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dc.contributor.authorGrytten, Frode
dc.contributor.authorSørensen, Bent Fruergaard
dc.contributor.authorGoutianos, Stergios
dc.contributor.authorJoki, Reidar Kvale
dc.contributor.authorJørgensen, Jens Kjær
dc.date.accessioned2020-12-30T11:37:18Z
dc.date.available2020-12-30T11:37:18Z
dc.date.created2020-12-20T19:29:54Z
dc.date.issued2021
dc.identifier.issn0263-8223
dc.identifier.urihttps://hdl.handle.net/11250/2721122
dc.description.abstractA micromechanical model of cross-over fiber bridging is developed for the prediction of macroscopic mixed-mode bridging laws (traction-separation laws). The model is based on non-linear beam theory and takes into account debonding between fiber and matrix as well as buckling of fibers in compression. Further, it is shown how failure of the bridging fibers can be taken into account through a Weibull distributed failure strain. Predictions made by the proposed model are compared with predictions made by detailed 3D finite element models, and a very good agreement was observed. It is shown that models based on linear beam theory are only valid for small transverse deflections of the bridging ligament and greatly underestimate the force transferred by ligaments subjected to moderately large deflections. The novel model, on the other hand, is applicable in the entire range where the bridging problem transitions from a beam bending problem to a bar-like problem. Finally, an example of how the proposed model can be used for parameter/sensitivity studies is given. A conclusion from this study is that reducing the fracture toughness, G_c , of the interface between fibers and matrix may lead to increased energy dissipation through cross-over fiber bridging as more fibres remain intact longer.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectBridging lawen_US
dc.subjectCross-over fiber bridgingen_US
dc.subjectFracture resistanceen_US
dc.titleA micromechanical model of fiber bridging including effects of large deflections of the bridging fibersen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2020 The Author(s). Published by Elsevier Ltd.This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).en_US
dc.source.pagenumber11en_US
dc.source.volume258en_US
dc.source.journalComposite structuresen_US
dc.identifier.doi10.1016/j.compstruct.2020.113405
dc.identifier.cristin1862068
dc.source.articlenumber113405en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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