Impact of the 7.62-mm APM2 projectile against the edge of a metallic target

The core of the 7.62-mm, armor-piercing APM2 projectile is very strong, but also brittle. A combined analytical, numerical and experimental investigat ion examined the conditions to fracture the core. The analytical model is b ased on a Timoshenko beam analysis, where the projectile is idealized as a semi-infinite cylinder. A 3-D numerical model of the core, impacting agains t the edge of a metallic plate, was then used to investigate transient effe cts, the influence of constitutive model assumptions, and the influence of target properties on the magnitude of projectile bending strains. Results a re then compared to experimental data. Numerical simulations of the full (j acketed) projectile were also investigated. and it is demonstrated that the erosion strain of the jacket is a critical parameter for successful simula tions. (C) 2001 Elsevier Science Ltd. All rights reserved.