This work presents a lattice–particle model for the analysis of steel fiber-reinforced concrete(SFRC). In this approach, fibers are explicitly modeled and connected to the concrete matrix lattice viainterface elements. The interface behavior was calibrated by means of pullout tests and a range forthe bond properties is proposed. The model was validated with analytical and experimental resultsunder uniaxial tension and compression, demonstrating the ability of the model to correctly describethe effect of fiber volume fraction and distribution on fracture properties of SFRC. The lattice–particlemodel was integrated into a hierarchical homogenization-based scheme in which macroscopicmaterial parameters are obtained from mesoscale simulations. Moreover, a representative volumeelement (RVE) analysis was carried out and the results shows that such an RVE does exist in thepost-peak regime and until localization takes place. Finally, the multiscale upscaling strategy wassuccessfully validated with three-point bending tests.
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