3D-RBSM: A New Mesoscale Discrete Approach for FRP-Concrete Interfacial Simulation

A reliable numerical simulation is one of the major challenges in analyzing the bond behavior between fiber reinforced polymer (FRP) sheets/laminates and concrete. This paper presents a recent developed rational simulation method by the authors based on the 3D rigid body spring model (RBSM). In the developed mesoscale simulation method, all the parameters used were proposed with clear and precise physical meanings and straightforward calculation methods. The reasonable and accurate results from of simulation are in good agreement with both the experimental results and finite element (FE) outputs. The proposed method provides a superior and effective alternative to conventional FE approaches for the analysis of FRP-strengthened concrete structures.