Low Velocity Projectile Penetration

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Abstract
Rigid right cylindrical projectiles were dropped normally into the sand at velocities less than 25 fps. A relationship between the impact velocity and maximum penetration is obtained by assuming that the kinetic energy lost by the projectile during penetration process is spent on imparting momentum to and overcoming the structural resistance of sand mass. Projectile velocity and deceleration during penetration are also described. Static penetration tests were carried out to determine the coefficients used in the investigation. The experimental and analytical results agree fairly well.

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