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1、SimulationMethodsforNVH-DevelopmentofaDoubleClutchTransmissionGearboxSIMPACKUserMeeting2014AlexanderNeubauerMercedes-BenzCarsDevelopmentDaimlerAG,StuttgartContentofpresentation1.GearboxSimulationinDrivelineDevelopement2.OverviewTestrigmodelsforNVH-SimulationandMethodology3.SimulationofGearwhining
2、intheDCTGearbox4.EvaluationofRattlingSensitivityofDCTGearbox5.ConclusionandFutureWorkAlexanderNeubauer
3、DaimlerAG
4、09October201421.1DrivelineDevelopment-NVHSimulationDesignIntegrationDesignMatching3Simulationmodels-DesignandDevelopementDrivelineBigmodels,Compactmodels,LowDiscretisationHighDiscretis
5、ationLowfrequencyrangeHighfrequencyrangeVortragAlexanderNeubauer
6、DAIMLERAG,RD/FNP
7、01.10.201431.2OverviewofNoisesinAutomotiveGearboxesGearboxNoisesLoadedgearsUnloadedgearsIdlespeedCoast/FullloadGearwhiningRattlingsource/reason:source/reason:?Fluctuationinstiffness(transmissionerror)?Impulsivehitsa
8、tthegearbacklashlimits?Macrogeometryofgear(Spurbevel-and?LoosegearoscillationofunloadedgearwheelsHelixGearwheel)(alsosynchrobodies)becauseofgearbacklash?Microgeometry(Gearteethflankcorrection)?Torsionalvibrationexcitationofthedrivengear?Highloadtorque(Pretension)?Angularaccelerationamplitudeisres
9、ponsible?Bendingstiffnessoftheshaftsfortakingoffloosegearfromthedrivenflank?Structuralbehaviorofhousingofthefixgear?Oilviscosityandtemperature?OilviscosityandtemperatureAlexanderNeubauer
10、DaimlerAG
11、09October201442.1MethodologyforNVH-SimulationofDCTGearboxSIMPACK-PreSIMPACK-Post?flexiblegearboxhous
12、ing?transmissionerror?modalmaterialdamping?eigenfrequencyanalysis?externalnodesforevaluationof?DetailledanalysisofmechanismstructurebornesoundBeschleunigung[dB/(m/s2)]?rigidbodyelementsfor30?correlationwithend-of-lineKS2Xgearshaftmounting20testrigmeasurements10?Evaluationofaccelerationson?flexibl
13、egearshafts0definedhousinglocations?switchablegears-10?detailedanalysisofgearorders?bearingswith6DOF-20570Hz940Hz1600min-12700min-1-30?syncrobodiesasdummybodies1500200025003000Drehzahl[1/min]?rigidgearwheelswithdetaile
