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dc.contributor.author
Dias, I. F.
dc.contributor.author
Oliver, J.
dc.contributor.author
Huespe, Alfredo Edmundo
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dc.date.available
2020-07-23T16:12:38Z
dc.date.issued
2012
dc.identifier.citation
Dias, I. F.; Oliver, J.; Huespe, Alfredo Edmundo; Strain Injection Techniques in Numerical Modeling of Propagating Material Failure; Cimne; 1; 2012; 222
dc.identifier.isbn
978-84-940243-7-5
dc.identifier.uri
http://hdl.handle.net/11336/110076
dc.description.abstract
The methodology proposed in this research work explores the use of the straininjection concept in a combination of classical strain localization methods andembedded strong discontinuities, to remove the flaws (stress locking and meshbias dependence) of the former, and simultaneously abdicate of the global trackingalgorithms usually required by the later. The basic idea is to use, after thebifurcation instant, i.e. after the time that elements are amenable to develop discontinuities,a mixed continuous displacements - discontinuous constant strainscondensable finite element formulation (Q1/ e0 ) for quadrilaterals in 2D. Thisformulation provides improved behavior results, specially, in avoiding mesh biasdependence. In a first, very short, stage after the bifurcation the concept of strongdiscontinuity is then left aside, and the apparent displacement jump is capturedacross the finite element length (smeared) like in classical strain localization settings.Immediately after, in a second stage, the kinematics of those finite elementsthat have developed deep enough strain localization is enriched with the injectionof a weak/strong discontinuity mode that minimizes the stress locking defects.The necessary data to inject the discontinuity (the discontinuity direction and itsposition inside the finite element) is obtained by a post process of the strain-likeinternal variable field obtained in the first stage, this giving rise to a local (elementalbased) tracking algorithm (the crack propagation problem) that can belocally and straightforwardly implemented in a finite element code in a non invasivemanner. The obtained approach enjoys the benefits of embedded strong discontinuitymethods (stress locking free, mesh bias independence and low computationalcost), at a complexity similar to the classical, and simpler, though lessaccurate, strain localization methods. Moreover, the methodology is applicable toany constitutive model (damage, elasto-plasticity, etc.) without apparent limitations.Representative numerical simulations validate the proposed approach.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cimne
dc.rights
info:eu-repo/semantics/closedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Finite element method for failure analysis
dc.subject
computational material failure
dc.subject
damage and plasticity
dc.subject
enhanced strain methods
dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Strain Injection Techniques in Numerical Modeling of Propagating Material Failure
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/book
dc.type
info:ar-repo/semantics/libro
dc.date.updated
2020-06-16T13:38:59Z
dc.journal.volume
1
dc.journal.pagination
222
dc.journal.pais
España
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dc.journal.ciudad
Barcelona
dc.description.fil
Fil: Dias, I. F.. Universidad Politécnica de Catalunya; España
dc.description.fil
Fil: Oliver, J.. Universidad Politécnica de Catalunya; España
dc.description.fil
Fil: Huespe, Alfredo Edmundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://books.cimne.com/shop/strain-injection-techniques-in-numerical-modeling-of-propagating-material-failure/
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