The Influence of the Geometric Curvature on the Mechanical Behaviour of the Adhesive Joint

A mechanical model to study the behaviour of a curve adhesive joint is presented. In order to identify the governing parameters of the joint response, the coupling between shear or flexure and the extensional equilibrium problems, the radius of curvature, the energy mobilization corresponding to the most common cohesive interface laws have been introduced. Such model represents a generalization of a previous one introduced by the same authors relative to joint with straight axis. With reference to a concrete beam reinforcement with FRP, a wide numerical investigation has been developed in order to highlight the influence of radius of curvature in terms of absorbed fracture energy as function of the load level.