Abstract:

The influence of composite charge of insensitive high explosive(IHE) and high explosive(HE) on the shock sensitivity was investigated through the gap tests of different explosive charge structures. It is shown that there is first order exponential relationship between shock sensitivity and height ratio. The gap test of composite charge was simulated using an explicit finite element program. The simulating results are identical with the data obtained from the experiment. The detonation reaction boundary values of Al, plexiglass, steel and unreacted JB-9014 explosive were obtained and compared.

Key words: explosion mechanics, shockwave sensitivity, composite charge, gap test, finite-element method, numerical simulation