Study of 10CrNi3MoCu equivalent steel target based on typical impact effect

Based on the dimensional theory and the experimental analysis of split Hopkinson pressure bar on 10CrNi3MoCu and 603 steel, the main dimensionless parameters of dynamic strength and absorbed energy were obtained for the modeling test of maximum penetration depth and critical velocity of projectile impacting on target, and the main dimensionless parameters of hardness and strength were also gained in order to evaluate the projectile structural strength and the ability of resistance of impacting on target. The dynamic strain-stress curves of two types of materials were achieved and the parameters of mechanical properties, including the maximum strain value, the dynamic yield strength, the maximum strength value and deformation energy at different strain rates, were given. The equivalence between 10CrNi3MoCu and 603 with heat treatment was analyzed for different impact effects. The results show that 603A can be substituted for 10CrNi3MoCu as equivalent target in the model tests of maximum penetration depth and critical velocity, but slightly tightened.