Explosion Characteristics of RDX‐Based Aluminum Explosives Under Low‐Pressure Environment

ABSTRACTIn order to compare and analyze the implosion power of aluminized explosives under atmospheric and low‐pressure environment, the RDX‐based aluminized explosives are tested under atmospheric and low pressure in the vacuum explosion tank, and then the implosion power of explosives under different conditions is analyzed. The study shows that as the Al content increases from 10% to 30%, the peak overpressure of the shock wave gradually decreases, and the impulse volume gradually increases, because the Al powder in RDX‐based aluminized explosives remain inert in the initial detonation stage. Compared with normal pressure, due to the reduction of air medium in low‐pressure environment, the explosive explosion mainly depends on the expansion of the generated product to promote the propagation of energy, so the energy attenuation is rapid. The deflection of the effector target represents the energy of the initial shock wave, and the experimental results show that the deflection gradually decreases with the initial pressure decreasing from 100 to 40 kPa.