In the present work, a new model of the FRP-concrete or masonry interface, which accounts for the coupling occurring between the degradation of the cohesive material and the FRP-body interface, is presented. A nonlocal damage and plasticity model is developed for the quasi-brittle material; a model which accounts for damage, unilateral contact and friction effects is developed for the interface. Two different ways of performing the coupling between the body damage and the interface damage are proposed and compared. Some numerical applications are carried out in order to assess the performances of the proposed model in reproducing the mechanical behavior of the masonry material strengthened with external FRP reinforcements.

A coupled interface-body nonlocal damage model for the analysis of frp strengthening detachment

MARFIA, Sonia;SACCO, Elio;TOTI, Jessica
2013

Abstract

In the present work, a new model of the FRP-concrete or masonry interface, which accounts for the coupling occurring between the degradation of the cohesive material and the FRP-body interface, is presented. A nonlocal damage and plasticity model is developed for the quasi-brittle material; a model which accounts for damage, unilateral contact and friction effects is developed for the interface. Two different ways of performing the coupling between the body damage and the interface damage are proposed and compared. Some numerical applications are carried out in order to assess the performances of the proposed model in reproducing the mechanical behavior of the masonry material strengthened with external FRP reinforcements.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11580/27899
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