Title
Experimental observations and computer simulations of spherical aluminum-alloy projectiles impacting plane limestone targets
Publication Date
2002
Document Type
Article
Abstract
The stress distribution within spherical aluminum-alloy (2024) projectiles impacting plane limestone (calcite) targets was observed by converting residual microhardness maps obtained for cross-sections of recovered projectiles impacting from 0.8 to 1.3 km/s. A maximum residual yield stress zone was observed to migrate toward the rear of the impacting projectiles with increasing impact velocity. The maximum occurred at a normalized depth z′/am ≅ 0.5 (where am is the contact radius); consistent with the theoretical result for elastic impacts. Computer simulations showed good agreement with experiment, and demonstrated that elastic assumptions were valid well into the plastic deformation regime.
Comments
Randrianarivony, F.M., Lair, S., Quinones, S.A. et al. Journal of Materials Science (2002) 37: 5197. https://doi.org/10.1023/A:1021083800238