<p>A better understanding of the behavior of reinforced concrete requires nonlinear analysis, due to the nonlinearity of the matrix and reinforcement (concrete and steel). By modeling the behavior of steel-concrete material under static and monotonic loading using damage mechanics, we were able to deduce the evolution of its mechanical characteristics in the nonlinear domain, based on existing physical and mechanical phenomena. This approach led to the proposal of an initial model for predicting the nonlinear behavior of concrete up to failure. This idea was then developed and extended to reinforced concrete structures. The proposed model considers the mechanical characteristics of homogenized reinforced concrete in the nonlinear domain as variables. Two independent damage variables are then deduced and applied to the material: a deviatoric variable and a volumetric variable. The first affects the Young’s modulus of homogenized reinforced concrete, while the second affects the Poisson’s ratio. The model then takes into account the confinement of the concrete, the shear, the percentage of steel, and the geometry of the reinforced concrete element (beam with or without transverse reinforcement, three- or four-point beam, or wall). This contribution aims to demonstrate the impact of applying damage mechanics to track the nonlinear behavior of reinforced concrete structures, and shows that the introduction of damage variables with the ductility factor, which reflects the contribution of the concrete stretched between two cracks, has a considerable influence on the model results. This makes it possible to track the actual behavior of reinforced concrete elements up to failure.</p>