World Academy of Science, Engineering and Technology
Published November 20, 2011 | Version 6584
Journal article Open

Effects of Material Properties of Warhead Casing on Natural Fragmentation Performance of High Explosive (HE) Warhead

Description

This research paper presents numerical studies of the characteristics of warhead fragmentation in terms of initial velocities, spray angles of fragments and fragment mass distribution of high explosive (HE) warhead. The behavior of warhead fragmentation depends on shape and size of warhead, thickness of casing, type of explosive, number and position of detonator, and etc. This paper focuses on the effects of material properties of warhead casing, i.e. failure strain, initial yield and ultimate strength on the characteristics of warhead fragmentation. It was found that initial yield and ultimate strength of casing has minimal effects on the initial velocities and spray angles of fragments. Moreover, a brittle warhead casing with low failure strain tends to produce higher number of fragments with less average fragment mass.

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References

  • O. B. Zecevic, J. Terzic and A. Catovic, "Influence of warhead case material on natural fragmentation performances," in 12th DAAAM International Symposium Vienna, Austria, 2004.
  • M. T. Shahraini, "Casing toughness effect on anti-air fragmentation warhead performance," in 23rd International Symposium on Ballistics, Tarragona, Spain, 2007, pp. 209-213.
  • P. Cooper, Explosives Engineering. Wiley-VCH 1996, pp. 385-394.
  • Elements of terminal Ballistics, Part One, Introduction, Kill Mechenics and Vulnerability, Washington, D.C., 1962, pp. 4-175.
  • N. F. Mott, "Fragmentation of high explosive shells, A theoretical formula for the distribution of weights of fragments," 1943.
  • J. A. Zukas and W. P. Walters, Explosive Effects and Applications. New York: Springer, 1997, pp. 89-91.
  • G. Tanapornraweekit and W. Kulsirikasem, "Lethality assessment of high explosive (HE) warhead with preformed fragments," in 26th International Symposium on ballistics, Miami, FL, USA, 2011, to be published.