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dc.contributor.authorHan, Fei
dc.contributor.authorLubineau, Gilles
dc.contributor.authorAzdoud, Yan
dc.date.accessioned2016-05-18T13:21:05Z
dc.date.available2016-05-18T13:21:05Z
dc.date.issued2016-05-17
dc.identifier.citationAdaptive coupling between damage mechanics and peridynamics: a route for objective simulation of material degradation up to complete failure 2016 Journal of the Mechanics and Physics of Solids
dc.identifier.issn00225096
dc.identifier.doi10.1016/j.jmps.2016.05.017
dc.identifier.urihttp://hdl.handle.net/10754/609622
dc.description.abstractThe objective (mesh-independent) simulation of evolving discontinuities, such as cracks, remains a challenge. Current techniques are highly complex or involve intractable computational costs, making simulations up to complete failure difficult. We propose a framework as a new route toward solving this problem that adaptively couples local-continuum damage mechanics with peridynamics to objectively simulate all the steps that lead to material failure: damage nucleation, crack formation and propagation. Local-continuum damage mechanics successfully describes the degradation related to dispersed microdefects before the formation of a macrocrack. However, when damage localizes, it suffers spurious mesh dependency, making the simulation of macrocracks challenging. On the other hand, the peridynamic theory is promising for the simulation of fractures, as it naturally allows discontinuities in the displacement field. Here, we present a hybrid local-continuum damage/peridynamic model. Local-continuum damage mechanics is used to describe “volume” damage before localization. Once localization is detected at a point, the remaining part of the energy is dissipated through an adaptive peridynamic model capable of the transition to a “surface” degradation, typically a crack. We believe that this framework, which actually mimics the real physical process of crack formation, is the first bridge between continuum damage theories and peridynamics. Two-dimensional numerical examples are used to illustrate that an objective simulation of material failure can be achieved by this method.
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0022509616300175
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of the Mechanics and Physics of Solids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of the Mechanics and Physics of Solids, 17 May 2016. DOI: 10.1016/j.jmps.2016.05.017
dc.subjectDamage
dc.subjectPeridynamics
dc.subjectFracture
dc.subjectCoupling
dc.subjectLocalization
dc.titleAdaptive coupling between damage mechanics and peridynamics: a route for objective simulation of material degradation up to complete failure
dc.typeArticle
dc.contributor.departmentComposite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of the Mechanics and Physics of Solids
dc.eprint.versionPost-print
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personHan, Fei
kaust.personLubineau, Gilles
kaust.personAzdoud, Yan
refterms.dateFOA2018-05-17T00:00:00Z
dc.date.published-online2016-05-17
dc.date.published-print2016-09


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