P. Vasundhra,G. Moorthy,G. Boopathi, M. Vigneshwaran,K. Soosaimuthu,M.A. Muthu Manickam,V. Balaguru,




Ballistic impact, 7.62mm armour piercing projectile,high hardness steel,armour plate,finite element modelling,Johnson-Cook strength, failure,


Rolled Homogenous Armour steel is an attractive candidate for use as armour because of its high hardness compared to other steel grades. The ballistic behavior of RHA is appraised using depth of penetration (DOP)and ballistic limit velocity V50against 7.62mm armour piercing (AP) Projectile with the hardened steel core. The ballistic potency of the material is calculated by studying the influence of variation in thickness of plates and the projectile velocity. Velocity in the range of 400 to 854m/s is considered in the present analysis, based on the plate thickness. In the present study, a modified simple projectile simulation model which represents a 7.62 mm AP projectile is developed. Based on this, the DOP studies are done for three different plate thicknesses. Further, the ballistic limit velocity V50 is obtained for various plate thicknessesby conducting a series of simulations using finite element based explicit dynamic solver.The obtained numerical results are compared with available benchmark experiments


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