Comparison of Mechanical and Constitutive Response for Five Aluminum Alloys for Armor Applications

摘要

There is heightened interest in aluminum alloys for armor applications owing to their low density and reasonable cost compared to alternative metallic armor materials. Five aluminum alloys of interest for vehicle armor applications were evaluated: Al5083-H131, Al5059-H131, Al2139-T8, Al2195-BT and Al2519-T87. The mechanical performance of these five alloys was assessed and compared, based on the results of mechanical characterization tests. The experimental data obtained for each alloy were used to determine constitutive constants for Johnson-Cook strength and failure models. The constitutive constants obtained were validated using numerical simulations and the results of Taylor impact experiments.