资源描述：
《外文翻译--汽车悬架是如何工作的》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。
1、附录：英文原材料HowCarSuspensionsWorkWithoutaninterveningstructure,allofwheel'sverticalenergyistransferredtotheframe,whichmovesinthesamedirection.Insuchasituation,thewheelscanlosecontactwiththeroadcompletely.Then,underthedownwardforceofgravity,thewheelscanslambackintotheroadsurface.Whaty
2、ouneedisasystemthatwillabsorbtheenergyoftheverticallyacceleratedwheel,allowingtheframeandbodytorideundisturbedwhilethewheelsfollowbumpsintheroad.Thestudyoftheforcesatworkonamovingcariscalledvehicledynamics,andyouneedtounderstandsomeoftheseconceptsinordertoappreciatewhyasuspension
3、isnecessaryinthefirstplace.Mostautomobileengineersconsiderthedynamicsofamovingcarfromtwoperspectives:Ride-acar'sabilitytosmoothoutabumpyroadHandling-acar'sabilitytosafelyaccelerate,brakeandcornerThesetwocharacteristicscanbefurtherdescribedinthreeimportantprinciples-roadisolation,
4、roadholdingandcornering.Thetablebelowdescribestheseprinciplesandhowengineersattempttosolvethechallengesuniquetoeach.PrincipleDefinitionGoalSolutionRoadIsolationThevehicle'sabilitytoabsorborisolateroadshockfromthepassengercompartmentAllowthevehiclebodytorideundisturbedwhiletraveli
5、ngoverroughroads.Absorbenergyfromroadbumpsanddissipateitwithoutcausingundueoscillationinthevehicle.RoadHoldingThedegreetowhichacarmaintainscontactwiththeroadsurfaceinvarioustypesofdirectionalchangesandinastraightline(Example:Theweightofacarwillshiftfromthereartirestothefronttires
6、duringbraking.BecausethenoseofthecardipsKeepthetiresincontactwiththeground,becauseitisthefrictionbetweenthetiresandtheroadthataffectsavehicle'sMinimizethetransferofvehicleweightfromsidetosideandfronttoback,asthistransferofweightreducesthetire'sgriponthetowardtheroad,thistypeofmot
7、ionisknownas"dive."Theoppositeeffect"squat"occursduringacceleration,whichshiftstheweightofthecarfromthefronttirestotheback.)abilitytosteer,brakeandaccelerate.road.CorneringTheabilityofavehicletotravelacurvedpathMinimizebodyroll,whichoccursascentrifugalforcepushesoutwardonacar'sce
8、nterofgravitywhilecornering,raisingonesi
