Implications of Solvent Inclusions on Shock Initiation of HMX

We have detected and propose a plausible understanding of the impacts of solvent entrapment in HMX. Solvent inclusions can have significant impacts on aging and performance, as observed with RDX. In HMX, it was determined that solvent inclusions generate tortuous void structures. The structures are on the scale which may impact the initiation behavior and performance. A detailed look at the solvent inclusions revealed buoyant bubbles which orient themselves depending on the crystal position. Impacts of these findings have been systematically studied using CTH modeling and simulations. Overall results are described with potential impacts on initiation.