地铁转向架构架疲劳评价与载荷谱试验分析

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1、ABSTRACTABSTRACT：WiththeincreasinggrowthofthemetiDvehiclespeedandthepassengercarryingcapacity，thefatiguepropertyofthemetromotorbogiesturnsintoanextremelyimportantissue．Thecauseofthefatiguedamageisthedynamic10adenduredwhenrailwayvehiclerunsoilactuallines．Rrequire

2、sanalyzingthe‘'load-timehistory"ofthesubway，andestablishingtherepresentativeloadspectrumofitsstructuralcomponentsunderactualoperatingconditions，SOastoffflsurethatthestructuralstrengthofthemetromotorbogiescanmeettheneedsofpracticaloperation．Thisthesisfocusedonthe

3、loadspectrumcompilationof15thlineforBcijingsubway．ANSYSsoRwareWasappliedtocarryoutthefiniteelementcalculationforthefiniteelementmodelofmetrovehiclebogiefl"amo．Basingonpracticalexperience，itdeterminedrelativelyaccuraterecognizemethodsfordifferentloads，whichWel"eu

4、sedinactualmeasurement．IMCdatacollectionapparatuswasemployedtogatherdata丘om"Houshayu-WangjingWest'’sectionof15thlineforBeijingsubway．SpecialdataanalysissoftwareMyCode，compiledbySchoolofMochanical，ElectricandControlEngineeringofBeijingJiaotongUniversity，wasusedto

5、process，sun卫卫Iarize，concludeandarrangethedata．Underoperatingconditions，Weestablishedthefollowingloadspectrumofthisline：float-and-sinkload，side-rollingload，torsionalload，lateralload，verticalloadandbrakingIoad,basedonthat，thebogieframefatiguestrengthWasonthestudy．

6、Italsocomputedthesh弓sstransfercoefficientsforthefatiguekeypointsineachloadspectrum．Combinedwiththestress印leI∞砌ofkeymeasurementpoints，itcomparedtheinjurecompatibilitycalculatedbythistwomethodstocarryouttheinjurecompatibilitychecking．Finally，WCobtainedtheloadspect

7、rumwhichhadpracticalsignificance．Itprovidesreliable10adbasisforthedesignofmetromotorbogiesinfuture．．KEY、7旧RDS：me呐motorbogiefl'Rlne；loadidentification：loadspectrum；injurecompatibility．CLASSN0：U271．92目录中文摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯。iiiABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

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