Viscosity and heat conduction effects in pore collapse

Determination of the Mechanical and Thermal Properties, and Impact Sensitivity of Pressed HMX-based PBX

“…At the same porosity, size reduction leads to smaller pore sizes and larger pore numbers. Numerical simulation studies [24,25] have concluded that the critical temperature and pressure for initiation increases exponentially with a decrease in pore size, i.e. small pores are more difficult to initiate.…”