A Projectile Penetration Theory for Layered Targets
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
Pagination or Media Count:
Projectile penetration was studied. Empirical equations describing the axial force which opposes the motion of a rigid projectile as it passes through a deformable solid target were developed. Experimental data consisting of impact velocity and final depth of penetration were used to estimate the coefficients in the relation between axial force and projectile velocity. However, these coefficients were not specified in terms of standard material properties, and so they were applicable only for the particular targets for which they were determined. In the present work, the quasistatic expansion of a spherical cavity in a concentrically layered medium will be analyzed in order to obtain an approximation for the radial stress at the surface of a slowly expanding spherical cavity in a vertically layered medium with a plane interface. This approximation will then be used to construct a simple equation of motion for a rigid cylindrical projectile with a conical or ogival nose shape which penetrates a layered target.
- Ammunition and Explosives