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基于ADAMS的多轴汽车操纵稳定性研究 Abstract Inrecentyears,asthedemandforautomobileshascontinuouslyexpanded,theresearchonthestabilityofmulti-axisvehicleshasbecomeincreasinglyimportant.Thispaperfocusesonthestudyofmulti-axisvehiclehandlingstabilitybasedonADAMS.Firstly,theADAMSsoftwareisintroduced,andthestructuralmodelofthemulti-axisvehicleisestablished.Secondly,thevehiclehandlingstabilityperformanceisanalyzedthroughthesimulationexperiment,suchasrollangle,yawangle,lateraldisplacement,andfrontwheelsteeringangle.Finally,thefactorsaffectingthestabilityofmulti-axisvehiclesareanalyzed,andsomesuggestionsareputforwardtoimprovethestabilityofmulti-axisvehicles. Introduction Withtherapiddevelopmentoftheautomotiveindustry,theperformancerequirementsformulti-axisvehiclessuchasheavy-dutytrucks,buses,andengineeringvehicleshavebecomehigherandhigher.Thesafetyandstabilityofmulti-axisvehiclesarecriticaltoensurethesmoothprogressoftransportation.Therefore,theresearchonmulti-axisvehiclestabilityhasgraduallybecomethefocusofattentionintheautomotiveindustry.Inthiscontext,ADAMS,asapowerfultoolofdynamicsanalysissoftware,hasbecomemoreandmorewidelyusedinvehiclestabilityresearch. TheADAMSSoftware ADAMSisshortforAutomaticDynamicAnalysisofMechanicalSystems.Itisapowerfulgeneral-purposemechanicalsystemdynamicssoftware,whichiswidelyusedinthefieldofmechanicaldesignandsimulation.ADAMSsoftwareisbasedonthemultibodysystemdynamicsmethod,whichanalyzesthedynamicbehaviorofmechanicalsystems. StructuralModelofMulti-AxisVehicle Thestructureofmulti-axisvehiclesischaracterizedbyhighcenterofgravity,largemass,andcomplexstructure.Tosimulatethemovementofmulti-axisvehiclesaccurately,thedeterminationofstructuralmodeliscritical.Thestructuralmodelofthemulti-axisvehicleisestablishedbyusingADAMSsoftware. Themodelconsistsofthevehiclebody,suspensionsystem,andtire-terraininteractionmodel.Thevehiclebodyisarigidbodymodel,whichiscomposedofframes,beams,andplates.Thesuspensionsystemismodeledasaspring-dampersystem,whichconsistsofcoilsprings,shockabsor