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1、ThesimulationanalysisandtestingresearchonconcretemixertruckdrivingsmoothADissertationSubmittedfortheDegreeofMasterCandidate：ZhangKejunSupervisor：Prof.WangGuoqingChang’anUniversity,Xi’an,China摘要关键词：行驶平顺性，多刚体动力学，ADAMS，振动试验，混凝土搅拌运输车IAbstractDrivingsmoothofvehicleshasbecomeanimportantindexofe
2、valuationvehicles,basedonthesoftwareADAMSasaplatform,withtheconcretemixingtransporterastheobjectofresearch,thispaperisthestudyabouttheconcretemixertruckondrivingsmooth.Thispaperinvestigatestheconcretemixertruckdrivingsmoothmainlyfromtwoaspects:thesimulationanalysisbasedonADAMSandtheexperi
3、mentalanalysisbasedontests,themaincontentsofthestudyareasfollows:Inthepaperavehiclemulti-rigid-bodydynamicsmodelisutilized,andthemodelisverifiedbyexperiments.Themulti-rigid-bodymodelingprocessonmainframe,viceframeisstudiedfirstly,andmodalanalysisaredidonthedynamicmodel,theresultsindicatet
4、hatthedynamicalmodalanalysisresultsofmainframe,viceframeandthemodalanalysisresultsareconsistent.Then,onthevehicledynamicmodelingofthemainparametersidentification,dynamicsmodelingisdidfortheprimaryconnectionlinks.andisincorporatedwiththemodelofmainframe,viceframetoestablishthevehicledynami
5、cmodel.Theaccuracyofvehicledynamicsmodelisshowedthroughverticalvibrationnaturalfrequencyfromtheexperimentandthevibrationsizetrendofthemainpoints.Thevehiclevibrationmodalanalysis,transferfunctionanalysisandfrequencyresponseanalysisaredidonthevehicledynamicsmodeloftheconcretemixertruck.Them
6、odalanalysisdeterminethevehicleresonancemodalfrequenciesandmodalshape,theanalysisofthetransferfunctionandfrequencyresponseshowsthatthevehicleresonancecomesfromthedrivingsourcethatisproducedbetweengroundandwheelsThesensitivityanalysisisdidonthekineticparameterthataffectedtothecab,theresult
7、sshowthatFormerengine-mountrigiditycoefficient,afterengine-mountrigiditycoefficient,formerengine-mountdampingcoefficient,mainshockabsorber'sdampingcoefficient,formerleaf-springverticalrigiditycoefficient,cabinengine-mountdampingcoefficientarethekeykineticparameterst
