Technology. His research areas are fuel air explosives (FAE) and their applications.
Y.H. Ji, Beijing Institute of Technology, Beijing
Department of Mechanics Engineering, Beijing Institute of Technology. Her research areas are engineering mechanics and explosion blast.
Published
2010-04-21
How to Cite
Li, W., Yan, H., Zhang, Q., & Ji, Y. (2010). Compression Process of Pore inside Explosive Charge in a Warhead under Launching Load. Defence Science Journal, 60(3), 244-250. https://doi.org/10.14429/dsj.60.349
Issue
Vol 60 No 3
Section
Review Papers
Copyright (c) 2016 Defence Science Journal

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