New approaches are presented for possible improvements of current methodology used in handling of the detonation properties and detonability: 1) Adoption of the specific explosion energy as the key parameter; and 2) Identifying the root mean square velocity in reacted detonation front as the particle velocity. Calculated results of detonation pressure and particle velocity agree well with literature reported data for 14-out-of-18 well-known HE materials studied. Notable deviated from the detonation velocities reported in literatures is due to the uncertainties in the Rankine-Hugonoit D-u relation, but can be offset by adjusting the effective sonic velocity values. Detonability of the compositions studied is evaluated by using the established decomposition kinetic parameters. The results are in agreement with the literature reported data. Two typical solid propellant compositions are examined. It appears the approach may be applied to help the understanding of their detonation behaviors. Evaluations of detonability for three compositions, HNS, TNT and AN, are inconclusive due to the out-of-the-family data from literatures is used for input. Effects of inert additives and porosity are modeled successfully. The steady-state detonation appears in favor of being treated as a 1-D propagation phenomenon and the 3-D reaction is more fit for the detonation where the input shock is in the weak detonation transient condition. A number of possible further improvements, both theoretically and experimentally, are identified and discussed.
展开▼
