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dc.contributor.authorCervera Ruiz, Miguel
dc.contributor.authorBarbat Vlad, Gabriel
dc.contributor.authorChiumenti, Michèle
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2017-11-14T16:30:36Z
dc.date.available2019-01-01T01:30:50Z
dc.date.issued2017-11
dc.identifier.citationCervera, M., Barbat, G., Chiumenti, M. Finite element modeling of quasi-brittle cracks in 2D and 3D with enhanced strain accuracy. "Computational mechanics", Novembre 2017, vol. 60, núm. 5, p. 767-796.
dc.identifier.issn0178-7675
dc.identifier.urihttp://hdl.handle.net/2117/110585
dc.descriptionThe final publication is available at Springer via http://dx.doi.org/10.1007/s00466-017-1438-8
dc.description.abstractThis paper discusses the finite element modeling of cracking in quasi-brittle materials. The problem is addressed via a mixed strain/displacement finite element formulation and an isotropic damage constitutive model. The proposed mixed formulation is fully general and is applied in 2D and 3D. Also, it is independent of the specific finite element discretization considered; it can be equally used with triangles/tetrahedra, quadrilaterals/hexahedra and prisms. The feasibility and accuracy of the method is assessed through extensive comparison with experimental evidence. The correlation with the experimental tests shows the capacity of the mixed formulation to reproduce the experimental crack path and the force–displacement curves with remarkable accuracy. Both 2D and 3D examples produce results consistent with the documented data. Aspects related to the discrete solution, such as convergence regarding mesh resolution and mesh bias, as well as other related to the physical model, like structural size effect and the influence of Poisson’s ratio, are also investigated. The enhanced accuracy of the computed strain field leads to accurate results in terms of crack paths, failure mechanisms and force displacement curves. Spurious mesh dependency suffered by both continuous and discontinuous irreducible formulations is avoided by the mixed FE, without the need of auxiliary tracking techniques or other computational schemes that alter the continuum mechanical problem.
dc.format.extent30 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures
dc.subject.lcshBrittleness--Mathematical models
dc.subject.otherDamage
dc.subject.otherCracking
dc.subject.otherMixed finite elements
dc.subject.otherStrain localization
dc.subject.otherStructural failure
dc.titleFinite element modeling of quasi-brittle cracks in 2D and 3D with enhanced strain accuracy
dc.typeArticle
dc.subject.lemacFragilitat -- Models matemàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria
dc.identifier.doi10.1007/s00466-017-1438-8
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://link.springer.com/article/10.1007%2Fs00466-017-1438-8
dc.rights.accessOpen Access
drac.iddocument21207659
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorCervera, M., Barbat, G., Chiumenti, M.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameComputational mechanics
upcommons.citation.volume60
upcommons.citation.number5
upcommons.citation.startingPage767
upcommons.citation.endingPage796


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