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Article: Incremental displacement collocation method for the evaluation of tension softening curve of mortar

TitleIncremental displacement collocation method for the evaluation of tension softening curve of mortar
Authors
KeywordsCohesive Crack Model
Displacement Collocation
Electronic Speckle Pattern Interferometry
Finite Element Model
Local Response
Mortar
Tension Softening Curve
Issue Date2012
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engfracmech
Citation
Engineering Fracture Mechanics, 2012, v. 88, p. 49-62 How to Cite?
AbstractThe tension softening curve (TSC), showing the relationship between the cohesive tensile stress and crack opening displacement, is the constitutive law of the cohesive crack model. Due to the difficulties in measuring local deformations around the crack tip, the TSC is usually determined inversely from the global responses such as load-deflection curve or load-crack mouth opening displacement curve of pre-notched specimens. However, the use of global responses alone in the inverse analysis usually causes problems that may affect the reliability and accuracy of the TSC which is basically a local material property. To overcome these limitations, an incremental displacement collocation method (IDCM) that is able to evaluate the TSC in a step-by-step manner is proposed in this paper. Both global and local responses of a pre-notched mortar beam, which are measured using an electronic speckle pattern interferometry technique, are used in the displacement collocation process. Furthermore, the finite element model (FEM) is utilized to simulate the response of the beam. The TSCs evaluated in this study are verified through the comparisons of the global and local displacements as well as the fracture energy. A tri-linear curve was found to be the best approximation of the TSC of mortar. © 2012 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/150675
ISSN
2015 Impact Factor: 2.024
2015 SCImago Journal Rankings: 1.423
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSu, RKLen_US
dc.contributor.authorChen, HHNen_US
dc.contributor.authorKwan, AKHen_US
dc.date.accessioned2012-06-26T06:06:41Z-
dc.date.available2012-06-26T06:06:41Z-
dc.date.issued2012en_US
dc.identifier.citationEngineering Fracture Mechanics, 2012, v. 88, p. 49-62en_US
dc.identifier.issn0013-7944en_US
dc.identifier.urihttp://hdl.handle.net/10722/150675-
dc.description.abstractThe tension softening curve (TSC), showing the relationship between the cohesive tensile stress and crack opening displacement, is the constitutive law of the cohesive crack model. Due to the difficulties in measuring local deformations around the crack tip, the TSC is usually determined inversely from the global responses such as load-deflection curve or load-crack mouth opening displacement curve of pre-notched specimens. However, the use of global responses alone in the inverse analysis usually causes problems that may affect the reliability and accuracy of the TSC which is basically a local material property. To overcome these limitations, an incremental displacement collocation method (IDCM) that is able to evaluate the TSC in a step-by-step manner is proposed in this paper. Both global and local responses of a pre-notched mortar beam, which are measured using an electronic speckle pattern interferometry technique, are used in the displacement collocation process. Furthermore, the finite element model (FEM) is utilized to simulate the response of the beam. The TSCs evaluated in this study are verified through the comparisons of the global and local displacements as well as the fracture energy. A tri-linear curve was found to be the best approximation of the TSC of mortar. © 2012 Elsevier Ltd.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engfracmechen_US
dc.relation.ispartofEngineering Fracture Mechanicsen_US
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Engineering Fracture Mechanics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Engineering Fracture Mechanics, 2012, v. 88, p. 49-62. DOI: 10.1016/j.engfracmech.2012.04.005-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectCohesive Crack Modelen_US
dc.subjectDisplacement Collocationen_US
dc.subjectElectronic Speckle Pattern Interferometryen_US
dc.subjectFinite Element Modelen_US
dc.subjectLocal Responseen_US
dc.subjectMortaren_US
dc.subjectTension Softening Curveen_US
dc.titleIncremental displacement collocation method for the evaluation of tension softening curve of mortaren_US
dc.typeArticleen_US
dc.identifier.emailSu, RKL:klsu@hkucc.hku.hken_US
dc.identifier.authoritySu, RKL=rp00072en_US
dc.description.naturepostprinten_US
dc.identifier.doi10.1016/j.engfracmech.2012.04.005en_US
dc.identifier.scopuseid_2-s2.0-84861183172en_US
dc.identifier.hkuros199961-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84861183172&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume88en_US
dc.identifier.spage49en_US
dc.identifier.epage62en_US
dc.identifier.eissn1873-7315-
dc.identifier.isiWOS:000306534900005-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridSu, RKL=7102627096en_US
dc.identifier.scopusauthoridChen, HHN=41861129500en_US
dc.identifier.scopusauthoridKwan, AKH=54924582700en_US
dc.identifier.citeulike10588360-

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