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Development of an interface numerical model for C-FRPs applied on flat and curved masonry pillars.

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Title: Development of an interface numerical model for C-FRPs applied on flat and curved masonry pillars.
Authors: Milani, Gabriele1 (AUTHOR) gabriele.milani@polimi.it, Fagone, Mario2 (AUTHOR), Rotunno, Tommaso3 (AUTHOR), Grande, Ernesto4 (AUTHOR), Bertolesi, Elisa5 (AUTHOR)
Source: Composite Structures. Jun2020, Vol. 241, pN.PAG-N.PAG. 1p.
Subjects: Masonry, Boundary value problems, Finite differences, Interfacial stresses
Abstract: A novel interface numerical model for the incremental analysis of the debonding phenomenon of Carbon Fiber Reinforced Polymer (C-FRP) reinforcements externally applied on flat and curved masonry pillars is presented. The interface tangential stress-slip behavior is suitably described by a C ∞ exponential function, that accounts for the ductility and residual strength variation due to the presence of interfacial normal stresses, according to a frictional-cohesive relationship. Such dependence is particularly important when dealing with C-FRP reinforcements applied to masonry curved structures (i.e. arches and vaults). The smooth interface relationship here adopted allows to deal with a boundary value problem for a system of second order differential equations, representing a standard delamination problem, without singularities. Consequently, an easy and robust numerical solution algorithm based on a standard finite differences approach can be adopted. The model is validated against some experimental and numerical results obtained previously by the authors and concerning shear-lap bond tests of flat and curved masonry pillars reinforced by C-FRP sheets. The obtained results underline an excellent robustness and reliability of the experimental global and local behavior. [ABSTRACT FROM AUTHOR]
Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 142519788
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
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  Data: Development of an interface numerical model for C-FRPs applied on flat and curved masonry pillars.
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  Data: <searchLink fieldCode="AR" term="%22Milani%2C+Gabriele%22">Milani, Gabriele</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> gabriele.milani@polimi.it</i><br /><searchLink fieldCode="AR" term="%22Fagone%2C+Mario%22">Fagone, Mario</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rotunno%2C+Tommaso%22">Rotunno, Tommaso</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Grande%2C+Ernesto%22">Grande, Ernesto</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bertolesi%2C+Elisa%22">Bertolesi, Elisa</searchLink><relatesTo>5</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Composite+Structures%22">Composite Structures</searchLink>. Jun2020, Vol. 241, pN.PAG-N.PAG. 1p.
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  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Masonry%22">Masonry</searchLink><br /><searchLink fieldCode="DE" term="%22Boundary+value+problems%22">Boundary value problems</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+differences%22">Finite differences</searchLink><br /><searchLink fieldCode="DE" term="%22Interfacial+stresses%22">Interfacial stresses</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A novel interface numerical model for the incremental analysis of the debonding phenomenon of Carbon Fiber Reinforced Polymer (C-FRP) reinforcements externally applied on flat and curved masonry pillars is presented. The interface tangential stress-slip behavior is suitably described by a C ∞ exponential function, that accounts for the ductility and residual strength variation due to the presence of interfacial normal stresses, according to a frictional-cohesive relationship. Such dependence is particularly important when dealing with C-FRP reinforcements applied to masonry curved structures (i.e. arches and vaults). The smooth interface relationship here adopted allows to deal with a boundary value problem for a system of second order differential equations, representing a standard delamination problem, without singularities. Consequently, an easy and robust numerical solution algorithm based on a standard finite differences approach can be adopted. The model is validated against some experimental and numerical results obtained previously by the authors and concerning shear-lap bond tests of flat and curved masonry pillars reinforced by C-FRP sheets. The obtained results underline an excellent robustness and reliability of the experimental global and local behavior. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Composite Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.compstruct.2020.112074
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
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      – SubjectFull: Masonry
        Type: general
      – SubjectFull: Boundary value problems
        Type: general
      – SubjectFull: Finite differences
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      – SubjectFull: Interfacial stresses
        Type: general
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      – TitleFull: Development of an interface numerical model for C-FRPs applied on flat and curved masonry pillars.
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            NameFull: Fagone, Mario
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            NameFull: Rotunno, Tommaso
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            NameFull: Grande, Ernesto
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            NameFull: Bertolesi, Elisa
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            – D: 01
              M: 06
              Text: Jun2020
              Type: published
              Y: 2020
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              Value: 241
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