Resistance of High-Performance Concrete Panels with Dispersed Fiber Reinforcement to Oblique-Angle Projectile Impact

This work aims to investigate the effect of a wide range of oblique impacts of the 7.62-mm-caliber projectile on the slim high-performance fiber-reinforced concrete (HPFRC) panels. The trajectory of the projectile, the depth of penetration, and the extent and type of plate damage are discussed in detail. The numerical models developed in commercially available software are also included in this work to support and supplement the experimental data. In the model, each fiber is modeled separately, leading to a more realistic prediction of the material behavior. The analyses identified four basic scenarios for projectile impact: total plate perforation by the projectile core, core penetration combined with or without rear HPFRC material detachment, and ricochet. The results show that the numerical model can effectively and accurately predict the impact response and damage morphologies of the slim HPFRC panel.