Abstract
In this article, a closed-form rigorous original solution for interfacial stresses in simply supported beams strengthened with bonded prestressed fiber-reinforced polymer (FRP) plates and subjected to a uniformly distributed load, is developed using an improved new model shear deformation coupled with the prestressed force effect. The main interest of this research puts in evidence a new originality approach theory, taking into account the mechanical load, the shear deformation of adherends, and the prestressed FRP plate model with a new shear lag model, which considers a strength rigidity and resistance of the damaged structures, which is one aspect that has not been taken into account by the previous studies. A parametric study has been conducted on factors such as laminate and adhesive stiffness and the thickness of the laminate and the adhesive, where all of them were found to have a marked effect on the magnitude of maximum shear and normal stress.
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