Influence of general corrosion on buckling strength of laser-welded web-core sandwich plates

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorJelovica, Jasmin
dc.contributor.authorRomanoff, Jani
dc.contributor.authorRemes, Heikki
dc.contributor.departmentSovelletun mekaniikan laitosfi
dc.contributor.departmentDepartment of Applied Mechanicsen
dc.contributor.labMarine Technologyen
dc.contributor.schoolInsinööritieteiden korkeakoulufi
dc.contributor.schoolSchool of Engineeringen
dc.date.accessioned2016-11-08T10:01:21Z
dc.date.available2016-11-08T10:01:21Z
dc.date.issued2014
dc.description.abstractThe strength of a web-core steel sandwich plate is potentially reduced in a corrosive environment. This study is dedicated to the influence of a reduction in the thickness of the plates as a result of general corrosion on sandwich plate buckling strength and first-fibre failure. Two scenarios are investigated in which corrosion reduces the thickness of (a) the outer sides of the face plates and (b) all surfaces, including the core. The laser weld between the face sheets and the core is assumed to be intact. The assumptions are made on the basis of earlier experimental findings. Critical buckling and geometric non-linear analysis are carried out with the finite element method, with the kinematics being represented using two approaches: (1) equivalent single-layer with first-order shear deformation theory, and (2) a three-dimensional model of the actual geometry of the structure, modelled using shell and connector elements. The former is used to identify the effect of corrosion on the stiffness coefficients and, consequently, the buckling strength. The later is used for verification and for stress prediction during post-buckling. A rapid decrease in the buckling strength was found for corrosion affecting the outer sides of the sandwich plate. The decrease in the buckling strength doubled in the case of the diffusion of moisture (water) into the core. The shear-induced secondary bending of the faces was found to affect the first-fibre yield.en
dc.description.versionPeer revieweden
dc.format.extentp. 342-350
dc.format.mimetypeapplication/pdfen
dc.identifier.citationJelovica, Jasmin & Romanoff, Jani & Remes, Heikki. 2014. Influence of general corrosion on buckling strength of laser-welded web-core sandwich plates. Journal of Constructional Steel Research. Volume 101. p. 342-350. DOI: 10.1016/j.jcsr.2014.05.025.en
dc.identifier.doi10.1016/j.jcsr.2014.05.025
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/23395
dc.identifier.urnURN:NBN:fi:aalto-201507293932
dc.language.isoenen
dc.publisherElsevieren
dc.relation.ispartofseriesJournal of Constructional Steel Researchen
dc.relation.ispartofseriesVolume 101
dc.rights© 2014 Elsevier. This is the post print version of the following article: Jelovica, Jasmin & Romanoff, Jani & Remes, Heikki. 2014. Influence of general corrosion on buckling strength of laser-welded web-core sandwich plates. Journal of Constructional Steel Research. Volume 101. p. 342-350. DOI: 10.1016/j.jcsr.2014.05.025, which has been published in final form at http://www.sciencedirect.com/science/article/pii/S0143974X14001679.fi
dc.subject.keywordWeb-coreen
dc.subject.keywordsandwichen
dc.subject.keywordplateen
dc.subject.keywordbucklingen
dc.subject.keywordpost-bucklingen
dc.subject.keywordcorrosionen
dc.subject.keywordfirst fibre failureen
dc.subject.keywordlaser welden
dc.subject.otherCivil engineeringen
dc.subject.otherMarine engineeringen
dc.subject.otherMaterials scienceen
dc.subject.otherMechanical engineeringen
dc.subject.otherMetallurgyen
dc.titleInfluence of general corrosion on buckling strength of laser-welded web-core sandwich platesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionPost printen
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