Research on the Low-Penetrating Bullets Entering Water

In order to reduce the bullet destruction, the design of shrapnel, a new type of bullet based on the standard small bore bullet, is proposed.We performed the experiment of water penetration of the shrapnel to study the deformation of the projectile head at different speeds, and conducted the corresponding numerical simulation using LS-DYNA and obtained the projectile's velocity attenuation and displacement curve.The results show that the degree of deformation of the projectile's head is related to its speed, the higher the speed, the greater the warhead deformation.The warhead cracking into "petals" can effectively reduce the bullet velocity, and raise the penetration resistance.The displacement in high speed penetration is less than that in low speed penetration, which indicates that the shrapnel has a good low-penetrating characteristic.