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1、StudyonthereductionofvibrationandnoisebasedonthetrainwheelssectionoptimizationABSTRACTAlongwithourcountryeconomyhighspeeddevelopment,theincreaseofurbanpopulation,thetransportationpressureisalsogrowing,andtherailtransportationasakindofbigcapacity,safety,efficien
2、t,punctual,convenient,comfortableidealtransportation,hasbeenrapiddevelopment.Butwiththedevelopmentofinthemeantime,thevibrationoftherailtransitcausednoiseproblemisincreasinglyprominent,howtoeffectivelyreducethevibrationandnoiseproducedbythetrainoperationhasbecom
3、eahottopicintheresearchofscholarsbothathomeandabroad.Vehiclemulti-bodydynamicsmodelisestablishedinthispapertosimulatethevehiclebetweenthewheel/railandthefunction,itisconcludedthatthewheel/railinter-atomicforces,thestructuredynamicoptimizationmethodappliedtohigh
4、speedtrainwheelsofsectionsizeoptimizationdesign,thewheelsectionshapegeometryparametersasdesignvariables,theminimumvaluewheelstructurevibrationradiationnoiseastheobjectivefunctionofoptimizationcalculationexample.Wheelfiniteelementmodelandboundaryelementmodelises
5、tablishedandthetransientdynamicsanalysis,wheelacousticradiationcharacteristicsanalysisandtheevaluationofthenoisereduction,itisconcludedthatthewheelacousticradiationoptimizationsectionform.Thisarticlerevolvesaroundwheelacousticradiationoptimizationforthefollowin
6、gresearch:1,withmulti-bodydynamicsCRH3typecarparametersestablishedrailwayvehiclethree-dimensionalentitymodel,differenttrackirregularityspectrumanalysisresearchathomeandabroad,choosetheappropriatesampleirregularityspectrumspace.Incentivesforwheel/railsurfaceirre
7、gularities,simulatetheCRH3carsrunontheorbitat350km/htimeseriesofwheel/railverticalandhorizontalforces.2,combiningthetheoryofstructuraldynamicsandvibrationacoustic,thewheelvibrationnoisereductionoptimizationdesignmathematicalmodeltocarryonthedesign.Theminimumwhe
8、elvibrationradiationnoiseastheconditionstoestablishtheobjectivefunction,toselectthewheelsectionsizeasoptimaldesignvariables,atthesametime,accordingtowheelstrengthconditionco
