刚性钝头弹体正冲击GH4169间隔靶的消耗功分析

At the initial velocity range of 380~680 m/s, positive impact on GH4169 spacer plates by 8 mm diameter tungsten spheres was performed, measuring the initial velocity, residual velocity and deflection. It is obvious that the first plate is mainly subjected to shear damage and ejected cup-shaped plug, the third plate is mainly subjected to tensile failure, and the deflection of the third plate is significantly greater than the first plate. The calculation formula for the consumption work of the spacer plates is established, the consumption work of each plates impacted by projectiles is calculated by combining the shear plugging model and the plug velocity model. The results show that the unit area density consumption work of the second and third plates is much higher than that of the first plate, which is closely related to the deformation and failure modes of the plates. Consumption work can be used to quantitatively describe the ballistic resistance of each plate.