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1、ARTICLEINPRESSTribologyInternational40(2007)459–469www.elsevier.com/locate/tribointCalculationofStribeckcurvesfor(water)lubricatedjournalbearingsa,abAlexdeKraker,RonA.J.vanOstayen,DanielJ.RixenaLaboratoryofTribology,DepartmentofPrecisionandMicrosystemsEngine
2、ering,DelftUniversityofTechnology,Mekelweg2,2628CDDelft,TheNetherlandsbEngineeringDynamics,DepartmentofPrecisionandMicrosystemsEngineering,Facultyof3mE,DelftUniversityofTechnology,Mekelweg2,2628CDDelft,TheNetherlandsReceived10January2006;receivedinrevisedform
3、10April2006;accepted26April2006Availableonline14June2006AbstractThispaperdescribesamixedelastohydrodynamiclubrication(EHL)modelforfinitelengthelasticjournalbearings.Thefiniteelementmethodwasemployedtodiscretisethecoupledsystemof2D–3DReynolds-structureequationsa
4、ndtocomputeStribeckcurvesatconstantload.Asunderrelaxationstrategieshavebeenfoundtobeinsufficientforaniterativesolutionofthisproblem,artificialdynamicshavebeenaddedtothenumericalstructureequationsinordertosolveforstationarysolutionsofthefluid–structureproblem.Ani
5、dealplasticasperitycontactmodeltogetherwithaneffectivefilmthicknessformulationaccordingtoChengweiandLinqingwasemployedinordertocomputethecontactpressureinmixedlubrication.Themethodpresentedinthispaperisappliedtoatypicalwaterlubricatedjournalbearingproblem.Comp
6、utedStribeckcurvesarepresentedandthenumericalperformanceofthemethodisevaluated.r2006ElsevierLtd.Allrightsreserved.Keywords:Mixedlubrication;Soft-EHL;EHL;Journalbearing;Stribeckcurvecalculation;Fluid–structureinteraction1.Introductionmethod,theyremarkedthatitd
7、idnotconvergewhenthebearingdeformationwasofthesameorderofmagnitudeasManyelastohydrodynamic(EHL)journalbearingmod-thefilmheight.Evenwithvariousunderrelaxationelsandalgorithmssolvingthecoupledsystemofequationsstrategies,convergenceoftheirsolutionwasnotensured.ar
8、isingfromtheinteractionbetweenthelubricatingfluidPotentialasperitycontactathigh-eccentricityratiosisandthedeformationofthebearinghavebeenpublished[1–leftoutofconsiderationintheseearlypubli
