An Numerical Investigation on the Penetration Of Thin Aluminum Targets By Blunt, Hemispherical and Conical Nose-Shaped Projectiles

In this paper numerical study on the penetration of aluminum targets with a thickness of 1 mm by projectiles with three types of nose shape، blunt، hemispherical and conical presented. Targets penetrate at different impact speed and initial velocity and residual velocity of the projectiles were measured. In additionto measuring ballistic limit، effect of projectile nose shape on the deformation of target plates was also studied. According to researches results the ballistic limit of cylindro-hemispherical projectiles is more than cylindricalprojectiles and also cylindro-conical projectiles has minimum ballistic limit. Numerical simulationfrom LS-DYNA are compared with Experimental results، that show good agreement between the experimental and numerical data.