Depth of penetration prediction for closed-cell aluminum foam experiencing impact of different shape projectiles

Abstract

In this study, we combined dynamic cavity expansion theory and the Poncelet resistance formula to investigate varying penetration depth of closed-cell aluminum foam impacted by ogival-nose, truncated-ogive nose, and hemispherical-nose projectiles. We employed the explicit finite element program LS-DYNA to predict the penetration depth of projectiles at normal impact. A high-pressure air gun was also used to propel the projectiles. Finally, we compared the results of the theoretical model, experiments, and numerical simulation.