制动器外文翻译__曹鹏程制动器外文翻译__曹鹏程制动器外文翻译__曹鹏程太原理工大学机械工程学院毕业设计外文翻译学生姓名：曹鹏程专业班级：车辆工程1001指导教师:朱建军THEBRAKEBIBLEBrakes-whatdotheydo?Thesimpleanswer：theyslowyoudown。Thecomplexanswer:brakesaredesignedtoslowdownyourvehiclebutprobablynotbythemeansthatyouthink。Thecommonmisconceptionisthatbrakessqueezeagainstadrumordisc，andthepressureofthesqueezingactioniswhatslowsyoudown.Thisinfactisonlypartoftheequation。Brakesareessentiallyamechanismtochangeenergytypes.Whenyou'retravellingatspeed,yourvehiclehaskineticenergy.Whenyouapplythebrakes，thepadsorshoesthatpressagainstthebrakedrumorrotorconvertthatenergyintothermalenergyviafriction。Thecoolingofthebrakesdissipatestheheatandthevehicleslowsdown.It'stheFirstLawofThermodynamics，sometimesknownasthelawofconservationofenergy。Thisstatesthatenergycannotbecreatednordestroyed,itcanonlybeconvertedfromoneformtoanother。Inthecaseofbrakes，itisconvertedfromkineticenergytothermalenergy.Angularforce.Becauseoftheconfigurationofthebrakepadsandrotorinadiscbrake，thelocationofthepointofcontactwherethefrictionisgeneratedalsoprovidesamechanicalmomenttoresisttheturningmotionoftherotor.Thermodynamics,brakefadeanddrilledrotors。Ifyourideamotorbikeordrivearacecar，you'reprobablyfamiliarwiththetermbrakefade，usedtodescribewhathappenstobrakeswhentheygettoohot.Agoodexampleiscomingdownamountainpassusingyourbrakesratherthanyourenginetoslowyoudown.Asyoustarttocomedownthepass，thebrakesonyourvehicleheatup，slowingyoudown.Butifyoukeepusingthem，therotorsordrumsstayhotandgetnochancetocooloff.Atsomepointtheycan’tabsorbanymoreheatsothebrakepadsheatupinstead.Ineverybrakepadthereisthefrictionmaterialthatisheldtogetherwithsomesortofresinandoncethisstartstogettoohot,theresinstartstovapourise，formingagas。Becausethegascan'tstaybetweenthepadandtherotor,itformsathinlayerbetweenthetwowhilsttryingtoescape.Thepadslosecontactwiththerotor，reducingtheamountoffrictionandvoila。Completebrakefade.Thetypicalremedyforthiswouldbetogetthevehicletoastopandwaitforafewminutes.Asthe