Quantifying the Shock Induced Response of a Twin-Pore Arrangement in HMX

In this study, we investigate the simulated shock induced decomposition of two circular pore structures within a HMX slab, with particular interest in the influence of the spatial arrangement of the two pores. Multiple simulations are conducted in the Eulerian hydrocode CTH to predict the temperature, pressure, and decomposition of material induced by a 10 GPa planar shock interacting with two pore structures over a range of spatial arrangements. The twin pores are positioned at varying distances and angles with respect to the shock front to quantify the effect of spatial arrangement on extent of reaction. Specifically, the minimum distance required such that the twin pore response approaches that of separated non-connected collapse events will be investigated. This information combined with detailed predictions of isolated pore behavior containing complex shape information can yield "influence" or "amplification" mapping tools to estimate the integrated sensitivity of a material exhibiting complex microstructure.