Adaptive coupling between damage mechanics and peridynamics: a route for objective simulation of material degradation up to complete failure

Handle URI:
http://hdl.handle.net/10754/609622
Title:
Adaptive coupling between damage mechanics and peridynamics: a route for objective simulation of material degradation up to complete failure
Authors:
Han, Fei ( 0000-0002-8050-3657 ) ; Lubineau, Gilles ( 0000-0002-7370-6093 ) ; Azdoud, Yan
Abstract:
The 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.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; COHMAS Laboratory
Citation:
Adaptive 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
Publisher:
Elsevier BV
Journal:
Journal of the Mechanics and Physics of Solids
Issue Date:
17-May-2016
DOI:
10.1016/j.jmps.2016.05.017
Type:
Article
ISSN:
00225096
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0022509616300175
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorHan, Feien
dc.contributor.authorLubineau, Gillesen
dc.contributor.authorAzdoud, Yanen
dc.date.accessioned2016-05-18T13:21:05Z-
dc.date.available2016-05-18T13:21:05Z-
dc.date.issued2016-05-17en
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 Solidsen
dc.identifier.issn00225096en
dc.identifier.doi10.1016/j.jmps.2016.05.017en
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.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0022509616300175en
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.2016.05.017en
dc.subjectDamageen
dc.subjectPeridynamicsen
dc.subjectFractureen
dc.subjectCouplingen
dc.subjectLocalizationen
dc.titleAdaptive coupling between damage mechanics and peridynamics: a route for objective simulation of material degradation up to complete failureen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentCOHMAS Laboratoryen
dc.identifier.journalJournal of the Mechanics and Physics of Solidsen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorHan, Feien
kaust.authorLubineau, Gillesen
kaust.authorAzdoud, Yanen
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