ROMAC转子动力学模拟程序介绍PPT资料.pptx

ROMAC转子动力学模拟程序介绍PPT资料.pptx

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,IntroductiontoROMACRotordynamicModelingCodes,AmirYounan,ROMACSoftwareLabEngineer,Trane/IngersollRandVisitJuly142011Charlottesville,Virginia,OUTLINE,2,ROTORDYNAMICSYSTEMTYPESOFANALYSISNUMERICALMETHODSANALYSISCODES,ROTORDYNAMICSYSTEM,RotordynamicSystem,Built-onParts,Shaft/Rotor,SupportSystem,3,ROTORDYNAMICSYSTEM,RotordynamicSystem,Built-onParts,Shaft/Rotor,SupportSystem,SingleRotor,CoupledRotors,API684,Kramer,1993,4,ROTORDYNAMICSYSTEM,RotordynamicSystem,Built-onParts,Shaft/Rotor,SupportSystem,ConcentricRotors,Lalanne,2001,5,ROTORDYNAMICSYSTEM,RotordynamicSystem,Built-onParts,Shaft/Rotor,SupportSystem,Impeller,Fan,Gear,“Rotatewiththeshaft”,6,ROTORDYNAMICSYSTEM,RotordynamicSystem,Built-onParts,Shaft/Rotor,SupportSystem,Disk,Coupling,“Rotatewiththeshaft”,7,ROTORDYNAMICSYSTEM,RotordynamicSystem,Built-onParts,Shaft/Rotor,SupportSystems,“interactionbetweenamovingpartandastationarypart”,Bearings,RollingElement,8,JournalBearing,MagneticBearing,Built-onParts,Shaft/Rotor,SupportSystems,PhysicalSystem,FiniteElementModel,MathematicalModel,9,ROTORDYNAMICSYSTEMRotordynamicSystem,OUTLINE,10,ROTORDYNAMICSYSTEMANALYSISTYPEANALYSISNUMERICALMETHODSANALYSISCODES,TYPEOFANALYSIS,Resume,FREEVIBRATION,FORCEDVIBRATION,11,TYPEOFANALYSIS,FREEVIBRATION,12,FORCEDVIBRATION,Criticalspeedmap（Designtool）NaturalFrequenciesModeshapeofvibrationStabilityanalysis,State,Direction,TransientanalysisSteadystate,LateralvibrationTorsionalvibrationCoupledvibration,1CRITICALSPEEDMAP,BEARINGSTIFFNESS,DESIGNTOOL,NATURALFREQUENCIES,13,1CRITICALSPEEDMAP,NATURALFREQUENCIES,4thmode3rdmode2ndmode1stmode,BEARINGSTIFFNESS,14,1CRITICALSPEEDMAP,NATURALFREQUENCIES,4thmode,3rdmode2ndmode1stmode,Runningspeed,DesignedBRG,BEARINGSTIFFNESS,15,1CRITICALSPEEDMAP,NATURALFREQUENCIES,4thmode3rdmode2ndmode1stmode,Modeshapes,BEARINGSTIFFNESS,16,2STABILITYANALYSIS,NaturalfrequenciesandModeshapes,SystemModelBearingDesign,17,Naturalfrequencies,VibrationResponse,-n0,-n0,2STABILITYANALYSIS,18,3FORCEDRESPONCE,MostCommonForceinRotordynamicisUnbalance,Node142oz.inat0o,Node173oz.inat90o,Node222oz.inat135o,Node42ProbesXandY,Node312ProbesXandY,19,3FORCEDRESPONCE,RunningSpeed,VibrationAmplitude,Safe,1stCriticalspeed,2ndCriticalspeed,QualityFactor,20,OUTLINE,21,ROTORDYNAMICSYSTEMANALYSISTYPEANALYSISNUMERICALMETHODSANALYSISCODES,FINITEELEMENT,nodes,Element,Size:

@#@,Accuracy:

@#@,22,ROTORDYNAMICCODES,23,Legacy（older）CodesROTSTB（stability）/CRTSP2（criticalspeeds）FORSTAB（forcedresponse）COTRAN（nonlineartransient）TWIST2/TORTRAN3（torsional）MatlabRotor（new-lateral,torsional,axialDOFcombinedreplacesalllegacycodesexceptnonlineartransient）RotorGT（newgasturbineengineanalysis）RotorTran（newnonlineartransientcode）Rotor3D（new3Dfiniteelementrotorcode）,ROTSTB,24,OUPUTStabilityAnalysisdampedcriticalspeedsellipticalwhirlmodeshapesforsinglespoolrotors.BEARING:

@#@fixedgeometrybearingcoefficients,linearizedcompletetiltingpadbearingmodels,linearizedcollocated/non-collocatedmagneticbearingmodelsFlexiblesupportmodelswitheachbearingtypeareallowed.,Usestransfermatrixmethodinnon-dimensionalform.CAPABILITIES:

@#@includesgyroscopicrotaryinertiasheardeformationaerodynamiccrosscouplinghystereticdamping.Flexiblesupportmodels,25,ROTSTB,ROTSTB,26,CRTSP2,27,OUPUTundampedplanarcriticalspeedscriticalspeedmapFree-Freemodeofthesystem（usedbyFORSTAB）.UsestransfermatrixmethodCAPABILITIESdual-levelrotorsystemslinearizedcompletetiltingpadbearingmodels,CRTSP2,28,CRTSP2,29,CRTSP2,30,FORSTAB,31,OUPUTStabilityanalysisDampedmodeshapesForcedresponceUsesfiniteelementformulationwithbuiltinmodalreductiontoreducethenumberofequationsthatneedtobesolved.CAPABILITIESUnlimitednumberofrotorlevelsAerodynamiccross-couplingmodels,FORSTAB,32,CAPABILITIES（continue）Linearizedgyroscopiceffects.Multiplespeed/bearingcasesPolynomialtransferfunctionsthatdescribepedestaland/orcross-talkbetweenpedestalsBearingandsealmodelsFixedgeometryjournalbearingsTiltingpadjournalbearingsMagneticjournalbearings,FORSTAB,33,CAPABILITIES（continue）Unbalanceresponseplots,includingsemi-major,semi-minorandellipticalangle.MultipleunbalancesinasinglerotorUnlimitednumberofrunningspeedsandspeed/bearingcasesAbsoluteandrelativeunbalanceresponsesVariableprobeangle,FORSTAB,34,Modelyourrotor,FORSTAB,Importfree-freemodes,35,FORSTAB,Calculatedampedmodeshape,36,FORSTAB,Stabilityanalysis,37,FORSTAB,Forcedresponse,38,TWIST2,39,OUPUTundampedtorsionalnaturalfrequenciesTorsionalmodeshapes（Fortransientanalysis）TorsionalsteadystateresponseFiniteelementmethodisusedtoobtainthesetofequationsgoverningthemotionofthesystem.CAPABILITIESSingleshaftsorGearedshaftingwithbranchedsystems.Dampingcanbeincludedinforcedrespo