{"title":"Effects of Material Properties of Warhead Casing on Natural Fragmentation Performance of High Explosive (HE) Warhead","authors":"G. Tanapornraweekit, W. Kulsirikasem","volume":59,"journal":"International Journal of Physical and Mathematical Sciences","pagesStart":1770,"pagesEnd":1776,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/6584","abstract":"This research paper presents numerical studies of the\r\ncharacteristics of warhead fragmentation in terms of initial velocities,\r\nspray angles of fragments and fragment mass distribution of high\r\nexplosive (HE) warhead. The behavior of warhead fragmentation\r\ndepends on shape and size of warhead, thickness of casing, type of\r\nexplosive, number and position of detonator, and etc. This paper\r\nfocuses on the effects of material properties of warhead casing, i.e.\r\nfailure strain, initial yield and ultimate strength on the characteristics\r\nof warhead fragmentation. It was found that initial yield and ultimate\r\nstrength of casing has minimal effects on the initial velocities and\r\nspray angles of fragments. Moreover, a brittle warhead casing with\r\nlow failure strain tends to produce higher number of fragments with\r\nless average fragment mass.","references":"[1] O. B. Zecevic, J. Terzic and A. Catovic, \"Influence of warhead case\r\nmaterial on natural fragmentation performances,\" in 12th DAAAM\r\nInternational Symposium Vienna, Austria, 2004.\r\n[2] M. T. Shahraini, \"Casing toughness effect on anti-air fragmentation\r\nwarhead performance,\" in 23rd International Symposium on\r\nBallistics, Tarragona, Spain, 2007, pp. 209-213.\r\n[3] P. Cooper, Explosives Engineering. Wiley-VCH 1996, pp. 385-394.\r\n[4] Elements of terminal Ballistics, Part One, Introduction, Kill\r\nMechenics and Vulnerability, Washington, D.C., 1962, pp. 4-175.\r\n[5] N. F. Mott, \"Fragmentation of high explosive shells, A theoretical\r\nformula for the distribution of weights of fragments,\" 1943.\r\n[6] J. A. Zukas and W. P. Walters, Explosive Effects and Applications.\r\nNew York: Springer, 1997, pp. 89-91.\r\n[7] G. Tanapornraweekit and W. Kulsirikasem, \"Lethality assessment of\r\nhigh explosive (HE) warhead with preformed fragments,\" in 26th\r\nInternational Symposium on ballistics, Miami, FL, USA, 2011, to be\r\npublished.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 59, 2011"}