Experimental Studies on Failure Mode of Low Speed Projectilesby Local Modification on Steel Plates

In this work different modification features were designed for the study of the fracture characteristic and mass abrasion of projectiles with local modification, normal impact experiments were performed on typical RHA targets at velocities ranging from 380 to 500 m/s, and the failure mode and mass loss of the penetrating projectile were examined.The results show that the length eroding and mass loss of the projectile increase as the impact velocity increases, yet the variation of the diameter eroding is small.The failure mode of the projectiles is mainly shear fracture, and the macroscopic damage degree of the projectiles by local modification processes is comparable to that of the unmodified projectiles, of which the main structure and modification parts remain stable.The local modification ① and ⑤ with better fragmentation performance can prevent the damage from occurring during ballistic impacts.