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ID:33111704
大小:10.62 MB
页数:91页
时间:2019-02-20
《重载货车轮轨相互作用力影响分析-(6209)》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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
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