Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/9417
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dc.contributor.authorYalçınkaya, Tuncaytr
dc.contributor.authorÖzdemir, İzzettr
dc.contributor.authorFırat, Ali Osmantr
dc.contributor.authorTandoğan, İzzet Tarıktr
dc.date.accessioned2020-07-25T22:10:46Z-
dc.date.available2020-07-25T22:10:46Z-
dc.date.issued2018-
dc.identifier.issn2452-3216-
dc.identifier.urihttps://doi.org/10.1016/j.prostr.2018.12.064-
dc.identifier.urihttps://hdl.handle.net/11147/9417-
dc.description22nd European Conference on Fracture (ECF) - Loading and Environmental Effects on Structural Integrity -- AUG 26-31, 2018 -- Belgrade, SERBIAen_US
dc.description.abstractThe recent developments in the production of miniaturized devices increases the demand on micro-components where the thickness ranges from tens to hundreds of microns. Various challenges, such as size effect and stress concentrations at the grain boundaries, arise due to the deformation heterogeneity observed at grain scale. Various metallic alloys, e.g. aluminum, exhibit substantial localization and stress concentration at the grain boundaries. In this regard, inter-granular damage evolution, crack initiation and propagation becomes an important failure mechanism at this length scale. Crystal plasticity approach captures intrinsically the heterogeneity developing due to grain orientation mismatch. However, the commonly used local versions do not possess a specific GB model and leads to jumps at the boundaries. Therefore, a more physical treatment of grain boundaries is needed. For this purpose, in this work, the Gurtin GB model (Gurtin (2008)) is incorporated into a strain gradient crystal plasticity framework (Yalcinkaya et al. (2011), Yalcinkaya et al. (2012), Yalcinkaya (2017)), where the intensity of the localization and stress concentration could be modelled considering the effect of grain boundary orientation, the mismatch and the strength of the GB. A zero thickness 12-node interface element for the integration of the grain boundary contribution and a 10-node coupled finite element for the bulk response are developed and implemented in Abaqus software as user element subroutines. 3D grain microstructure is created through Voronoi tessellation and the interface elements are automatically inserted between grains. After obtaining the localization, the mechanical behavior of the GB is modelled through incorporation of a potential based cohesive zone model (see Park et al. (2009), Cerrone et al. (2014)). The numerical examples present the performance of the developed tool for the intrinsic localization, crack initiation and propagation in micron-sized specimens. (C) 2018 The Authors. Published by Elsevier B.V.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofECF 22 - Loading and Environmental Effects on Structural Integrityen_US
dc.relation.ispartofseriesProcedia Structural Integrity-
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectStrain gradient crystal plasticityen_US
dc.subjectCohesive zone modelingen_US
dc.subjectGrain boundary modelingen_US
dc.subjectInter granular fractureen_US
dc.titleMicromechanical modeling of inter-granular localization, damage and fractureen_US
dc.typeConference Objecten_US
dc.institutionauthorÖzdemir, İzzettr
dc.departmentİzmir Institute of Technology. Civil Engineeringen_US
dc.identifier.volume13en_US
dc.identifier.startpage385en_US
dc.identifier.endpage390en_US
dc.identifier.wosWOS:000459860900063en_US
dc.identifier.scopus2-s2.0-85064597561en_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıtr
dc.identifier.doi10.1016/j.prostr.2018.12.064-
dc.relation.doi10.1016/j.prostr.2018.12.064en_US
dc.coverage.doi10.1016/j.prostr.2018.12.064en_US
dc.identifier.wosqualityN/A-
dc.identifier.scopusqualityQ3-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.openairetypeConference Object-
item.fulltextWith Fulltext-
crisitem.author.dept03.03. Department of Civil Engineering-
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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