Analytical Summary. Part 4. The Theory of Armor Penetration
NAVAL PROVING GROUND DAHLGREN VA
Pagination or Media Count:
The major phenomena of armor penetration are described. Formulae for elastic undulations in a thin membrane and a thick plate are combined into a simple formula whose algebraic form is consistent with direct experiments on elastic undulations in plates of intermediate thickness. Force-penetration curves for 3 AP M79 projectiles are derived from the depth of penetration of projectiles into homogeneous plate at impact velocities less than the limit velocity. The force-penetration curves are used in the qualitative analysis of plate boundary effects, and are used in the determination of the distribution of impact energy between the elastic undulation in the plate and the plastic deformation near the impact. A theory is developed to represent the limiting case of thin and thick plates.