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Artículo

A modified Duvaut-Lions zero-thickness interface model for simulating the rate-dependent bond behavior of FRP-concrete joints

Caggiano, AntonioIcon ; Martinelli, Enzo; Schicchi, Diego Said; Etse, Jose GuillermoIcon
Fecha de publicación: 09/2018
Editorial: Elsevier
Revista: Composites Part B: Engineering
ISSN: 1359-8368
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ingeniería Civil

Resumen

This paper proposes a model aimed at simulating the strain-rate effect in Fiber Reinforced Polymer (FRP) strips glued to concrete. More specifically, the loading rate-dependent bond mechanisms are evaluated by extending a classical overstress viscoplastic approach, available in the literature, generally referred to as Duvaut-Lions’ approach. The model is formulated within the general theoretical framework of fracture mechanics under the assumption that debonding occurs as a pure mode II cracking process. Zero-thickness interface elements were employed for implementing the aforementioned FRP-to-concrete joint model. From the conceptual viewpoint, the model is used in an incremental analysis and the debonding phenomenon is simulated as a propagating fracture whose local residual stress is described by the decreasing branch of a bond-slip law assumed “a priori”. The mechanical soundness of the proposed model is demonstrated by the very good agreement between some experimental results, taken from the scientific literature, and the corresponding numerical predictions at significantly diverse loading rates ranging from 0.07 to 70 mm/s.
Palabras clave: EXTENDED DUVAUT-LIONS , FRACTURE-BASED MODEL , FRP , PULL-OFF , VISCO-PLASTICITY
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/88100
URL: https://www.sciencedirect.com/science/article/pii/S1359836818305390
DOI: http://dx.doi.org/10.1016/j.compositesb.2018.05.010
Colecciones
Articulos(INTECIN)
Articulos de INST.D/TEC.Y CS.DE LA ING."HILARIO FERNANDEZ LONG"
Citación
Caggiano, Antonio; Martinelli, Enzo; Schicchi, Diego Said; Etse, Jose Guillermo; A modified Duvaut-Lions zero-thickness interface model for simulating the rate-dependent bond behavior of FRP-concrete joints; Elsevier; Composites Part B: Engineering; 149; 9-2018; 260-267
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