全地形车辆转向节的有限元分析外文文献翻译中英文翻译外文翻译.docx

全地形车辆转向节的有限元分析外文文献翻译中英文翻译外文翻译.docx

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全地形车辆转向节的有限元分析外文文献翻译中英文翻译外文翻译

AnalysisofSteeringKnuckleofAllTerrainVehicles（ATV）

UsingFiniteElementAnalysis

Abstract:

SteeringknuckleisthemoststresssustainingandcriticalcomponentofAllTerrainVehicle（ATV）.Steeringknuckleisthepivotpointofthesteeringandsuspensionsystem,whichallowsthefrontwheelstoturnandalsoallowthemovementofsuspensionarmsmotion.Thelightweightandhighstrengthcomponentisalwaysindemandingforracecarapplication.Lightweightandoptimizeddesignofsteering

knuckleisproposedtouseforaBAJASAEINDIAoffroadracecar.Duetothefailureinknuckleinterrainvehicleaftersomeinstances,ithastobemodifiedforbetterperformance.The3DCADmodelcreatedbyusingCATIAV5andstaticaswellasmodelanalysiscarriedoutinANSYS12tounderstanditsbehaviorunderoperatingconditions.Alltestforframewascarriedoutonaluminumalloys6061-T6&forspindleEN8.ThepaperdiscussestheFEanalysisofexistingandmodifiedSteeringKnuckle.

1.Introduction

All-terrainvehicleisdesignforBAJAeventisorganizedbySAEINDIAandMahindra&Mahindrainthe2015.Theobjectofthecompetitionistosimulatereal-worldengineeringdesignprojectsandtheirrelatedchallenges.Eachteamiscompetingtohaveitsdesignacceptedformanufacturebyafictitiousfirm.Eachteam'sgoalistodesignandbuildasingle-seat,all-terrain,sportingvehiclewhosestructurecontainsthedriver.

Asteeringknuckleisacomponentoverwhichawheelhubhasbeenmountedandsupportforsteeringandbrakingwhichoperatingunderveryhighstresscondition.Steeringknuckleisnotastandardpartofterrainvehiclecomponentbutitmaybechangeforeveryracecar.Thus,thedesignmayvarytofitallsortsofapplicationsandsuspensiontypes.ACADmodelofexistingsteeringknuckleisshowninfigure1isappliedintheracecarasshowninfigure3.Finiteelementanalysis（FEA）isamethodforpredictinghowaproductreactstoreal-worldforces,vibrationandotherphysicaleffects.FEanalysisshowswhetheraproductwillwearout,break,orworkthewayitdesigned.

Theadvancedoptimizationtechniqueshelptoexplorethelightweightarchitecture.RajendranetaldiscussestheprocessofdesigninglightweightKnucklefromscratchwhichcanbeapplicableformanycastingcomponents.Toderivetheoptimalloadpathrequiredforthemajorloadcasesatopologyoptimizationisperformedonthedesignvolumeandprepareaconceptmodelfromthetopologyresultsgenerated.Themodelisverifiedforalltherequiredextremeloads&thedurabilityloadwhichhelpsforsignificantmassreductionfrommodel.

ChangandTangpresentedanintegrateddesignandmanufacturingapproachthatsupportsshapeoptimizationofstructuralcomponent.Theapproachstartsfromaprimitiveconceptstage,whereboundaryandloadingconditionofstructuralcomponentaregiventothedesigner.Topologyoptimizationisconductedforastructurallayout.A3Dtrackedvehicleroadarmisemployedtoillustrateoveralldesignprocessandvarioustechniquesinvolved.

AccordingtoB.Babuetal,SteeringKnuckleplaysmajorroleinmanydirectioncontrolofthevehicleitisalsolinkedwithotherlinkagesandsupportstheverticalweightofthecar.Studyinvolvesmodellingofthesteeringknucklewiththedesignparametersusingthelatestmodellingsoftware,andalsoitincludesthedeterminationofloadsactingonthesteeringknuckleasafunctionoftime.Thisisdoneforfindingouttheminimumstressarea.

ChangYongSongdiscussesreliability-baseddesignoptimization（RBDO）ofanautomotiveknucklecomponentunderbumpandbrakeloadingconditions.Theprobabilisticdesignproblemistominimizetheweightofaknucklecomponentsubjecttostresses,deformations,andfrequencyconstraintsinordertomeetthegiventargetreliability.Theinitialdesignisgeneratedbasedonanactualvehiclespecification.ThefiniteelementanalysisisconductedusingABAQUS,andtheprobabilisticoptimalsolutionsareobtainedviathemovingleastsquaresmethod（MLSM）inthecontextofapproximateoptimization.

Inthepresentstudy,designofadurableandreliablesteeringknuckleforaracecarbeinganultimateaimtobeachieved.Developmentofracecarcomponentstiedwiththeregulationsdrawnbytheorganizer.Inexistingdesignofknuckle,whichhasverylessweight,butatthetimeofraceasteeringarmhasseparatedfromtheknuckleduetolowstrengthofknuckleandhighstrengthofboltedjointasshowninfigure2.Whilesteeringanarmpullsknuckletowardsacarforturning,soitshouldbeassembledwiththeknuckletostrengthenasteeringandbrakingmechanism.Inproposeddesign,asinglepieceofknuckleincludesthesteeringarmandbrakecaliperandnotprovideanyboltedjointtoimproveitsstrengthandattachedtoknuckledirectly.

Figure