Modeling Studies of the Performance Characteristics of Composite Explosives

摘要

A model for the initiation and detonation of composite explosives is proposed which considers both monopropellant and fuel-oxidizer reactions. This reactive model has been incorporated into an Eulerian hydrocode and used to simulate experimental results on composite explosives. The model accounts for variations in composition without the need to readjust rate parameters for each new mixture studied. A limited comparison shows that the calculated failure diameter as a function of composition is in reasonable agreement with experimental results. Calculations of idealized, representative systems indicate that a two-mode detonation behavior is unlikely, since the components interact strongly through the pressure dependent deflagration rate law. The calculations also show that either large transport coefficients or very small particle sizes are required to extract the energy of fuel-oxidizer mixtures in time to contribute effectively to explosive performance. (ERA citation 06:024112)