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钢轨磨损特性实验研究与数值分析 Title:ExperimentalInvestigationandNumericalAnalysisofRailWearCharacteristics Abstract: Railwearisacriticalissueintherailwayindustry,asexcessivewearcanleadtosafetyhazardsandincreasedmaintenancecosts.Thispaperaimstostudythewearcharacteristicsofsteelrailsthroughbothexperimentalinvestigationandnumericalanalysis.Theexperimentalstudyinvolvesconductingweartestsusingatestrig,whilethenumericalanalysisutilizesfiniteelementmodelingtosimulateandpredictthewearbehavioroftherails.Thefindingsfromboththeexperimentalandnumericalstudiescontributetoabetterunderstandingofthewearmechanismsandprovideinsightsforoptimizingrailmaintenancestrategies. 1.Introduction Theintroductionprovidesanoverviewofthesignificanceofrailwearanditsimpactonrailwayoperations.Theobjectivesofthestudyarealsooutlined,whichincludeinvestigatingthewearmechanisms,quantifyingwearrates,andanalyzingtheinfluencingfactors. 2.ExperimentalMethodology Thissectiondescribestheexperimentalsetup,includingthetestrigdesign,specimenpreparation,andtestingprocedure.Thechosenparametersandvariablesarejustified,andthetestingconditionsarespecified.Detailsaboutthemeasurementtechniquesemployedtoevaluatewearloss,suchasprofilometryandscanningelectronmicroscopy,arealsoprovided. 3.ExperimentalResultsandAnalysis Theresultsobtainedfromtheweartestsarepresentedandanalyzedinthissection.Thewearrateoftherailiscalculatedandcomparedunderdifferentoperatingconditions,suchasvaryingloadandspeed.Thewearmechanismsareinvestigatedthroughvisualobservationofwornsurfacesandanalysisofweardebris.Thediscussionhighlightsthedominantwearmechanismsandtheireffectsonrailwear. 4.NumericalModeling Inthissection,thefiniteelementmodeling(FEM)approachusedtosimulaterailwearisintroduced.Thematerialpropertiesandcontactparametersusedinthemodelarejustifiedbasedontheexperimentalresults.Thewearbehavioroftherailissimulatedundervariousloadingconditions,andthepredictionsarevalidatedagainsttheexperimentaldata. 5.NumericalResultsandDiscussion Thenumericalresultsarepresentedan