抄録
To explore the shock wave initiation capacity of typical energetic materials, an improved gap test is used to study the critical shock wave initiation pressure of three typical energetic materials, including RDX-based mixed explosives, HMXbased mixed explosives, and RDX/AP/Al-based mixed explosives. The equivalent contrast of the critical initiation capacity of typical energetic materials with TNT is conducted. The results show that the equivalent ratios of the critical initiation pressure of TNT for RDX-based and HMX-based mixed explosives are less than 1, which means that their shock wave sensitivity and initiation capacity are higher than TNT. However, the shock wave initiation capacity of RDX/AP/Al-based propellant mixed explosive is not up to that of TNT. In addition, to further clarify the dynamic change of the shock initiation process, the shock wave initiation of the RDX-based mixture is selected to perform a numerical simulation. The results show that when the pressure is greater than the critical pressure, a detonation growth process to achieve complete detonation is experienced after the shock wave passes through the gaps and enters the explosive. Therefore, the research results can provide basic data for the critical shock wave initiation capacity of energetic materials.
