In this study, a peridynamic fiber-reinforced concrete model is developed based on the bond-based peridynamic model with rotation effect (BBPDR). The fibers are modelled by a semi-discrete method and distributed with random locations and angles in the concrete specimen, since the fiber content is low, and its scale is smaller than the concrete matrix. The interactions between fibers and concrete matrix are investigated by the improvement of the bond’s strength and stiffness. Also, the frictional effect between the fibers and the concrete matrix is considered, which is divided into static friction and slip friction. To validate the proposed model, several examples are simulated, including the tensile test and the three-point bending beam test. And the numerical results of the proposed model are compared with the experiments and other numerical models. The comparisons show that the proposed model is capable of simulating the fracture behavior of the fiber-reinforced concrete. After adding the fibers, the tensile strength, bending strength, and toughness of the fiber-reinforced concrete specimens are improved. Besides, the fibers distribution has an impact on the crack path, especially in the three-point bending beam test.

Peridynamics; fiber-reinforced concrete; fracture mechanics; numerical simulation; three-point bending beam