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dc.contributor.authorKristoffersen, Martin
dc.contributor.authorLangseth, Magnus
dc.contributor.authorBørvik, Tore
dc.date.accessioned2018-08-27T13:53:33Z
dc.date.available2018-08-27T13:53:33Z
dc.date.created2018-07-24T15:25:13Z
dc.date.issued2018
dc.identifier.issn0951-8339
dc.identifier.urihttp://hdl.handle.net/11250/2559469
dc.description.abstractSubsea pipelines are occasionally struck and hooked by objects such as anchors or trawl gear. The initial denting, followed by potential hooking and displacement of the pipeline, give rise to a complex load and deformation history. Transverse displacements cause a simultaneous increase in tensile axial forces, further complicating the load sequence. This study examines the effect of applying one of three different axial loads (zero, constant, and linearly increasing) to a pipe while simultaneously deforming it transversely. The three tests were repeated with an internal pressure of 10 MPa (100 bar), and all tests were recreated numerically in finite element simulations using both iterative (implicit) and non-iterative (explicit) approaches. As expected, adding an axial load increased the pipe's resistance to bending in terms of force-displacement, and the same can be said of including internal pressure. However, a more localised dent was observed in the pressurised pipes, which in turn could affect the onset of failure. The experimental results were well captured by the finite element simulations.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.titleCombined three-point bending and axial tension of pressurised and unpressurised X65 offshore steel pipes – Experiments and simulationsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.journalMarine Structuresnb_NO
dc.identifier.doi10.1016/j.marstruc.2018.06.005
dc.identifier.cristin1598526
dc.relation.projectNorges forskningsråd: 237885nb_NO
dc.description.localcode© 2018. This is the authors’ accepted and refereed manuscript to the article. Locked until 23.8.2020 due to copyright restrictions. 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.ispublishedfalse
cristin.fulltextpostprint
cristin.qualitycode2


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
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