Critical velocities for deflagration and detonation triggered by voids in a REBO high explosive

  title={Critical velocities for deflagration and detonation triggered by voids in a REBO high explosive},
  author={S. Davis Herring and Timothy C. Germann and Niels Gr{\o}nbech-Jensen},
The effects of circular voids on the shock sensitivity of a two-dimensional model high explosive crystal are considered. We simulate a piston impact using molecular dynamics simulations with a Reactive Empirical Bond Order (REBO) model potential for a sub-micron, sub-ns exothermic reaction in a diatomic molecular solid. The probability of initiating chemical reactions is found to rise more suddenly with increasing piston velocity for larger voids that collapse more deterministically. A void… Expand
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