Science and Technology of Energetic Materials

Vol.63, No.5 (2002)

Research paper

Numerical investigation of warhead design with HE
Hisaatsu Kato, Jinshou Yoneda, and Michinori Takizuka


A conventional warhead commonly employs case loaded high explosives(HE). The casing (Shell and liner) of the warhead is accelerated and transformed by detonation energy of a HE into fragments, which destroy a target effectively. We should select the HE and design of the casing to destroy the target most effectively. To improve the performance of the warhead, we should consider not only the improvement of the HE and the shell, but also interaction between HE and the casing. Generally it may require a long time and high cost in the development of a new warhead. It is necessary to reduce the time and the cost, which are mainly originated from the experimental verifications in the development, Recently advancement in the computer technology and appearance of numerical analysis softwares enabled one to reduce time and cost for warhead design sigmificantly. We tried to compare the experimental data with the calculated results obtained by using the hydrocode AUTODYN for warhead designs. The precision of the numerical values required for computer simulations has improved the accuracy of the calculated results for a warhead. Numerical methods for simulating different types of warheads are proposed in this paper.

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