机械专业毕业论文_外文翻译

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1、word文档整理分享附录一英文科技文献翻译英文原文：ExperimentalinvestigationoflasersurfacetexturedparallelthrustbearingsPerformanceenhancementsbylasersurfacetexturing(LST)ofparallel-thrustbearingsisexperimentallyinvestigated.Testresultsarecomparedwithatheoreticalmodelandgood

2、correlationisfoundovertherelevantoperatingconditions.Acompari-sonoftheperformanceofunidirectionalandbi-directionalpartial-LSTbearingswiththatofabaseline,untexturedbearingispresentedshowingthebenefitsofLSTintermsofincreasedclearanceandreducedfriction.K

3、EYWORDS:fluidfilmbearings,sliderbearings,surfacetexturing1.IntroductionTheclassicaltheoryofhydrodynamiclubricationyieldslinear(Couette)velocitydistributionwithzeropressuregradientsbetweensmoothparallelsurfacesundersteady-statesliding.Thisresultsinanuns

4、tablehydrodynamicfilmthatwouldcollapseunderanyexternalforceactingnormaltothesurfaces.However,experienceshowsthatstablelubricatingfilmscandevelopbetweenparallelslidingsurfaces,generallybecauseofsomemechanismthatrelaxesoneormoreoftheassumptionsoftheclass

5、icaltheory.Astablefluidfilmwithsufficientload-carryingcapacityinparallelslidingsurfacescanbeobtained,forexample,withmacroormicrosurfacestructureofdifferenttypes.Theseincludewaviness[1]andprotrudingmicroasperities[2–4].Agoodliteraturereviewonthesubjectcanb

6、efoundinRef.[5].Morerecently,lasersurfacetexturing(LST)[6–8],aswellasinletrougheningbylongitudinalortransversegrooves[9]weresuggestedtoprovideloadcapacityinparallelsliding.TheinletroughnessconceptofTonder[9]isbasedon‘‘effectiveclearance’’reductioninth

7、eslidingdirectionandinthisrespectitisidenticaltothepar-tial-LSTconceptdescribedinref.[10]forgeneratinghydrostaticeffectinhigh-pressuremechanicalseals.VeryrecentlyWangetal.[11]demonstratedexperimentallyadoubling参考资料word文档整理分享oftheload-carryingcapacityf

8、orthesurface-texturedesignbyreactiveionetchingofSiCparallel-thrustbearingsslidinginwater.Thesesimpleparallelthrustbearingsareusuallyfoundinseal-lesspumpswherethepumpedfluidisusedasthelubricantforthebearings.Duetotheparallelslidingtheirperformanceispoo