Title of article :
FrictionmodellingofpreloadedtubecontactdynamicsOriginalResearchArticle
Author/Authors :
M.A.Hassan، نويسنده , , R.J.Rogers، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Abstract :
Manylooselysupportedcomponentsaresubjectedtoflow-inducedvibrationleadingtolocalizedwear.Lifepredictiondependsonrobustandaccuratemodellingofthenonlineardynamicsasthecomponentsinteractwiththeirsupports.Theoutputofsuchanalysisisthecomponentdynamicresponseandimpactforces,includingfrictionforcesduringstick–slipmotions.Suchresultsareusedtodeterminethenormalworkrates,whichareutilizedtopredictfrettingweardamage.Accurateestimatesoftheseparametersareessential.Thispaperpresentssimulationsofalooselysupportedfuel-channeltubesubjecttoturbulenceexcitation.Theeffectsoftube/supportclearanceandpreloadareinvestigated.Severalfrictionmodels,includingvelocity-limited,spring-damperandforce-balanceareutilized.Acomparisonofthesemodelsiscarriedouttoinvestigatetheiraccuracy.Theresultsshowgoodagreementwithexperimentalworkrateswhenasimpleiterativeproceduretoupdatethefrictionforcesisused.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
