Global buckling and post-buckling of web-core sandwich and stiffened panels: sensitivity to general corrosion

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Jelovica, Jasmin
dc.contributor.author Romanoff, Jani
dc.date.accessioned 2015-07-28T09:02:47Z
dc.date.available 2015-07-28T09:02:47Z
dc.date.issued 2014
dc.identifier.citation Jelovica, Jasmin & Romanoff, Jani. 2014. Global buckling and post-buckling of web-core sandwich and stiffened panels: sensitivity to general corrosion. Proceedings of the 7th International Conference on Thin-Walled Structures (ICTWS 2014). en
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/17288
dc.description.abstract Corrosion can lead to reduction of structural stiffness and strength. This paper investigates the influence of a reduction in the thickness of the plates as a result of general corrosion on sandwich panel buckling load and onset of plasticity. The results are compared to the stiffened panel of the same in-plane and bending stiffness. Current guidelines for corrosion protection threat these two structures equally. Load-shortening curves are obtained 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, modeled using shell and connector elements. The former is also used to identify the influence of corrosion on the stiffness coefficients and, consequently, the buckling load, also via analytical equation. The decrease of the buckling load is found higher in sandwich panel than in stiffened panel. The reduction is especially high in the case of the diffusion of moisture (water) into the core. The reason for the higher sensitivity of sandwich panel is a larger reduction of transverse shear stiffness opposite to the stiffener direction due to corrosion. en
dc.format.extent 1-11
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher ICTWS 2014 en
dc.relation.ispartof Proceedings of the 7th International Conference on Thin-Walled Structures (ICTWS 2014) en
dc.rights © ICTWS 2014 fi
dc.subject.other Civil engineering en
dc.subject.other Marine engineering en
dc.subject.other Mechanical engineering en
dc.subject.other Metallurgy en
dc.title Global buckling and post-buckling of web-core sandwich and stiffened panels: sensitivity to general corrosion en
dc.type C2 Toimitettu kirja, kokoomateos, konferenssijulkaisu tai lehden erikoisnumero fi
dc.description.version Peer reviewed en
dc.contributor.school Insinööritieteiden korkeakoulu fi
dc.contributor.school School of Engineering en
dc.contributor.department Sovelletun mekaniikan laitos fi
dc.contributor.department Department of Applied Mechanics en
dc.subject.keyword web-core en
dc.subject.keyword sandwich panel en
dc.subject.keyword buckling en
dc.subject.keyword post-buckling en
dc.subject.keyword corrosion en
dc.identifier.urn URN:NBN:fi:aalto-201507283916
dc.type.dcmitype text en
dc.contributor.lab Marine Technology en
dc.type.version Final published version en


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