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dc.contributor.authorKristoffersen, Martin
dc.contributor.authorBørvik, Tore
dc.contributor.authorLangseth, Magnus
dc.contributor.authorHopperstad, Odd Sture
dc.date.accessioned2017-09-21T07:10:48Z
dc.date.available2017-09-21T07:10:48Z
dc.date.created2016-03-21T09:39:43Z
dc.date.issued2016
dc.identifier.citationThe European Physical Journal Special Topics. 2016, 225 (2), 325-334.nb_NO
dc.identifier.issn1951-6355
dc.identifier.urihttp://hdl.handle.net/11250/2455877
dc.description.abstractAnchors or trawl gear occasionally impact offshore pipelines, resulting in large local and global deformations. Impact velocities are typically less than 5 m/s, but local strain rates may be very high. In this study strain rate effects in an X65 offshore material was characterised by split Hopkinson bar tests, while the cross-section homogeneity and possible anisotropic behaviour were determined by quasi-static material tests. Further, dynamic impact tests at prescribed velocities were carried out on simply supported full scale X65 steel pipes. Next, deformation-controlled quasi-static tests with the same boundary conditions were conducted. The level of deformation in the quasi-static tests was set to be equal to that attained in the dynamic tests. Finally, an assessment of the differences between the dynamically and quasi-statically loaded pipes was made in terms of force-displacement response, energy absorbed, and fracture. An optical light microscope and a scanning electron microscope were used to investigate fracture surfaces arising from the various tests.nb_NO
dc.language.isoengnb_NO
dc.publisherSpringer Verlag / EDP Sciencesnb_NO
dc.titleDynamic versus quasi-static loading of X65 offshore steel pipesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber325-334nb_NO
dc.source.volume225nb_NO
dc.source.journalThe European Physical Journal Special Topicsnb_NO
dc.source.issue2nb_NO
dc.identifier.doi10.1140/epjst/e2016-02629-4
dc.identifier.cristin1346238
dc.relation.projectNorges forskningsråd: 237885nb_NO
dc.description.localcodeThis is the authors' accepted and refereed manuscript to the article.nb_NO
cristin.unitcode194,64,45,0
cristin.unitnameInstitutt for konstruksjonsteknikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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