Projectile Penetration Analysis in Armour Using Finite Element Method

摘要

In the last few decades, non-metallic materials, such as ceramics and composites, have been increasingly incorporated into more efficient lightweight armour. Ceramic backed by composite material armour is becoming the subject of many investigations because their performance against small and medium caliber projectiles is outstanding, especially when the weight is a design condition, for instance in light weight vehicles, airplane and helicopter protection or body armour. In the present work, armour with constant thickness has been taken for the analysis. The armour consists of two layers; one is a ceramic material layer and the other is a composite material layer. Three-dimensional finite element models of ceramic-composite armour subjected to normal and oblique impacts by projectile developed using HYPERMESH pre-processing software. The numerical analysis of non-linear impact and penetration was performed using the explicit non-linear finite element software LS-DYNA, which is dedicated to the analysis of dynamic problems associated with large deformation, low and high-velocity impact, ballistic penetration and wave propagation, etc. The analysis results for oblique and normal projectile impact are compared.