Numerical modeling of FRCM bond behavior on curved substrates via 2D bisection

In recent years, Fiber Reinforced Cementitious Matrix (FRCM) has gained significant attention for reinforcing masonry structures, particularly in the context of historical masonry buildings. Complex debonding mechanisms, driven by the fragile mortar matrix, pose a challenge in these systems. This study extends the classical zero-thickness interface model, typically used for Fiber Reinforced Polymer (FRP) systems, to incorporate the specific complexities of FRCMand considering the failure of multiple components. The impact of interface normal stress is accounted for by adjusting the interface bond-slip law. To solve the mathematical problem describing the debonding problem, a novel numerical procedure based on two-dimensional bisection was proposed. To validate its effectiveness, we compare the obtained global load-slip curves with experimental results, demonstrating good prediction in maximum load and trend.