بررسي تاثير مدل ماده آستر(Liner) در شبيه سازي پرتابه هاي شكل يافته انفجاري(EFP)

Effect of Liner Material Model on Explosively Formed Projectiles (EFP) Simulation

In this paper, the effect of the liner material model on the result of numerical simulation of Explosively Formed Projectile (EFP) is examined. Johnson-Cook, Steinberg, and Zerilli - Armstrong models are used for the simulation. All models are shown that have a good agreement with the experimental results. Zerilli - Armstrong model predicts final EFP shape with more accuracy in comparison with the other models. The results of simulations indicate that Johnson-Cook and Steinberg models predict the projectile length better than Zerilli - Armstrong model. The velocity of projectile predicted by all models agrees well with the experimental measurement.