Abstract
This paper presents a numerical investigation of the ballistic performance of monolithic, double- and triple-layered metallic plates made of either steel or aluminium or a combination of these materials, impacted by a 7.62-mm APM2 projectile in the velocity range of 775-950 m/s. Numerical models were developed using the explicit finite element code LS-DYNA. It was found that monolithic plates have a better ballistic performance than that of multi-layered plates made of the same material. This effect diminishes with impact velocity. It was also found that double-layered plates with a thin front plate of aluminium and thick back steel plate exhibit greater resistance than multi-layered steel plates with similar areal density. These predictions indicate that multi-layered targets using different metallic materials should be investigated for improved ballistic performance and weight-savings.
Original language | English |
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Pages (from-to) | 1022-1032 |
Number of pages | 11 |
Journal | International Journal of Impact Engineering |
Volume | 38 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 2011 |
Externally published | Yes |
Keywords
- 7.62-mm APM2 projectile
- Ballistic resistance
- Multi-layered plates
- Numerical simulation