Finite Element Simulation of Impact on Metal Plate

This paper studies the impact of bullet with aluminum alloy plate fixed on all sides. Simulations were carried out to study effect of bullet impact angle and thickness of aluminium alloy plates. These simulations were performed using Finite Element Method implemented through Ansys Workbench. The target plate was struck at 0°, 15°, 30° and 45° obliquely and the impact velocity was 830 m/s in all tests. The results showed a critical oblique angle, which comes out to be 45°, at which the penetration process changes from perforation to ricochet. The other simulation was done to determine the thickness of the plate at which the penetration process changes from perforation to embedment. Simulation was done for plate thickness of 2 mm, 6 mm, 10 mm, 15 mm, 20 mm and 30 mm. It was observed that for thickness of 18 mm and above, complete penetration does not occur.