不同角度沟槽橡胶阻尼垫片对摩擦系统自激振动的影响研究

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1、TH117621ClassifiedIndex:TH117U.D.C:621SouthwestJiaotongUniversityMasterDegreeThesisTHEINFLUNENCEOFDIFFERENTANGLEDGROOVED-STRUCTUREDAMPINGCOMPONENTSONFRICTION-INDUCEDVIBRATIONGrade:2015Candidate:ZhangQiAcademicDegreeAppliedfor:MasterDegreeSpeciality:MechanicalEngineeringSup

2、ervisor:Asso.Prof.ZhaojingMay,2018Istick-slip1.ABAQUS2.II3.122Hz45454.ABAQUS455.stick-slipstick-slipstick-slip-45IIIAbstractWiththerapiddevelopmentofmoderntransportation,humanstandardsandrequirementsforallaspectsofcomfortarealsoincreasing.Thefriction-inducedvibrationandeve

3、nsquealnoisegeneratedduringthebrakingprocessofthevehiclewillgreatlyreducecomfort,andinfluencethephysicalandmentalhealthoftheoccupants.Howtosuppressthefriction-inducedvibrationgeneratedduringthebrakingprocessistheultimategoalpursuedbymanufacturersandresearchers.Dampingcompo

4、nentswithstructuralchangehavebeenappliedtodiscbrakesofsomecommontransportation,butthemechanismoftheinfluenceonfriction-inducedvibrationisstillambiguousatpresent.Differentarrangementofgroovedstructuresweredesignedandmanufacturedonthedampingcomponents,andtheinfluencemechanis

5、mofelasticdampingcomponentswithdifferent-angledgroovedstructuresonvibrationperformanceandtribologicalcharacteristicswasstudied.Thisworkisinnovatoryandofgreatengineeringapplicationvalue.Itisofgreatsignificancetoexploremethodsforsuppressingfriction-inducedvibrationofdiscbrak

6、es.Inthisstudy,anexperimentalsetupwhichiscapableofsimulatingdifferentbrakingconditionsofdiscbrakeswasdesignedandbuilt.Thetribologicaltestsunderdifferentbrakingpressureanddiscrotationalspeedwerecarriedoutontheexperimentalsetup,andtheinfluencemechanismofdifferenttestparamete

7、rsonfriction-inducedvibrationwasexploredbycombiningthefiniteelementmethod.Furthermore,thedampingcomponentswithdifferent-angledgroovedstructuresweredesignedandaddedintothefrictionsystemtoinvestigateitseffectonfriction-inducedvibrationandinterfacetribologicalproperties.Theme

8、chanismofhowthedampingcomponentswithdifferentstructuressuppressfriction-inducedvibrationw