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dc.contributor.authorHolmen, Jens Kristian
dc.contributor.authorDæhli, Lars Edvard
dc.contributor.authorHopperstad, Odd Sture
dc.contributor.authorBørvik, Tore
dc.date.accessioned2017-10-16T13:32:09Z
dc.date.available2017-10-16T13:32:09Z
dc.date.created2016-08-20T15:05:17Z
dc.date.issued2016
dc.identifier.citationProcedia Structural Engineering. 2016, 2 2543-2549.nb_NO
dc.identifier.issn2452-3216
dc.identifier.urihttp://hdl.handle.net/11250/2460356
dc.description.abstractUnit-cell models were in this study utilized to numerically determine the failure locus of a cast and homogenized AA6060 aluminum alloy. Simulations were conducted for moderate and high stress triaxiality ratios, and for various Lode parameters between generalized tension and generalized compression. We estimated the orientation of the localization band that minimizes the failure strain in the unit-cell models for all the imposed stress states. The energy based Cockcroft-Latham (CL) failure criterion was calibrated based on the numerically determined failure locus and used in finite element simulations that we evaluated against experimental tests. Test-specimen geometries included smooth tension tests, notched tension tests and plane strain tension tests. These were designed to cover a wide range of stress states. The points of failure in the experimental tests were predicted with reasonable accuracy by the numerical simulations. We see that the method used for numerically determining the failure locus can be improved by refining the micromechanical simulations. Better agreement between the simulations and the experiments can also be obtained, for instance by employing a different macroscopic failure criterion than the CL criterion.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titlePrediction of ductile failure using a phenomenological model calibrated from micromechanical simulationsnb_NO
dc.typeJournal articlenb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber2543-2549nb_NO
dc.source.volume2nb_NO
dc.source.journalProcedia Structural Engineeringnb_NO
dc.identifier.doi10.1016/j.prostr.2016.06.318
dc.identifier.cristin1374258
dc.relation.projectNorges forskningsråd: 237885nb_NO
dc.description.localcode© 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/)nb_NO
cristin.unitcode194,64,45,0
cristin.unitnameInstitutt for konstruksjonsteknikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.fulltextpostprint


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal