Nonlinear numerical analysis of the debonding failure process of FRP-to-concrete interfaces

Hugo Biscaia; Carlos  Chastre; Manuel Américo Gonçalves da Silva

doi:10.1016/j.compositesb.2013.02.013

Nonlinear numerical analysis of the debonding failure process of FRP-to-concrete interfaces

Hugo Biscaia, Carlos Chastre, Manuel Américo Gonçalves da Silva

Research output: Contribution to journal › Article › peer-review

65 Citations (Scopus)

Abstract

The paper analyses numerical solutions for the process leading to debonding failure of fiber reinforced polymers (FRP)-to-concrete interfaces in shear tests with the FRP plate subjected to a tensile load at one end. Any realistic local nonlinear bond-slip law can be used in the numerical analysis proposed in the present study. However, only a Popovics’ type expression is employed in the numerical process due to its use in different studies found in the literature. Effective bond length (Leff) is discussed and an expression depending on the Popovics’ constant (nP) is proposed to calculate it. Assuming a fracture in pure Mode II, the debonding process is analyzed in detail and distributions of bond stresses and strains in the FRP plate along the interface are presented. The load-displacement behaviour is also presented and the influence of the local bond-slip law on the debonding process is discussed.

Original language	English
Pages (from-to)	210-223
Journal	Composites Part B: Engineering
Volume	50
DOIs	https://doi.org/10.1016/j.compositesb.2013.02.013
Publication status	Published - Jul 2013

Keywords

Laminates
Debonding
Interface
Numerical analysis
Concrete

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10.1016/j.compositesb.2013.02.013Licence: CC BY-NC-ND

Cite this

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title = "Nonlinear numerical analysis of the debonding failure process of FRP-to-concrete interfaces",

abstract = "The paper analyses numerical solutions for the process leading to debonding failure of fiber reinforced polymers (FRP)-to-concrete interfaces in shear tests with the FRP plate subjected to a tensile load at one end. Any realistic local nonlinear bond-slip law can be used in the numerical analysis proposed in the present study. However, only a Popovics{\textquoteright} type expression is employed in the numerical process due to its use in different studies found in the literature. Effective bond length (Leff) is discussed and an expression depending on the Popovics{\textquoteright} constant (nP) is proposed to calculate it. Assuming a fracture in pure Mode II, the debonding process is analyzed in detail and distributions of bond stresses and strains in the FRP plate along the interface are presented. The load-displacement behaviour is also presented and the influence of the local bond-slip law on the debonding process is discussed.",

keywords = "Debonding, Numerical analysis, Concrete, Laminates, Interface, Laminates, Debonding, Interface, Numerical analysis, Concrete",

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T1 - Nonlinear numerical analysis of the debonding failure process of FRP-to-concrete interfaces

AU - Biscaia, Hugo

AU - Chastre, Carlos

AU - Silva, Manuel Américo Gonçalves da

N1 - Sem PDF conforme Despacho.

PY - 2013/7

Y1 - 2013/7

N2 - The paper analyses numerical solutions for the process leading to debonding failure of fiber reinforced polymers (FRP)-to-concrete interfaces in shear tests with the FRP plate subjected to a tensile load at one end. Any realistic local nonlinear bond-slip law can be used in the numerical analysis proposed in the present study. However, only a Popovics’ type expression is employed in the numerical process due to its use in different studies found in the literature. Effective bond length (Leff) is discussed and an expression depending on the Popovics’ constant (nP) is proposed to calculate it. Assuming a fracture in pure Mode II, the debonding process is analyzed in detail and distributions of bond stresses and strains in the FRP plate along the interface are presented. The load-displacement behaviour is also presented and the influence of the local bond-slip law on the debonding process is discussed.

AB - The paper analyses numerical solutions for the process leading to debonding failure of fiber reinforced polymers (FRP)-to-concrete interfaces in shear tests with the FRP plate subjected to a tensile load at one end. Any realistic local nonlinear bond-slip law can be used in the numerical analysis proposed in the present study. However, only a Popovics’ type expression is employed in the numerical process due to its use in different studies found in the literature. Effective bond length (Leff) is discussed and an expression depending on the Popovics’ constant (nP) is proposed to calculate it. Assuming a fracture in pure Mode II, the debonding process is analyzed in detail and distributions of bond stresses and strains in the FRP plate along the interface are presented. The load-displacement behaviour is also presented and the influence of the local bond-slip law on the debonding process is discussed.

KW - Debonding

KW - Numerical analysis

KW - Concrete

KW - Laminates

KW - Interface

KW - Laminates

KW - Debonding

KW - Interface

KW - Numerical analysis

KW - Concrete

U2 - 10.1016/j.compositesb.2013.02.013

DO - 10.1016/j.compositesb.2013.02.013

M3 - Article

SN - 1359-8368

VL - 50

SP - 210

EP - 223

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

ER -

Nonlinear numerical analysis of the debonding failure process of FRP-to-concrete interfaces

Abstract

Keywords

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