Title of article
VibrationanalysisofadummyfuelrodcontinuouslysupportedbyspacergridsOriginalResearchArticle
Author/Authors
M.HChoi، نويسنده , , H.SKang، نويسنده , , Myung-Hyoon Kim، نويسنده , , K.NSong، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
12
From page
185
To page
196
Abstract
Thefuelrodsinthepressurizedwaterreactorarecontinuouslysupportedbyaspringsystemcalledaspacergrid(SG),whichisoneofthemainstructuralcomponentsforthefuelrodcluster(fuelassembly).Thefuelrodshaveavibrationbehaviorwithinthereactorduetocoolantflow.Sincethevibration,whichiscalledflow-inducedvibration,canwearawaythesurfaceofthefuelrod,itisimportanttounderstanditsvibrationcharacteristics.Inthispaper,amodaltestingandafiniteelement(FE)analysisusingABAQUSonadummyfuelrodcontinuouslysupportedbyOptimizedHType(OHT)andNewDoublet(ND)spacergridsareperformedtoobtainthevibrationcharacteristicssuchasnaturalfrequenciesandmodeshapesandtoverifytheFEmodelused.TheresultsfromthetestandtheFEanalysisarecomparedaccordingtomodalassurancecriteriavalues.ThenaturalfrequencydifferencesbetweenthetwomethodsaswellasthemodecomparisonresultsfortherodwiththeOHTSGarebetterthanthosewiththeNDSG.Thatis,inthecaseoftheNDgridmodelusingbeam-springelements,therewasalargediscrepancybetweenthetwomethods.Thus,wetriedtomodifytheFEmodelfortheNDSGconsideringthecontactphenomenabetweenthefuelrodandtheSG.Theresultsofthenewmodelshowedagoodagreementwiththeexperimentcomparedwiththoseofabeam-springmodel.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2004
Journal title
Nuclear Engineering and Design Eslah
Record number
894789
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