Conclusion
A numerical simulation of the penetration of a highvelocity impact through a reinforced concrete panel was simulated in this work. Because of the neglected effects of the steel reinforcement on the impact resistance of reinforced concrete structures, the simulated target was considered as plain concrete. The concrete material was modeled using the Johnson–Holmquist damage model (JH-2), and the steel ogive-nosed projectile used was simulated as a rigid body with a mass of 0.386 kg assigned at a reference point. The variations in velocity at different points of the projectile and concrete panel, as well as the damage and pressure, were evaluated. Analyses of the internal energy of the concrete panel and the kinetic energy of the steel projectile were also conducted. The kinetic energy of the projectile was shown to decrease, and once the projectile penetrates into the concrete panel, the panel tended to absorb the energy of the projectile, and thus enhancing stability of the projectile. It was found that the results of the kinetic and internal energies fit the results of the damage and pressure in terms of the penetration time of the projectile into the concrete panel as well as the impact behavior. It was shown that the Johnson–Holmquist damage model (JH-2) can be utilized to describe the impact behavior of a plain concrete panel. Future work may focus on an analysis of the influence of the spatial and time discretizations, and the uncertain input parameters on the results of the impact modeling.
