Model Calculations and Experimental Measurements of the Response of HMX Porous Beds to Deflagration and Shock.

摘要

The experimental research on the response of porous beds of HMX has yielded a body of evidence which includes accurate measurements of gas flow, compaction ratio, detonation transit distance and time. As the experimental research has progressed, we have developed a 1D numerical model (1DUCT) to describe this response in a special hydrodynamic code in which the gas phase is allowed to flow through a solid phase. Gas phase relative velocity is limited to be subsonic. In addition we have developed special constitutive and fluid EOS models (2DUCT) for use with the 2D Lagrange hydrocode, DYNA2D, in which there is no cell to cell gas phase mass transfer. Our study strategy was to analyze several, very different experiments to derive values of phenomenological parameters in the model. These experiments include squib ignited events where relative gas flow is important and compression ignition tests where it is not. 26 refs., 18 figs.