Measurement and reactive burn modeling of the shock to detonation transition for the HMX based explosive LX-14

Abstract

Gas-gun driven plate-impact techniques were used to study the shock to detonation transition in LX-14 (95.5 wt % HMX, 4.5 wt % estane binder). The transition was recorded using embedded electromagnetic particle velocity gauges. Initial shock pressures, P, ranged from 2.5 to 8 GPa and the resulting distances to detonation, xD, were in the range 1.9 to 14 mm. Numerical simulations of the experiments were carried out using a reactive burn model consisting of a linear US − up / Mie-Grueneisen equation of state for the reactant, a JWL equation of state for the products, and a SURF inspired reactive burn scheme. A preliminary reactive burn parameter set is presented.