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dc.contributor.authorOgnedal, Anne Serine
dc.contributor.authorClausen, Arild Holm
dc.contributor.authorDahlen, Anfrid
dc.contributor.authorHopperstad, Odd Sture
dc.date.accessioned2017-11-08T11:36:17Z
dc.date.available2017-11-08T11:36:17Z
dc.date.created2014-08-21T13:10:24Z
dc.date.issued2014
dc.identifier.citationMechanics of materials (Print). 2014, 72 94-108.nb_NO
dc.identifier.issn0167-6636
dc.identifier.urihttp://hdl.handle.net/11250/2464904
dc.description.abstractThis paper addresses the deformation of axisymmetric tensile bars, made of mineral-filled PVC and HDPE, with and without pre-machined notch. The purpose of the study is both to investigate the mechanical behavior under various stress triaxialities, induced by different notch radii, and the capabilities of a phenomenological constitutive model. The yield stress and the plastic dilation have been chosen as the key response parameters from the tests in order to evaluate the yield function and the flow potential of the constitutive model. It is found that the yield stress and the plastic dilation of the mineral-filled PVC are highly sensitive to hydrostatic pressure. The yield stress of the HDPE hardly changes, while the plastic dilation increases with increasing stress triaxiality. The experimentally observed plastic dilation of both materials is related to void growth. The constitutive model reproduces force–displacement relationships for both materials with reasonable accuracy. However, the numerical simulations underestimate the plastic dilation for high stress triaxialities.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.titleBehavior of PVC and HDPE under highly triaxial stress states: An experimental and numerical studynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber94-108nb_NO
dc.source.volume72nb_NO
dc.source.journalMechanics of materials (Print)nb_NO
dc.identifier.doi10.1016/j.mechmat.2014.02.002
dc.identifier.cristin1148379
dc.relation.projectNorges forskningsråd: 174834nb_NO
dc.description.localcode© 2014. This is the authors’ accepted and refereed manuscript to the article. This manuscript version is made available 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.fulltextpostprint
cristin.qualitycode1


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