Investigations on Steel Fibre Reinforced Cementitious Composite Panels under High Velocity Impact of Short Projectiles

Response of steel fibre reinforced cementitious composite (SFRCC) panels subjected to high velocity impact of short projectiles have great significance in designing protective structures. Numerical investigation carried out to determine the high velocity impact responses of SFRCC (300 mm square) panels is presented. In order to model the high velocity impact behaviour of SFRCC in the post peak region, the constitutive model of Riedel, Hiermaier and Thoma (RHT) is used with suitable modification in damage parameters. The numerical studies presented in this paper are validated using the experimental investigations carried out by the authors. The influences of steel fibrevolumes (0, 2, 4, 6, 8, and 10%) and thickness of panels (50, 60, 75, 100 mm), on depth of penetration (DOP) and crater dimensions is also investigated. Based on the numerical simulations, the important phenomenon like scabbing and perforation in the SFRCC panels are predicted for the chosen in-service ammunition (7.62 mm calibre) and munitions (AK - 47 rifle).