Bullet Impact Analysis of Aluminum and UHMWPE Armor: A Comparative Study with NIJ Context
1. Introduction Ballistic protection remains a critical aspect of modern engineering, particularly in defense and personal safety applications. The effectiveness of armor systems depends not only on their ability to stop projectiles, but also on how they manage and dissipate the immense energy generated during high-velocity impacts. This study presents a numerical analysis of a 7.62 mm projectile impacting two different armor materials Aluminum (Al) and Ultra-High-Molecular-Weight Polyethylene (UHMWPE). While the analysis is simplified, it provides valuable insight into how different materials respond under identical ballistic conditions. To further ground the findings in real-world applications, the results are also compared against established ballistic protection benchmarks such as NIJ Standard-0101.06 and NIJ Standard-0101.07. 2. Projectile Description The projectile used in this simulation is defined as follows: Diameter: 7.62 mm Length: 25.89 mm Material: P...