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Discussed with dynamic analysis of finite element program based on AUTODYN of armor-piercing projectile penetrating steel target plate process numerical simulation.Expounds the establishment of the numerical simulation model, and the use of numerical simulation technology, has realized the penetration process of deformation and the destruction of the target board of impact and the fragment, at the same time to the simulation results are analyzed, the simulation results are in conformity with the basic theory and the actual situation.Through the armor-piercing projectile penetrating steel target board numerical simulation of the process, for wearing a warhead wear mechanism and wear armour aftereffect study lay a good foundation.