关键词: 爆炸力学, 铝薄膜炸药, 含铝炸药, 非理想炸药, 比冲击波能, 比气泡能, 比爆炸能

Abstract: To reduce environmental pollution in the production process and impact sensitivity and improve the formability and mechanical properties of aluminized explosives, a new explosive is obtained by hierarchically packaging RDX. Pressure-time curves of aluminum film explosive and traditional aluminized explosives based on RDX were determined by underwater explosion experiments. Explosion energy and detonation velocity of aluminum film explosive and aluminized explosive were obtained by analyzing the curves, and their differences were examined. The results show that the structure of aluminum film explosive is that RDX and aluminum film are connected independently along the axial direction, which is beneficial to minimize the impact that additive impedes transmission of detonation wave. The detonation velocity of the new explosive is greater than that of aluminum particle explosive, so the shock loss coefficient of aluminum film explosive is greater. Compared to aluminum particle explosive, the shock wave energy of aluminum film explosive is decreased by 10.16%—10.33%, while its explosion energy and impulse nearly equal to those of aluminum particle explosive. The calculation proves that the C-J pressure formula of aluminum film explosive is reasonable.

Key words: mechanics of explosion, aluminum film explosive, aluminized explosives, non-ideal explosives, specific shock energy, specific bubble energy, specific explosion energy