Reinforced concrete perforation and penetration simulation using AUTODYN-3D

3D hydrocode simulation on the perforation and penetration of reinforced concrete target has been performed. The simulation aims to examine the influence of the following constitutive models for concrete on a projectile's residual velocity: (1) constant-yield strength (2) pressure-dependent yield strength (3) pressure-dependent yield strength +fracture damage+ strain-rate hardening. In the simulation, steel ogival-nose projectile with a diameter of 25.4 mm and a mass of 0.5 kg is fired against 406.4 x 406.4 x 178 mm reinforced concrete target with striking velocity ranging from 300 m/s to 1000 m/s. The results obtained from the simulation are compared with experimental residual velocities and post-test damage results. The result from the constitutive model that includes strain-rate and damage with a pressure-dependent yield surface shows relatively good agreement with experimental residual velocities. The damage contours at the impact and exit surface from the simulation are also consistent with the post-test damage results. (c) 2005 Elsevier B.V. All rights reserved.