Ballistic Response of 2024 Aluminium Plates Against Blunt Nose Projectiles

摘要

Numerical investigations were carried out on 1.27, 3.18, 6.35, 12.7 and 19.05 mm thick 2024-O aluminum target against blunt nose steel projectiles of 12.7 mm diameter and 37.7 gram mass. Three-dimensional numerical simulations of the problem are carried out using finite element code ABAQUS. The ABAQUS/Explicit finite element code in conjunction with Johnson-Cook elasto-viscoplastic material model proposed by Leuser [1] was employed to perform the simulations. The present study is concerned with the measurement of ballistic limit of deformable projectiles. The results obtained were compared with the experimental results conducted by [3-4] and a close correlation between the two was found. The failure mode of the target was also found in good agreement. The results obtained showed a consistent increase in the ballistic resistance of target with an increase in the target thickness.