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1、StudyonthereductionofvibrationandnoisebasedonthetrainwheelssectionoptimizationABSTRACTAlongwithourcountryeconomyhighspeeddevelopment,theincreaseofurbanpopulation,thetransportationpressureisalsogrowing,andtherailtransportationasakindofbigcapacity,safety,effic
2、ient,punctual,convenient,comfortableidealtransportation,hasbeenrapiddevelopment.Butwiththedevelopmentofinthemeantime,thevibrationoftherailtransitcausednoiseproblemisincreasinglyprominent,howtoeffectivelyreducethevibrationandnoiseproducedbythetrainoperationha
3、sbecomeahottopicintheresearchofscholarsbothathomeandabroad.Vehiclemulti-bodydynamicsmodelisestablishedinthispapertosimulatethevehiclebetweenthewheel/railandthefunction,itisconcludedthatthewheel/railinter-atomicforces,thestructuredynamicoptimizationmethodappl
4、iedtohighspeedtrainwheelsofsectionsizeoptimizationdesign,thewheelsectionshapegeometryparametersasdesignvariables,theminimumvaluewheelstructurevibrationradiationnoiseastheobjectivefunctionofoptimizationcalculationexample.Wheelfiniteelementmodelandboundaryelem
5、entmodelisestablishedandthetransientdynamicsanalysis,wheelacousticradiationcharacteristicsanalysisandtheevaluationofthenoisereduction,itisconcludedthatthewheelacousticradiationoptimizationsectionform.Thisarticlerevolvesaroundwheelacousticradiationoptimizatio
6、nforthefollowingresearch:1,withmulti-bodydynamicsCRH3typecarparametersestablishedrailwayvehiclethree-dimensionalentitymodel,differenttrackirregularityspectrumanalysisresearchathomeandabroad,choosetheappropriatesampleirregularityspectrumspace.Incentivesforwhe
7、el/railsurfaceirregularities,simulatetheCRH3carsrunontheorbitat350km/htimeseriesofwheel/railverticalandhorizontalforces.2,combiningthetheoryofstructuraldynamicsandvibrationacoustic,thewheelvibrationnoisereductionoptimizationdesignmathematicalmodeltocarryonth
8、edesign.Theminimumwheelvibrationradiationnoiseastheconditionstoestablishtheobjectivefunction,toselectthewheelsectionsizeasoptimaldesignvariables,atthesametime,accordingtowheelstrengthconditionco
