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Numerical Investigation of the Size Effects on the Creep Damage Coupling

hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorSALIBA, Jacqueline
IDREF: 17096647X
hal.structure.identifierInstitut de Recherche en Génie Civil et Mécanique [GeM]
dc.contributor.authorGRONDIN, Frédéric
hal.structure.identifierInstitut de Recherche en Génie Civil et Mécanique [GeM]
dc.contributor.authorLOUKILI, Ahmed
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorMOREL, Stephane
IDREF: 188269258
dc.date.accessioned2021-05-14T09:50:40Z
dc.date.available2021-05-14T09:50:40Z
dc.date.issued2014
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77307
dc.description.abstractEnThe service-life of concrete structures depends on the delayed strains that appear due to creep phenomenon. Few are the studies that treated the effect of the dimensions of concrete specimens on the amplitude and the kinetics of creep and the results show many contradictions. Thus, to design reliable civil engineering structures, the knowledge of the behaviour of concrete under a sustained load including size effect is necessary and performing calculations are needed. In this paper, the physical mechanisms behind the size effect on creep rate are evaluated at the mesoscopic scale. The material volume is modeled, by a Digital Concrete model which takes into account the microstructure heterogeneities and the “real” aggregate size of concrete. Calculations are performed in 2D by considering a viscoelastic damage behaviour law for the matrix and an elastic behavior for aggregates. The numerical results show that size effect is well reproduced by the meso-scale approach. The stresses under a sustained load are induced by strain incompatibilities between the components at the mesoscale. Accordingly, the evolution of the microcracked zone with the size of the bending specimens can be related to the creep rate.
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enmesoscopic
dc.subject.enmodelling
dc.subject.endamage
dc.subject.enCreep
dc.subject.ensize effect
dc.title.enNumerical Investigation of the Size Effects on the Creep Damage Coupling
dc.typeArticle de revue
dc.identifier.doi10.1016/j.mspro.2014.06.169
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des matériaux [physics.class-ph]
bordeaux.journalProcedia Materials Science (Elsevier)
bordeaux.page1038-1043
bordeaux.volume3
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.issue2
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-01007127
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01007127v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Procedia%20Materials%20Science%20(Elsevier)&rft.date=2014&rft.volume=3&rft.issue=2&rft.spage=1038-1043&rft.epage=1038-1043&rft.au=SALIBA,%20Jacqueline&GRONDIN,%20Fr%C3%A9d%C3%A9ric&LOUKILI,%20Ahmed&MOREL,%20Stephane&rft.genre=article


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