Investigation of high-velocity impact effects on the reduction and absorption of kinetic energy in kevlar layered composite structures

A high-velocity collision caused by a projectile or bullet that causes the target or armour to de-structure, disintegrate, or puncture is known as a ballistic impact. This physical state was purposefully created by combat tanks, artillery, and other handy weapons. This study is to understand the kinetic energy absorption and reduction during the interaction of 5.45×18 Malokalibernyj Pistolentyj Tsentralnogo boya (MPTs) Centerfire bullet on Kevlar Fiber Reinforced Plastic (KFRP) in two cases such as interply spacing targets and water infill targets with three (0.3 mm, 0.4 mm, and 0.5 mm) different KFRP ply thickness and five (0.1 mm to 0.5 mm) interply distance using Finite Element Method (FEM) in ANSYS/Autodyn platform. This ballistic impact is considered with the bullet as projectile at velocity of 350 m/s and KFRP combinations with 13 ply and 12 spacing in first case and 12 water infill in second case as target clamped at the edges. The observation and comparison from this analysis put forward that kinetic energy reduction of the projectile depends on ply thickness, projectile and target material and interply spacing and infills of the target when it comes to soft body armour. The highest kinetic energy reduction of the projectile is in 0.3 mm KFRP with 0.5 mm interply spacing target and highest kinetic energy absorption is in 0.5 mm KFRP with 0.1 mm interply spacing target.