多元混合PBX炸药冲击起爆的多元Duan-Zhang-Kim反应速率模型研究

This paper offers a new method for calculating the reaction rate of the pore collapse hot-spot ignition in multi-component PBX explosives, and proposes a new mesoscopic reaction rate model capable of describing and predicting the shock initiation and detonation behavior of multi-component PBX explosives with any explosive components proportion as well as any explosive particle size. The pressure-time histories in the explosive samples calculated using this mesoscopic reaction rate model are in good agreement with the experimental data. The shock initiation and detonation process of PBX explosives is mainly controlled by both the hot-spot ignition processes and the combustion reaction processes. The PBXC03 explosive with the dominant component of HMX is mainly controlled by the hot-spot ignition and shows the accelerated reaction characteristics. With the dominant component of insensitive TATB, the critical initiation pressure of PBXC10 is high and the shock initiation behavior is controlled by the combustion reaction process, which shows a stable reaction characteristics.