Finite Element Stress Analysis of the Main Bearing Wall

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1、ABAQUS软件2003年度用户论文集FiniteElementStressAnalysisoftheMainBearingWallYueGuipingFAWTechnicalCenterBasicResearchDept.No.35ChuangyeStreet,Changchun130011Email:ikang_qy@faw.com.cnAbstract:Thetaskwastocheckifthemainbearingwallcouldsufferallimposedloadsthatarecausedbytheen

2、ginespecifications.Afiringpressureof16.0MPaandacontinuousoverspeedof2730rpmwereassumedforthemainbearingwallanalysisoftheengine.TheFE-analysiswascarriedoutusingthecomputerprogramABAQUS,Themodelconsistsofthebulkhead,thebearingshells;themainbearingcap,theorientationp

3、insandthemainbearingbolts.Submodelisused,becauseitisnecessarytoobtainanaccurate,detailedsolutionattheendwormofthemainbearingwallthatlocalregionhasnegligibleeffectontheoverallsolution.1.FEModel1.1.StructureTheFE-modelisbaseduponthe3DPro/ECADdata,FE-preprocessingwas

4、carriedoutusingcomputerprogramHYPERMESH.FE-analysisandpost-processingwasusingsoftwareABAQUS.AllthecomponentsareshowninFig.1.Thesub-modelisshowninFig.2.1.2.BoundaryandloadingconditionsThemaximuminterferenceofthebearingshellamountsto0.159mm.themaximumboltload157KNwa

5、sappliedatthesectionsurfaceinitsoutwardsnormaldirections,Gaspeakfiringpressureis16MPa.Twoloadcases:1.Assembly2.Assembly+Gas(16MPa)1.3.MaterialDataMaterialpropertiesarelistedinTable3.Table3:MaterialpropertiesYoung’sPoisson’sPartMaterialmod(N/mm2)ratioMainbearingcap

6、GGG40/GGv401450000.27BuckheadGG251100000.26BearingshellsSteel2100000.3BoltsSteel2100000.3orientationpinsSteel2100000.32.ResultsoftheMainbearingwallStrengthAnalysis2.1.StressesFactors-1-ABAQUS软件2003年度用户论文集StressesareshowedonFig.3-9.2.2.MinimumContactPressure(Bearin

7、gshellandMbw)Fig.10showsthecontactPressurebetweenbearingshellandmbw.TheimposedloadsareAssemblyload+gasloadcase.2.3.ContactPressureintheSplitLinebetweenBulkheadandBearingCapFig.11showsthecontactPressureinthesplitlinebetweenbulkheadandbearingcap.Theimposedloadsarepr

8、e-boltloads,assemblyloads,andAssemblyload+gasloadcase3.Conclusions*thebulkheadandthemainbearingcapcansustainamaximumfiringpressureof160barandamaximumbol