Title of article
Probabilisticpredictionoffretting-weardamageofnuclearfuelrodsOriginalResearchArticle
Author/Authors
PabloR.Rubiolo، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
13
From page
1628
To page
1640
Abstract
Thedevelopmentofaprobabilisticmethodtopredictthefretting-wearperformanceoffuelrodsispresented.Inthisapproach,thedynamicresponseofthenuclearfuelrodanditssupportsiscalculatedbyanon-linearvibrationmodel(calledVITRANforVIbrationTRansientAnalysis—Nonlinear).Thismodelpredictsthemotionofafuelrodexposedtoaturbulentflowandtakesintoaccountthepresenceoftherod-to-gridgapsintheassemblygrids.Numericalvaluesforthegridworkandwearratesarecalculatedfromthepredictedforcesduringtherodimpactsagainstthesupports.Duetothelargevariabilityofthefuelassemblyparametersaffectingthefretting-wearperformance,aMonteCarlomethodwaschosentoperformthetransientsimulations.Asaresult,averagevalues,standarddeviationsandotherstatisticalparametersoftheprobabilitydensityfunctionsofthewearratesandthewearscarspopulationcanbeestimated.AdescriptionofVITRANandanexampleofapplicationofthefretting-wearmethodologytoevaluatetheperformanceofafueldesignarepresented.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2006
Journal title
Nuclear Engineering and Design Eslah
Record number
941283
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