Modeling the Destruction of Heavy Reinforced Concrete Screens Under Impact

This paper presents the results of numerical modeling of the interaction between a cylindrical titanium impactor and barriers made of heavy reinforced concrete at various initial velocities and with different reinforcement configurations involving steel bars and plates of varying geometric characteristics. The numerical modeling was carried out using the finite element method in a three-dimensional formulation with the EFES software package developed by the authors. The Johnson-Holmquist model, which accounts for plasticity, crack development, and damage accumulation in the material, was employed to describe the destruction processes in reinforced concrete. The study investigated the influence of the geometry and configuration of reinforcement on the destruction pattern of reinforced concrete barriers, the extent of damage, and the residual velocity of the impactor. The results obtained can be used to optimize the design of protective structures made of heavy reinforced concrete.