轿车双质量飞轮动力特性研究(3)

发布时间:2021-06-05

武汉理工大学博七学位论文

Abstract

ThevehiclepowertrainiSamulti.freedomtorsionalvibrationsytem,anditstorsionalvibrationandnosiedecreasethesafety

11letorsionalvibrationofthevechilepowertrainandcomfortablenessofavehicle.originatesfromthefluctuationofenginerotatingspeedandtorque.Thetraditionalclutchdamperhasfinitedampingperformanceduetoitsspacestructureconstraint.DualMassFlywheelfOMF),asanewtypetorsionaldamper,hasfavorablework

appliedintoperformance,andtheniswidlythepassengercarsinoverseas.However,thepresentstatusofdevelopmentin

BasedonthisfieldstillrestonthetheoryresearchstageinChina.domesticandabroadrcsearchresultsanddevelopmenttrendaboutDMF,theCircumferentialarcspringDualMassFlywheel(cs-DMF)istakenforthestudyobjectinthisthesis.themethodofDMFisfurther

rotaryinertiastudied,whichincludescoefficientascertain,optimization

arcofeachtorsionalstiffnessandelasticcharacteristicsofCiteumferential

Firstofall,thetwo

underidlingspring.torsionalvibrationmodelsofDMFonundampedmulti.freedom

toanddrivingconditionarebuiltbasedtheprinciplesofvehiclepowertheelastictrainequivalenttorsionalmodel.Accordingmechanicaldynamicsand

characteristicofDMF,thedesignmodelofDMFisbuilt,thatis,thefirstordermodelandthesecondordermodel.

Secondly,therelationshipbetweenrotaryinertiacoefficient,torsionalstiffness,transmissiongearboxand

thetorsionalvibrationfrequencyisanalyzedonthebasisofandthedesignmodel.Furthermore,a

anddesignmethodofrotaryinertiathematchingmethodofcoefficientfirstleveltorsionalstiffnessDMFandtransmission

thefirstleveltorsional

ongearboxareproposed.Afterwards,therelationshipbetweenstiffnessandthesecondleveltorsionalstiffnessiSderivedout

springsSOthebasisoftheinstallationformofthe

torsionalstiffnessisthatthedesignmethodofthesecondlevelestablished.Moreover,theoptimizationprincipleandmethodofthetwolevelstorsionalstiffnessunderdrivingconditionisstudied.Inthelate'r,theelasticcharacteristicsofthespringisanalyzedbythediscretemethod,andthenthecalculationformulafortheelasticcharacteristiesiS

conditionsofthe

Thirdly,the

derivedout,andalsothesuitableformulaiSdesigndiscussed.modelanddesignmethodofDMFareverifiedbytorsional

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