Influence of Nose Cabin on Low Speed Blunt Projectile during Penetration of Metal Plate

In order to study the effect of nose cabin on projectile low speed and high mass during the penetration of metal plates, a finite element analysis model of blunt projectile with nose cabin was established. Based on the mechanical properties, nose cabin can be regarded as equivalent to light foam aluminum material. Numerical simulation of blunt projectile with nose cabin penetrates into metal plates under different working conditions were implemented. The progress of projectile with nose cabin penetrates into metal plate was analyzed. The difference between residual velocity of blunt projectile with and without nose cabin was compared. The results show that there are significant differences in the progress of projectiles penetration into metal plates between blunt projectiles with and without nose cabin. Nevertheless, the failure modes for both conditions are similar. The yield stress of equivalent material of nose cabin has limited influence on penetrative performance of projectile. In conclusion, nose cabin can bring very limited improvement to the penetration capability of blunt projectile, and the effect of nose cabin can be neglected in practical engineering applications.