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1、武漢理工大學(xué)碩士學(xué)位論文基于ADAMS的盤式制動器多柔體仿真分析姓名:張坤申請學(xué)位級別:碩士專業(yè):車輛工程指導(dǎo)教師:楊波20100501武漢理工大學(xué)碩士學(xué)位論文AbstractWiththedevelopmentoftheeconomic,thevehicleshavebeenoneofthebestmeansoftransportationinmodemtimeBecausethebrakesplayanimportantpartin
2、thevehicles’SafetyandComfort,howteducethecars’brakevibrationandnoisehasbecomeanimportantresearchtopicFirstthepaperintroducedthehistoryofbrakes,theresearchstatusofbrakevibrationandnoise,thenintroducedamultibodydynamicmode
3、lofthebasictheoryandselfexcitedvibrationtheoreticalofthediscbrakevibration,AllthesetheoriesprovideafeasiblemeansforfurtherdevelopNext,introducedhowtobuildtheflexiblemultibodyofthebrakesystemusingtheFEAtechnologyandthemul
4、tibodydynamictechnologyIncludinghowtogetthemodelneutralfile(MNF)ofthebrakediscandbrakepadbyutilizingtheFEAtechnologyIntheprocessofbuildingtheMNF,thefreemodelanalysisofthebrakediscandpadswerestudiedIntroducedtheprocessoft
5、hemultibodydynamicsmodeling:importflexiblebodiesandrigidebodies,inorderteducethecomputingtime,themacrocommandWasappliedtoadddummypartsonflexiblebodyInordertocalculateaccurately,shouldgavetherigidbodyiesacertainmaterialpr
6、operties,addtheconstraintsbetweenthevariouscomponents,etcAtlastveryfythemodelThepressureandfrictionbetweenthediscandbrakepadswereachievedbythemacrocommandThebrakeangularvelocityandaccelerationcurvescanbecarriedoutbydynam
7、icalsimulationandanalysisFromthesecurveswecangetthatthefrictionincreasesalongwiththefrictioncoe伍cient,butthemore1ikelytobrakevibrationandnoiseoccurs,thevibrationandnoisecanworsenthestabilityofthebrakesystemIncontrary,ifw
8、elowerthefrictioncoe伍cient,thebrakinge伍ciencywillalsolowerSoⅥmellselectingbrakepads,thefrictioncoefficientmustfulfilltherequestofbothbrakee伍ciencyandstabilityThebrakevibrationandnoisewouldalsohappenwheninstallationelrors
9、occurredintheautomotivebrake,theinstallationerrorsmeansbrakediscrotationaxisandthediscaxisdon’tcoincideTheflexiblemultibodymodelnotonlyconcernedtheflexibilitydeformationofthecomponentsofthebrakesystem,butalsoconcernedthe
10、influenceofmomentofinertiaoftherotatingcomponentsoftheautomobile,SOthesimulationWasmorereasonableThemethodofbuildingtheflexiblemultibodymodelisuniversalanditCanbeusefulforfuturediskbrakenoiseanalysisandstructuraloptimiza
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