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ID:32993449
大小:9.38 MB
页数:92页
时间:2019-02-18
《crtsi型板式无砟轨道正线与道岔过渡段竖向动力分析》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、ABSTRACTEstablishedslabtrackandturnouttransitionsectionastheresearchobjectUsingacademicianZengQingyuan’Sconstantelasticpotentialenergyprinciplecalled”seatmatching”method.thispaperestablishedthevehiclemodelequations.andusedMATLABfortheprogramofvehicle
2、equationBasedontheestablishedANSYSmodel,usingANSYSextractionmatrixmethod,thispaperestablishedthefoundationmatrixAccordingtothematrixdocument’Sextractionforthe【oadanav.theIinepositionoftherajlnodesinthelowerfundamentalinatrixwasgottenTheuheel—raIIcoup
3、ledequationsduetotheircouplingl_elationshlpwasdeduced,combiningthevehiclematrixwiththelowerfundamentalmatrix’SlinepositionintoanentirematrixⅥ,ithtime—vaD'ingtrain—trackcouplingsystemMATLABwasusedforworkingOUtrelevantproceduresRunningthecalculationpro
4、gramforvibrationresponseofallpansintrain—railsystem,andthemodel’Saccuracywasverifiedbycomparingwithauthoritativepaper,byⅥhichthedynamicresponseoftheslabtrackwiththeturnoutwascalculatedTherefore.someconclusionsareadressed:whentheelasticmodulusofCAmort
5、arincreasesfrom200MPatO600MPa.slabtrack’Sdeformationandvibrationresponsewouldbothreduceby60%orSO;whenthefastenerverticalstiffnessincreasesfrom20to70.raildeforrnationwouldreduceby70%whichlcadstolessinfluenceOilrailacceleration;whentheslabtrackaccelera
6、tesincreasingbv70%.1esseffectwouldmakeonitsdisplacementdefonnation;、、henirregularitiesamplitudeincreasesfrom2mmto15lnnl.trainaccelerationwouldjncreaseby4.4times,whichmakeIesseffeCtonotherstatus;whenthespeedgrowsfrom160km/hto350kardh.railandslabtrack’
7、Saccelerationwouldgrowby3timesorso,othersareIesseffectedThewheel-railforcemainlyinfluencedbytherailsurfaceirregularityandthetrainspeedAtiersomeanalysis.jtwasfoundOUtthattheonlyinfluencefactorofstimlessmatchbetweeninterva】andturnoutareawastheirvemical
8、stiffnessoftheNstenenByadjustingtheverticalstiffimssparalnetersandsomecalculation,theconclusionwasadressed:whenIntervalstifineSSiSlargerthanverticalstifinessofturnoutareafastenerby12±1kN/mm.bothofthemwouldmatchwellTherefore,thesuggestedturnoutareasti
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