重载货车轮轨相互作用力影响分析-(6209)

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1、西南交通大学硕士研究生学位论文第1I页AbstractWiththerapiddevelopmentofeconomyinChina，therailwayfreightvolumeincreases。Developmentofheavy—loadtransportationcangivefullplaytotheadvantagesofrailwayffeighttransportation，improvethelinetransportcapacityandtrafficvolume，realizetheexpressshipment．Themainstreamofheavy-loadt

2、ransportationistoincreasetheaxleload，increaseperlinearmetertrainloadeffectively，makefulluseoftheexistingstationlinelength．However，theincreaseofwagonaxleloadisboundtobringtheinteractionbetweenthewheelandrailadverselyeffects．Wheel／railinteraction，especiallytheverticalwheel／railforcewillincrease．Dete

3、riorationthevehicle’Ssmoothoperationandsecurity，destructionofthetrackstructure，exacerbatingthelinedeformation．Duetoheavy·loadthetrainlengthandtheaxleload，operationprocessneedmoretractionandbrakingforce，longtransmissiondistance，resultintrainloadingcomplex，easytocausethetrainimpulse，derailment，vehic

4、leequipmentdamageandotherproblems．Therefore，theresearchandanalysisofvehicleandtrackparametersontheinfluenceofwheel／railinteractionforcehasaveryimportantpracticalsignificancetothedevelopmentofChina’Sheavy-loadtransportation．Thispaperreviewsthecurrentdevelopmentofdomesticandinternationalheavy—loadtr

5、ansportation．BrieflyexpoundsOffthedevelopmentofwheel／railinteraction．Basedonthetheoryofvehiclesystemdynamics，stressanalysisofheavyaxle-loadwagonparts，setupacorrespondingequationofmotion．AccordingtostructurecharacteristicsandsuspensionofC80heavyhaulwagon，simplifythenonlinearfactors，dynamicssimulati

6、onmodelisestablished．Onthebasisofaboveanalysisanddynamicsimulationmodeling，thispaperanalyzestherelatedparametersofheavyhaulwagonvehicleandtrackontheinfluenceofwheel／railinteractionforce．Mainlyfromtherunspeed，bearingsaddleunsprungmass，elasticrubberpadverticalstiffness，theverticalstiffnessofbolsters

7、pringoneachside，wheeltreadshapewheel，eccentricwheelqualityandpolygonizationvehicleparameterstoexplorerelatedparametersontheinfluenceofwheel／railverticaldynamicaction．Trackparameterssuchaswheel／railfrictioncoeffic