Abstract
The present study investigates mode of failure and energy absorption in impact of 1 mm thick Al 1100 H12 monolithic and double layered targets of 0.5 mm thickness in-contact with each other. The 255 mm span diameter circular targets were impacted by EN-24 steel ogive nosed projectile of 19 mm diameter and 52.5 g mass at different angles of incidence viz., 0o, 30o, 45o. Three dimensional modelling of targets and projectiles were carried out in ABAQUS/CAE module. The targets were modelled as a deformable body whereas, rigid body behavior was assumed for the projectiles due to negligible deformation observed in impact. ABAQUS/Explicit solver was used to simulate all the problems and results were discussed in terms of ballistic resistance, failure mode of the target and energy absorption during the impact.
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