Influence of weld rigidity on the non-linear structural response of beams with a curved distortion

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorMancini, Federicaen_US
dc.contributor.authorRemes, Heikkien_US
dc.contributor.authorRomanoff, Janien_US
dc.contributor.authorGallo, Pasqualeen_US
dc.contributor.departmentDepartment of Mechanical Engineeringen
dc.contributor.groupauthorMarine Technologyen
dc.date.accessioned2021-09-15T06:39:43Z
dc.date.available2021-09-15T06:39:43Z
dc.date.issued2021-11-01en_US
dc.description.abstractThis study investigates an analytical beam model to improve the analyses of welded thin plates with welding-induced curved distortions. The model addresses the rigidity of a butt-welded joint and its effect on plate bending and structural stress by including a rotational spring at the welded end. The spring rotational stiffness, k(a), is replaced by the fixity factor, rho(a) . The validity of the model is based on the assumption of small displacement and moderate rotation of the mid-plane of the welded plate. Using the Finite Element Analysis of a two-dimensional model, a semi-analytical method for the fixity factor computation is developed. Compared with the numerical analysis, the beam model showed a maximum error of 3% in deflection and hot-spot structural stress. Results suggest that the fixity factor is mainly dependent on the width of the weld bead and the far-end constraint. The introduction of rho(a) can improve the analytical solution by 9% in the evaluation of the hot-spot structural stress. Neglecting the non-ideal joint rigidity may lead up to 54% underestimation in terms of fatigue life, when the S-N curve slope, m, equals 5. However, the relevance of rho(a) decreases for increasing geometric slenderness of the welded plates.en
dc.description.versionPeer revieweden
dc.format.extent13
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationMancini, F, Remes, H, Romanoff, J & Gallo, P 2021, ' Influence of weld rigidity on the non-linear structural response of beams with a curved distortion ', Engineering Structures, vol. 246, 113044 . https://doi.org/10.1016/j.engstruct.2021.113044en
dc.identifier.doi10.1016/j.engstruct.2021.113044en_US
dc.identifier.issn0141-0296
dc.identifier.otherPURE UUID: 46e944cc-501f-4ef6-807f-e5c767de329fen_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/46e944cc-501f-4ef6-807f-e5c767de329fen_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85113993695&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/67211115/ENG_Mancini_et_al_Influence_of_weld_rigidity_Engineering_Structures.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/109930
dc.identifier.urnURN:NBN:fi:aalto-202109159153
dc.language.isoenen
dc.publisherElsevier BV
dc.relation.ispartofseriesEngineering Structuresen
dc.relation.ispartofseriesVolume 246en
dc.rightsopenAccessen
dc.subject.keywordThin plateen_US
dc.subject.keywordangular misalignmenten_US
dc.subject.keywordWelded jointen_US
dc.subject.keywordFixityen_US
dc.subject.keywordstructural stressen_US
dc.subject.keywordHot-spoten_US
dc.subject.keywordStress magnification factoren_US
dc.titleInfluence of weld rigidity on the non-linear structural response of beams with a curved distortionen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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