A NUMERICAL SIMULATION VALIDATION STUDY: HIGH-VELOCITY BLUNT PROJECTILE IMPACTS ON 2024-T351 ALUMINUM ALLOY PLATES OF VARYING THICKNESSES

Abstract

In this current study, a numerical simulation approach is employed to investigate the post-impact behaviours of a blunt cylindrical projectile colliding with a fully clamped and bolted square plate made of 2024-T351 aluminium alloy. The plate has a circular perimeter with a diameter of 116 mm, and its top surface is oriented at a right angle to the incoming projectile. Various initial velocities are applied to rigid projectiles, which impact plates of thicknesses ranging from 2 mm to 8 mm, all made from 2024-T351 aluminium alloy. A total of forty-four numerical simulation analyses are conducted to study the impacts of blunt cylindrical projectiles on these aluminium alloy plates. The results show excellent agreement with an average difference of 15.04 % when compared to published experimental test data, validating the accuracy of the numerical simulations.