杀爆战斗部破片和冲击波对目标的耦合作用

In order to comprehend the coupling mechanism of fragments and shock wave when the blast-fragmentation warhead acts on the target, the influence of action time sequence on coupling was analyzed, and the coupling coefficients of the deflection gain of the plate central point with holes relative to the plate without holes under the blast loading were given through dimensional analysis. The plastic deformation of flat plate with prefabricated hole and without hole under the action of blast wave was simulated by AUTODYN software, and was verified by experiments. Based on the results of numerical simulation, a coupling action model was constructed, and the coupling damage calculation formula of the warhead to typical targets was also proposed. The established formula was used to evaluate the damage of the typical target in a blast warhead. The results show that the deflection of the central point of the plate changes unobviously in the premise of low perforation density. However, with the increase of the perforation density and diameter of the fragments, the deflection gain of the central point of the plate also increases, and the deflection gain of the plate central point is positively correlated with the hole density and diameter. The killing radius of the combined damage model is higher than that of the independent damage model, and the maximum increase can reach 9.5%.