Parameter analysis that affects the ability to resistance penetration of ammunition on the aluminum armor surface using finite element method

Abstract

This research analyzes the parameters affecting the penetrating resistance of shells on the armor surface by the finite element method. In this study, the results were compared with real bulletproof armor firing tests and finite element simulations. modeling of bulletproof armor using Solid Works program. Creating and simulating armor firing pattern using ANSYS Explicit Dynamic program. damage test is based on National Institute of Justice level 3 standards with material of the ammunition is 7.62 mm tungsten carbide (WC) and speed 847 + 9.1m/s. there are two types of bulletproof armor used in this simulation 1. SKD11 2. Aluminum AL7075. The simulations is into 1 category Simulation of stacked armor plates. The sizes of the armor plates are 6, 8, and 10 mm, and the angles of firing of bulletproof armor are 0, 30 and 45 degrees. result of this simulation, armor thickness and firing angle are factors of penetration resistance. when the angle of the projectile is tilted, it will cause the projectile to deflect, reducing the frictional contact from the impact.