基于有限元的鐵路車載變流器柜強度與疲勞壽命分析.pdf

1、中南大學碩士學位論文基于有限元的鐵路車載變流器柜強度與疲勞壽命分析姓名：王超申請學位級別：碩士專業(yè)：載運工具運用工程指導教師：田紅旗20071101ABSTRACTTheMechanicalpropertiesofrailwayvehicleconvertercabinetaffectthereliabilityofelectronicsystemsandsafetyoftrainoperationdirectlyWiththeadva

2、ncementoftrainspeed，fatiguefailureofvehicleconvertercabinetsbecomesmoreandmoreseriousInordertokeepreliabilityofthecabinet，itneedsUStostudythestructurestrengthandfatiguepropertyurgentlyOwingtothefailureofobtainingpractica

3、lfatigueloadspectrumofstructure，obtainingstressdistributionbythefiniteelementmethod，makinganexperimentalfatiguelifepredicationonthestructurewithexperimentalstandardloadspectrumandcarryingoutprototypefatiguetestisaneffect

4、ivewaytokeepdurabilityofthestructureinthedesigningstageThethesissummarizespresentstatusofthestrengthandfatigueanalysisofdomesticconvertercabinet，andamethodoffatiguestrengthanalysisbasedonexperimentalstandardforthecabinet

5、isbroughtforwardFiniteelementmodelofconvertercabinetwasbuiltwithanalysissoftwareANSYSThenstaticstrengthanalysis，modelanalysisandimpactstrengthanalysisonthecabinetwerecarriedoutaccordingtocorrelativestandardsBasedonthestr

6、essdistributionofconvertercabinetunderunitload，thenominalstressapproachoffiniteelementandexperimentalstandardloadspectrum，fatiguesimulationoftheconvenercabinetwasfinishedwithMSCFatigueThus，wegot98％totalfatiguelifedistrib