Study on Propagation and Distribution Characteristics of Explosion Shock Wave Loading on Two Kinds of Explosives inside Cylindrical Device

In order to investigate propagation and distribution characteristics of the explosion shock wave loading of thermobaric explosive and TNT inside cylindrical device, internal explosion experiment of these two explosives are carried out in cylindrical device, propagation characteristics of shock wave are analyzed, distribution characteristics of overpressure and positive pressure impulse of the shock wave about two explosives of same mass are compared on wall and cover in the cylindrical device. The results show that superposition effect is characteristic of the shock wave in cylindrical device, and the superposition effect increases gradually with increase of the distance from explosion center; The superposition effect of thermobaric explosive is more obvious than TNT; The average value of positive pressure impulse of the shock wave on thermobaric explosive increases by 20.3% compared with TNT, this growth is about twice the average value of overpressure peak, and positive pressure impulse of the two explosives tends to increase firstly and then decrease with increase of the distance from explosion center, the rule on thermobaric explosive is more obvious than TNT.