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dc.contributor.authorCrusat Codina, Laura
dc.contributor.authorCarol, Ignacio
dc.contributor.authorGarolera Vinent, Daniel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.identifier.citationCrusat, L.; Carol, I.; Garolera, D. Application of configurational mechanics to crack propagation in quasi-brittle materials. "Engineering fracture mechanics", 2021, vol. 241, p. 107349:1-107349:26.
dc.description.abstractThe paper describes a numerical approach to represent cracking along non-pre-established directions, in 2-D structures or domains of quasi-brittle materials such as concrete or rock. The approach is developed on the basis of the FEM with zero-thickness interface elements, combined with the principles of Configurational Mechanics. Interface elements are pre-inserted along all potential crack lines in the mesh, and are equipped with a plasticity-type fracture mechanics-based constitutive model that incorporates fracture energies in mode I and IIa as constitutive parameters. Once an interface element starts cracking, an iterative re-orientation process is triggered according to the direction of configurational forces. After that process has converged, the interface orientation becomes fixed and the surrounding nodes are relocated to preserve mesh quality. The overall procedure developed has the main advantages of a fixed mesh topology (constant number of nodes) and a crack re-orientation criterion based on the minimization of the overall structural energy, as implied by the definition of configurational forces. Various examples of application are presented in which cracks get re-oriented during calculations. The results show good agreement with the crack paths known by symmetry considerations or experimental results, thus illustrating the good performance of the approach proposed.
dc.description.sponsorshipThe work has been partially supported by research grants BIA2016-76543-R from MEC (Madrid), which includes FEDER funds from the European Union, and 2017SGR-1153 from Generalitat de Catalunya (Barcelona). The first author would also like to thank MICINN (Madrid) for the FPI doctoral fellowship received.
dc.rights© 2019. Elsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subject.lcshBrittleness--Mathematical models
dc.subject.otherConfigurational mechanics
dc.subject.otherCrack propagation
dc.subject.otherNon-pre-established crack paths
dc.subject.otherNodes relocation
dc.subject.otherFinite Element Method
dc.titleApplication of configurational mechanics to crack propagation in quasi-brittle materials
dc.subject.lemacFragilitat -- Models matemàtics
dc.contributor.groupUniversitat Politècnica de Catalunya. MECMAT - Mecànica de Materials
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorCrusat, L.; Carol, Ignacio; Garolera, D.
local.citation.publicationNameEngineering fracture mechanics

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