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ID:33013199
大小:3.34 MB
页数:76页
时间:2019-02-19
《铁道车辆空气弹簧刚度分析》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、国内图书分类号:U270.33密级:公开国际图书分类号:629西南交通大学研究生学位论文年级三雯委2∑级姓名医盆申请学位级别亟±专业奎堑工程.指导老师奎董数援二零一一年四月一日西南交通大学硕士研究生学位论文第1I页AbstractAlongwith0111"country'shighspeedrailwayconstructionandthepromotionofthepassengertrain’Sspeed,undertheguaranteeofthesecurity'spremisepursui
2、nglongdistanceandshorttime'sconcepthasstruckrootintheheartsofthepeople.TherailroadpassengernolongersatisfymerelyinthejourneytransportationvehiclewhichridesCansafelyandpunctuallyarriveatthedestination,butistheunionofthespeed,ridescomfortableness,andthese
3、curity.High-speedrailroadletpassengerwhotakethetrainwhileenjoysthehighspeedrailroadtobringconvenientandefficiency,highlyaffirmingthevehicleswhichbetakentojourneycallbringcomfortablenessandstability.Asisknowntoa11,11igh·speedtrainsandrailsisbelongtowheel
4、/railcontact,anditsspeedisaverageabove200km/h,insatisfyingthestructuralstrengthunderthecondition,whetheritsdynamicsfactorcallsatisfythemovementquality'srequestunderthehighspeedtravelbecomethedeterminingfactor.thetrainwhichmove、析廿1llighspeedwillunavoidab
5、lyreceivefromtheTrackirregularityandtheexcitationwhichthecurvebringto,thusproducingverticalandlateralvibration,whichhasthetremendousinfluencetovehicles’safetyinoperation,thestabilityandthecomfortable.howtoalleviatethiskindofexcitation,becomesthekeyofimp
6、rovingthevehiclesmovementquality.Asvehicle'sshockattenuationdevice,theair-springcomparesthesteel-springhasobvioussuperiority,mainlydisplaysinthestiffnessonnonlinearcharacteristics.Ordinarysteel-spring'sstiffnesscannotbeadjustedinthebeginningofdesign,jus
7、taccordingtotheoperationsectionsdosomeimprovement,whichresultingintheobdousdifferenceoftheridingqualitybetweenthedifferentloadvehicles.Whileair-springCanaccordingtothedifferenceontheloadadjustthestiffness,whichassuringthesteadyofthenaturalfrequencyofvib
8、ration,additionallywiththeeffectofthelevelingvalvemakingthevehicle’Sridingqualitymoresteady.ThefiniteelementSOflV矿are'Ssimulationhavethemeritforreducingtheexperimentcostalltheexperimentcycle,whichcallalsoprovideamorehighlyeffecti
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