炸药抗过载性能试验方法

The test and characterization of the anti-overload performance of the explosives are important basis for the selection of penetrating warhead charge. Based on the single-degree-of-freedom forced vibration model, a testing device for the anti-overload performance of explosives is set up, the mechanical environment and deformation characteristics of explosive charges in the process of warhead penetration are simulated. Then we propose a method for characterizing the anti-overload performance, which is the explosive charge ignition criterion ∫ σdσ(σ and σ are stress and stress rate respectively), and obtain a method for characterizing overload resistance of explosives. The device is used to test the anti-overload performance of three typical DNAN-based insensitive penetrating melt cast explosives, and obtain that their ignition thresholds are 1. 8 GPa^2/ ms, 2. 2 GPa² / ms and 3. 3 GPa² / ms. Then, the flat-nosed projectile penetration test is employed to verify the anti-overload performance of the above three explosives. The results show that the anti-overload performance test and the flat-nosed projectile penetration test deliver consistent results, indicating that the test method and the device for the anti-overload performance of explosives are scientifically effective in selecting penetrating warhead charges.