On the role of material constitutive relations in long rod penetration mechanics

摘要

Two dimensional numerical simulations were performed in order to uncover the role of constitutive properties of both penetrator and target, on the penetration process of long rods. It was found that a maximum strain to failure criterion can simulate the effects of adiabatic shearing of the penetrator nose, accounting for the DU superiority over WA rods. Moreover, recent results with extremely strong rods, can be simulated with proper strength and failure values for both penetrator and target.