电动汽车驱动电机轴承碰撞动力学建模及其油膜支承力分析

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中图分类号：TH133.3 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202508084

Abstract：Durigteoperationofelectricvehicles，extealexcitationinducescomplexvibratiosintedriemotorbeaingsTiscauses impactsbetwenthitealolingelementsandacewas，eadingtosuddenvaratiosinoilfiticknesandanicreaedrisofsaft currentdamage.Tesephenomenaacceleratefatigue wearandshortenbearingservicelife.Toadressthisissue，thispaperestablishesa dynamicmodelforanalyzingtheimpactbetweentheinerandouterringsofthebearingundernon-stationaryextealexcitation，which enablesefetivepredictionofitsvibrationcharacteristics.BasedonHertancontactthoyandaoninearspringmodel，amethodfor calculatingtheadialdynamicstfessoftebearingisproposedsimultaeouslyonsideringbothearanceandrolerpositionngle. Buildingpontisfoudatioeiprocsofotactipactseparatioisalydbapingdsplaceeteciatiotoeter ring.Adyamicmoelofteimpactprocessbetwntheradouteingsisostructdeveaingtevaratiopatesoftilfim supportingforceduringtheimpactevent.Simulationandexperimentalresultsdemonstratethattheproposedmodelalignswellwith experimentaldataisorkprovdeseliableteoreticalsupportforivestigatingtemehansmofsafturetdamageandpredictigte service lifeof bearings in electric vehicles.

Keywords：roller bearing;dynamic stiffness;dynamics modelling;external excitation;electric vehicle

轴承是电动汽车驱动电机的关键承载部件之一，其失效约占驱动电机总体故障的 32%[1] 。（剩余11635字）