First-Order Approximations of Dynamic Material Strengths for the Ballistic Perforation of Aluminum Target Plates

Perforation of aluminum alloy target plates by armor-piercing rounds have been shown to follow the cavity expansion scaling law, while fragment-simulating projectiles follow a shear-plugging scaling law. In both models, experimental compressive stress–strain data is needed to derive their respective material strength parameters, which are not always available. By comparison, modified Ludwik plasticity parameters are more widely available in...