凸轮的分析和应用——机械类中英文翻译、外文翻译

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1、本科生毕业设计（论文）外文翻译毕业设计（论文）题目：XXXXXXXXXXXXXXXXXXXXXXXXX外文题目：FailureAnalysis，DimensionalDeterminationAndAnalysis，ApplicationsOfCams译文题目：故障的分析、尺寸的决定以及凸轮的分析和应用学生姓名：专业：指导教师姓名：评阅日期：原文FailureAnalysis，DimensionalDeterminationAndAnalysis，ApplicationsOfCamsINTRODUCTIONItisabs

2、olutelyessentialthatadesignengineerknowhowandwhypartsfailsothatreliablemachinesthatrequireminimummaintenancecanbedesigned．Sometimesafailurecanbeserious，suchaswhenatireblowsoutonanautomobiletravelingathighspeed．Ontheotherhand，afailuremaybenomorethananuisance．Anexa

3、mpleisthelooseningoftheradiatorhoseinanautomobilecoolingsystem．Theconsequenceofthislatterfailureisusuallythelossofsomeradiatorcoolant，aconditionthatisreadilydetectedandcorrected．Thetypeofloadapartabsorbsisjustassignificantasthemagnitude．Generallyspeaking，dynamicl

4、oadswithdirectionreversalscausegreaterdifficultythanstaticloads，andtherefore，fatiguestrengthmustbeconsidered．Anotherconcerniswhetherthematerialisductileorbrittle．Forexample，brittlematerialsareconsideredtobeunacceptablewherefatigueisinvolved．Manypeoplemistakinglyi

5、nterpretthewordfailuretomeantheactualbreakageofapart．However，adesignengineermustconsiderabroaderunderstandingofwhatappreciabledeformationoccurs．Aductilematerial，howeverwilldeformalargeamountpriortorupture．Excessivedeformation，withoutfracture，maycauseamachinetofai

6、lbecausethedeformedpartinterfereswithamovingsecondpart．Therefore，apartfails(evenifithasnotphysicallybroken)wheneveritnolongerfulfillsitsrequiredfunction．Sometimesfailuremaybeduetoabnormalfrictionorvibrationbetweentwomatingparts．Failurealsomaybeduetoaphenomenoncal

7、ledcreep，whichistheplasticflowofamaterialunderloadatelevatedtemperatures．Inaddition，theactualshapeofapartmayberesponsibleforfailure．Forexample，stressconcentrationsduetosuddenchangesincontourmustbetakenintoaccount．Evaluationofstressconsiderationsisespeciallyimport

8、antwhentherearedynamicloadswithdirectionreversalsandthematerialisnotveryductile．Ingeneral，thedesignengineermustconsiderallpossiblemodesoffailure，whichincludeth