Correction of local deformations in free vibration analysis of ship deck structures by equivalent single layer elements

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Laakso, Aleksi
dc.contributor.author Avi, Eero
dc.contributor.author Romanoff, Jani
dc.date.accessioned 2019-04-02T06:58:19Z
dc.date.available 2019-04-02T06:58:19Z
dc.date.issued 2019-01-02
dc.identifier.citation Laakso , A , Avi , E & Romanoff , J 2019 , ' Correction of local deformations in free vibration analysis of ship deck structures by equivalent single layer elements ' Ships and Offshore Structures . https://doi.org/10.1080/17445302.2018.1561173 en
dc.identifier.issn 1744-5302
dc.identifier.issn 1754-212X
dc.identifier.other PURE UUID: ed26b393-2e4b-4c9f-a725-881287d9c1c6
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/correction-of-local-deformations-in-free-vibration-analysis-of-ship-deck-structures-by-equivalent-single-layer-elements(ed26b393-2e4b-4c9f-a725-881287d9c1c6).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85059557408&partnerID=8YFLogxK
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/37402
dc.description.abstract Equivalent single layer (ESL) elements provide an easy and computationally effective way to model stiffened plates in finite element analysis of ship structures. Secondary stiffeners are incorporated into the plate or shell formulation. In the free vibration analysis, these elements ignore inertia induced local deformation of plating between the secondary stiffeners. Oscillating motion causes inertia induced body load that locally deforms the plate. This local deformation may have a significant effect on the global modal frequencies of a deck structure. This paper presents a method for correcting ESL modal frequencies by modifying generalised mass and stiffness of the modes. The modification is based on the kinetic and strain energies of the local deformations. Energy components are derived from local consideration of plate in cylindrical bending under enforced support vibration. The method is validated in a case study of ship deck structure against shell mesh results, and good agreement is found. en
dc.language.iso en en
dc.publisher Taylor and Francis Ltd.
dc.relation.ispartofseries Ships and Offshore Structures en
dc.rights embargoedAccess en
dc.subject.other Ocean Engineering en
dc.subject.other Mechanical Engineering en
dc.subject.other 214 Mechanical engineering en
dc.title Correction of local deformations in free vibration analysis of ship deck structures by equivalent single layer elements en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Helsinki School of Economics
dc.contributor.department Department of Mechanical Engineering
dc.subject.keyword deck
dc.subject.keyword equivalent element
dc.subject.keyword equivalent single layer
dc.subject.keyword finite element method
dc.subject.keyword Free vibration
dc.subject.keyword stiffened panel
dc.subject.keyword Ocean Engineering
dc.subject.keyword Mechanical Engineering
dc.subject.keyword 214 Mechanical engineering
dc.identifier.urn URN:NBN:fi:aalto-201904022533
dc.identifier.doi 10.1080/17445302.2018.1561173
dc.date.embargo info:eu-repo/date/embargoEnd/2020-01-03


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