A numerical evaluation of the interlaminar stress state in externally FRP plated RC beams

Debonding failure modes of flexural FRP-strengthened RC beams

“…Eq. (6) is not valid at the plate end because of different boundary conditions at the free edges of the plate, that cause interfacial normal and shear stress concentrations at the end of the plate. The interfacial stresses at the plate end have been calculated by various people such as Roberts and HajiKazemi [3], Taljsten [24], Malek et al [25] and Smith and Teng [26].…”

“…The second debonding failure type is plate end debonding which starts at the ends of the plate and propagates along the beam. There has been a significant amount of research on this failure mode, which has resulted in closed-form elastic solutions for interfacial stresses [3][4][5][6], analytical design guidelines for end anchorage [7,8] and nonlinear finite element modelling [9,10]. A complete bond model has been proposed by Neubauer and Rostasy [11,31] in order to check debonding at all vulnerable locations of the strengthened beam.…”

Constitutive modelling of ductile damage matrix reinforced by platelets-like particles with imperfect interfaces: Application to graphene polymer nanocomposite materials

“…Newton-Raphson technique is used to solve the above non-linear equations (30). More technical details about this resolution can be found in [34].…”

“…Springs like zero-thickness interface model based on bilateral, independent elastic springs has been developed by Mancusi et al [29] to study the influence of the debonding in the torsional strengthening and the local interactions between a reinforced concrete beams and layers of fibre-reinforced composite reinforcement. Works by Ascione et al [30] to predict the actual stress state at the interface between concrete core and reinforcing plate should be cited. Herein, LSM is very attractive for its simplicity and flexibility to treat imperfect interface with limited number of model parameters [31].…”

Numerical experimental analysis of hybrid double lap aluminum-CFRP joints

“…Several interesting studies on bonded and bolted joints between composite laminates and civil structures have been carried out by Ascione, Feo et al [19][20][21][22], by considering both RC and metal beams.…”