基于ansys的轮轨三维非线性接触的影响因素分析分析

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1、基于ANSYS的轮轨三维非线性接触的影响因素分析研究AbstractWiththecontinuousgrowthoftrainspeedandload,thetraindrivingenvironmentisbecomingmoreandmoresevere.Soitwillputforwardhigherrequirementofvehicle,trackstructureandetcdesign.Thewheel/railisanimportantpartwhichcontactsvehiclesandfoundation,andthewheel/railcontactisthefund

2、amentalbasisoftraintraction,butalsofortheentiretransport.Manydisciplinesareinvolvedwhenstudythewheel/railrelationship.Wheel/railrollingcontacttheoryisthebasisfortheresearchandthewheel/railcontactbehavioristhekeyresearchcontent.Withthecomplexgeometriesandthehighnonlinearbehaviors,thewheel/railrelatio

3、nshiphasbecomeoneofthemostcomplicatedproblemsinthevehicleandtrackresearches.Highlyaccuratesolutionsarenotabletogetbyusingthetraditionalelasticmechanicscalculationmethod.Similarly,becauseofthebasicassumptionsofHertzcontacttheory,thecomplexproblemofwheel/railnonlinearcontactisnotdeeplystudied.Withthed

4、evelopmentofcomputertechnologyandfiniteelementtheory,threedimensional(3D)nonlinearwheel/railcontactstudybecomepossible.Furthermore,the3Dmodelisestablishedinaccordancewiththerealgeometriesofwheelandrail.Usingthecontactelementtosimulatehighlynonlinearwheel/railcontactproblem.ANSYS,whichisalargestructu

5、reanalysissoftware,providesagoodplatformforthe3Dnonlinearwheel/railcontactanalysis.Inthispaper,theHertzcontacttheoryandthefiniteelementmethoddealingwithnonlinearcontactproblemareintroduced.Onthisbasis,theinfluencefactorsofthewheel/rail3Dnonlinearstaticanddynamiccontactareresearched.Andwheel/rail3Dno

6、nlinearcontactfiniteelementmodelisestablishedbymakinguseoftheANSYS.TheTBconicaltreadand60kg/mrailareadoptedinmodeling.Therailbottomslopeis1:20.AccuratesizeshapeandstressdistributionofcontactareaarenotgottenthroughthetraditionalcalculationmethodsincludingHertzcontacttheoryandelasticanalysismethod.Due

7、totheabovereasons,ThemethodofusingtheANSYStoestablish3Dnonlinearwheel/railcontactcalculationmodelfortheanalysisofinfluencefactorsistaken.Staticcontactanalysisresultsshowthatthematerialplasticdeformati