Pressure-Shear Waves in 6061-T6 Aluminum Due to Oblique-Plate-Impact

Results are reported for experiments employing two types of oblique-plate-impact configurations. One, a symmetric configuration, uses 6061-T6 Aluminum plates for both targets and projectiles. The second, an asymmetric configuration, uses a 6061-T6 Aluminum projectile and a fused silica target. The experimental results are compared to analytical solutions based on an elastic-viscoplastic model for the aluminum alloy and a hyperelastic model for fused silica. The normal velocity-time profile for the symmetric configuration shows close agreement with the predicted one. Results from the asymmetric configuration indicate the utility of using fused silica as a window material for determining the dynamic plastic flow characteristics of the projectile material.