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齿面点蚀对航空螺旋锥齿轮副啮合特性影响分析.docx

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齿面点蚀对航空螺旋锥齿轮副啮合特性影响分析 Title:AnalysisoftheImpactofSurfacePittingontheMeshingCharacteristicsofAviationHelicalConicalGears Abstract: Aviationhelicalconicalgearsplayacrucialroleinensuringthereliableandefficientfunctioningofaircraftpropulsionsystems.However,thepresenceofsurfacepittingcansignificantlyaffectthegearmeshingcharacteristics,leadingtobothperformancedegradationandpotentialsafetyrisks.Therefore,thispaperaimstoanalyzetheinfluenceofsurfacepittingonthemeshingcharacteristicsofaviationhelicalconicalgears.Thestudybeginswithanintroductiontotheimportanceofgearteethinaviationapplications,followedbyareviewofthecausesandtypesoftoothsurfacepitting.Subsequently,thepaperinvestigatestheeffectsofpittingonmeshingcharacteristics,suchascontactratio,transmissionerror,loaddistribution,andvibrationlevels.Furthermore,variouspreventiveandmitigatingmeasuresagainstsurfacepittingarediscussed,includingsurfacetreatments,materialselection,lubrication,andgeardesignoptimization.Finally,aconclusionisdrawntosummarizethefindingsandhighlightthesignificanceofmanagingsurfacepittingtoensurethesafeandefficientoperationofaviationhelicalconicalgears. 1.Introduction Aviationhelicalconicalgearsarewidelyusedinaircraftpropulsionsystemsduetotheirexcellentloadcarryingcapacity,torquetransmissioncapability,andcompactsize.Helicalconicalgearsprovidesmoothandefficientpowertransmissionbetweentheengineandpropellershaft.However,thepresenceoftoothsurfacepittingcansignificantlycompromisetheperformanceandreliabilityofthesegears.Itiscrucialtounderstandthecauses,types,andeffectsofsurfacepittingonthemeshingcharacteristicsofaviationhelicalconicalgears. 2.CausesandTypesofSurfacePitting Surfacepittingcanresultfromvariousfactors,includinginadequatelubrication,excessiveloads,materialdefects,andforeignparticlecontamination.Thetypesofsurfacepittingincludemicropitting,macropitting,andpittingfatigue.Eachtypehasdistinctcharacteristicsandimplicationsforgearoperation. 3.EffectsofSurfacePittingonMeshingCharacteristics 3.1ContactRatio:Su