Computational analysis of aluminium alloy plates against conical-nose steel projectile. (2021)

• Record Type: Journal Article
• Authors: Pawar, M.J.; Gautam, Vikash; Kumar, Ashiwani; Kukshal, Vikas
• Is Part Of: Materials today. Volume 46:Part 15(2021)
• Page Start: 6552
• Page End: 6557
• Publication Date: 2021
• Subjects: AA5058 -- Computational analysis -- Projectile -- Ballistic velocity -- Residual velocity; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2021.04.017
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: The usage of aluminium alloy in shielding structures is becoming prevalent choice due to its low density. Even then, articles and reports describing the experimental and computational analysis of such problems are still limited. This paper illustrated the computational analysis of AA5058 against impact of hardened steel projectiles with conical nose. The computational analysis was performed using finite element code-ANSYS. The target plate used was in shape of circular disc of 500 mm diameter and fixed at its curved face. However, wide range of thickness of target plate i.e., 15 mm, 20 mm, 25 mm and 30 mm were considered in the work reported. The projectile considered was of 20 mm diameter and 98 mm long. The conical shape was provided on projectile for 30 mm length on one of its sides. The target material was modeled in finite element code using Johnson-Cook constitutive model. The limiting ballistic velocity of target material was computationally investigated considering initial and residual velocities of projectile. The ballistic limiting velocity for target plate with 15 mm, 20 mm, 25 mm and 30 mm were reported as 214 m/s, 245 m/s, 250 m/s and 300 m/s respectively. Also, the residual velocity for the complete perforation in case of all the variation of thicknesses of target plate was observed and reported. The results obtained from computational analysis were found in good agreement with the analytical model presented elsewhere.