Oblique impact studies of tungsten sinter alloys projectile into AISI 4340 alloy steel plate

摘要

The perforation behaviors of AISI 4340 alloy steel impacted by hemispherical-tipped tungsten sinter alloys projectile are studied and simulated with LS-DYNA. The projectile impacts AISI 4340 thin plate in oblique conditions with the angles of incidence changing from 30 deg, 45 deg to 60 deg. In each incident angle, the impact velocity varies from 0.5 km/s, 1.0 km/s to 2.0 km/s. The results show that both the velocity and angle take obvious effects on plate deformation and perforation behavior. At the impact velocity of 0.5 km/s, the projectile embeds and ricochets according to the obliquity.