A Numerical Study on the Effect of Bond Length on the Bonding Performance of FRP-Concrete Interface
In this paper, the bond length effect of FRP plate on bonding performance and the distribution patterns of the stress in FRP plate was investigated using 3D Realistic Failure Process Analysis (RFPA3D) code to study the debonding mechanism of the FRP plate bonded to concrete block. Numerical simulations show that the progressive debonding of FRP plate bonded to concrete occurs in the concrete on the condition of different bond lengths can be divided into four stages: elastic-deformation stage, elastic-softening stage, elastic-softening-debonding stage and softening-debonding stage. It is also show that the interfacial bond strength and the global slip of FRP-to-concrete increase with the increase of the bond length.
Z. J. He et al., "A Numerical Study on the Effect of Bond Length on the Bonding Performance of FRP-Concrete Interface", Advanced Materials Research, Vols. 268-270, pp. 857-862, 2011