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基于四极子声源的轮胎管腔共振噪声研究.docx

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基于四极子声源的轮胎管腔共振噪声研究 Title:InvestigationonTireCavityResonanceNoiseBasedonQuadrupoleSoundSources Abstract: Tirecavityresonancenoiseisaprominentissueinvehicleacoustics,negativelyimpactingpassengercomfortandoverallvehiclenoiselevels.Thispaperaimstostudythecharacteristicsandmechanismsoftirecavityresonancenoise,particularlyfocusingontheroleofquadrupolesoundsources.Throughacomprehensiveanalysisandexperimentalstudy,thisresearchaimstoprovideinsightsintothemitigationandcontroloftirecavityresonancenoise. 1.Introduction: 1.1Background: Tirecavityresonancenoisereferstothenoisegeneratedduetotheresonantbehavioroftheair-filledcavitywithinthetire.Thisnoiseistypicallylow-frequencyandcanbetransferredintothevehiclecabinthroughthesuspensionsystem,affectingtheoverallnoiseandcomfortofthepassengers.Understandingthemechanismsbehindtirecavityresonancenoiseiscrucialfordevisingeffectivenoisecontrolstrategies. 1.2Objectives: Theobjectiveofthisresearchistoinvestigatethetirecavityresonancenoisephenomenonwithaspecificfocusonthecontributionofquadrupolesoundsources.Theresearchaimstoidentifythecharacteristicsofthenoise,understandthephysicalmechanismsresponsible,andexplorepotentialmitigationstrategies. 2.TireCavityResonanceNoiseMechanism: 2.1CavityResonanceModes: Tirecavityresonancenoiseoccurswhentheairvolumeenclosedwithinthetirecavityexcitesitsnaturalresonantmodes.Thenaturalfrequenciesofthecavityvarywithitsgeometryandmaterialproperties,leadingtospecificresonancemodesthatcangenerateexcessivenoise. 2.2QuadrupoleSoundSources: Quadrupolesoundsourcesareanimportantcontributortotirecavityresonancenoise.Thesesourcesarecausedbytheinteractionbetweenthevibratingtiresandtheenclosedairvolume,resultinginsignificantnoiseradiation.Understandingthecharacteristicsandpropertiesofthequadrupolesourceisvitalfornoisecontrolmeasures. 3.ExperimentalStudy: 3.1TireNoiseMeasurements: Inthisstudy,varioustirenoisemeasurementswillbeconducted.Thetestscenarioswillincludedifferentoperatingconditionssuchasdifferentspeeds,differentroads