Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1012005
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dc.contributor.authorDias, I. M.pt_BR
dc.contributor.authorOliver, J.pt_BR
dc.contributor.authorLloberas-Valls, O.pt_BR
dc.date.accessioned2019-10-31T10:45:51Zpt_BR
dc.date.accessioned2019-12-05T10:23:26Z-
dc.date.available2019-10-31T10:45:51Zpt_BR
dc.date.available2019-12-05T10:23:26Z-
dc.date.issued2018-07pt_BR
dc.identifier.citationhttps://doi.org/10.1007/s10704-018-0293-8pt_BR
dc.identifier.urihttps://repositorio.lnec.pt/jspui/handle/123456789/1012005-
dc.description.abstractThis paper presents a finite element approach for modelling three-dimensional crack propagation in quasi-brittle materials, based on the strain injection and the crack-path field techniques. These numerical techniques were already tested and validated by static and dynamic simulations in 2D classical benchmarks and, also, for modelling tensile crack propagation in real concrete structures, like concrete gravity dams. The main advantages of the methodology are the low computational cost and the independence of the results on the size and orientation of the finite element mesh. These advantages were highlighted in previous works by the authors and motivate the present extension to 3D cases. The proposed methodology is implemented in the finite element framework using continuum constitutive models equipped with strain softening and consists, essentially, in injecting the elements candidate to capture the cracks with some goal oriented strain modes for improving the performance of the injected elements for simulating propagating displacement discontinuities. The goal-oriented strain modes are introduced by resorting to mixed formulations and to the Continuum Strong Discontinuity Approach (CSDA), while the crack position inside the finite elements is retrieved by resorting to the crack-path field technique. Representative numerical simulations in 3D benchmarks show that the advantages of the methodology already pointed out in 2D are kept in 3D scenarios.pt_BR
dc.language.isoengpt_BR
dc.publisherSpringerpt_BR
dc.rightsrestrictedAccesspt_BR
dc.subjectComputational material failurept_BR
dc.subjectStrong discontinuitiespt_BR
dc.subjectCrack-path fieldpt_BR
dc.subjectMixed formulationspt_BR
dc.subjectStrain injectionpt_BR
dc.subjectStrain localizationpt_BR
dc.subjectCrack propagationpt_BR
dc.titleStrain-injection and crack-path field techniques for 3D crack-propagation modelling in quasi-brittle materialspt_BR
dc.typeworkingPaperpt_BR
dc.description.pages67–87pppt_BR
dc.description.volumeVolume 212, Issue 1pt_BR
dc.description.sectorDBB/NMMRpt_BR
dc.description.magazineInternational Journal of Fracturept_BR
dc.contributor.peer-reviewedSIMpt_BR
dc.contributor.academicresearchersSIMpt_BR
dc.contributor.arquivoNAOpt_BR
Appears in Collections:DBB/NMMR - Comunicações a congressos e artigos de revista

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