Experiment & simulation of sympathetic detonation tests

Conditions of sympathetic detonation can be obtained from the experiment of sympathetic detonation tests, while the details of sympathetic detonation progress can not be reached. Sympathetic detonation experiments of GHL explosive were carried out. By observation of the witness and remanent explosives, the explosive reaction state was judged. Numerical simulations of sympathetic detonation were conducted with non-linear finite element method. The model considered the effects of shock waves produced by donor and acted on the acceptor. The donor and ambient air were described in Euler algorithm while the acceptor and witnesses were in Lagrange algorithm. Histories in the sympathetic detonation reaction of the acceptor were analyzed. The results indicated that the initiation point was at the underside of the acceptor. Detonation waves transmitted down first, so that the underside of the explosive initiated first, and then upward to detonate the explosives column. The pressure of explosive bottom was much lower than the C-J detonation pressure and the damage of witness was relatively small.