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外文翻译--可靠性仿真与优化设计机械维修 英文版.pdf

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外文翻译--可靠性仿真与优化设计机械维修 英文版.pdf

CHINESEJOURNALOFMECHANICALENGINEERINGVOL22,ANO4,A2009594DOI103901/CJME200904594,AVAILABLEONLINEATWWWCJMENETCOM;WWWCJMENETCOMCNRELIABILITYSIMULATIONANDDESIGNOPTIMIZATIONFORMECHANICALMAINTENANCELIUDESHUN,HUANGLIANGPEI,YUEWENHUI,ANDXUXIAOYANHUNANPROVINCIALKEYLABORATORYOFHEALTHMAINTENANCEFORMECHANICALEQUIPMENTHUNANUNIVERSITYOFSCIENCEANDTECHNOLOGY,XIANGTAN411201,CHINARECEIVEDSEPTEMBER8,2008;REVISEDAPRIL16,2009;ACCEPTEDAPRIL30,2009;PUBLISHEDELECTRONICALLYMAY5,2009ABSTRACTRELIABILITYMODELOFAMECHANICALPRODUCTSYSTEMWILLBENEWLYRECONSTRUCTEDANDMAINTENANCECOSTWILLINCREASEBECAUSEFAILEDPARTSCANBEREPLACEDWITHNEWCOMPONENTSDURINGSERVICE,WHICHSHOULDBEACCOUNTEDFORINSYSTEMDESIGNINTHISPAPER,ARELIABILITYMODELANDRELIABILITYBASEDDESIGNOPTIMIZATIONMETHODOLOGYFORMAINTENANCEAREPRESENTEDFIRST,BASEDONTHETIMETOFAILUREDENSITYFUNCTIONOFTHEPARTOFTHESYSTEM,THEAGEDISTRIBUTIONSOFALLPARTSOFTHESYSTEMDURINGSERVICEAREINVESTIGATED,ARELIABILITYMODELOFTHEMECHANICALSYSTEMFORMAINTENANCEISDEVELOPEDTHEN,RELIABILITYSIMULATIONSOFTHESYSTEMSWITHWEIBULLPROBABILITYDENSITYFUNCTIONSAREPERFORMED,THESYSTEMMINIMUMRELIABILITYANDSTEADYRELIABILITYFORMAINTENANCEAREDEFINEDBASEDONRELIABILITYSIMULATIONDURINGTHELIFECYCLEOFTHESYSTEMTHIRDLY,AMAINTENANCECOSTMODELISDEVELOPEDBASEDONREPLACEMENTRATESOFTHEPARTS,ARELIABILITYBASEDDESIGNOPTIMIZATIONMODELFORMAINTENANCEISPRESENTED,INWHICHTOTALLIFECYCLECOSTISCONSIDEREDASDESIGNOBJECTIVEANDSYSTEMRELIABILITYASDESIGNCONSTRAINFINALLY,THERELIABILITYBASEDDESIGNOPTIMIZATIONMETHODOLOGYFORMAINTENANCEISUSEDTODESIGNOFALINKRINGFORTHECHAINCONVEYOR,WHICHSHOWSTHATOPTIMALDESIGNWITHTHELOWESTMAINTENANCECOSTCANBEOBTAINED,ANDMINIMUMRELIABILITYANDSTEADYRELIABILITYOFTHESYSTEMCANSATISFYREQUIREMENTOFSYSTEMRELIABILITYDURINGSERVICEOFTHECHAINCONVEYORKEYWORDSMAINTENANCE,RELIABILITY,SIMULATION,DESIGNOPTIMIZATION1INTRODUCTION∗DURINGTHELIFECYCLEOFAMECHANICALPRODUCT,MAINTENANCE,WHICHISIMPLEMENTEDONTHEJUDGMENTOFPRACTICALSTATES,PRESERVATIONANDRECONSTRUCTIONOFSOMECERTAINSTATESFORTHEPRODUCT,ISVERYIMPORTANTTOKEEPTHEPRODUCTAVAILABLEANDPROLONGITSLIFESTUDIESONMAINTENANCEFORMECHANICALPRODUCTSAREROUGHLYCLASSIFIEDINTOTHEFOLLOWINGTHREECATALOGS1HOWTOFORMULATEMAINTENANCEPOLICYORANDHOWTOOPTIMIZEMAINTENANCEPERIODSCONSIDERINGSYSTEMRELIABILITYANDMAINTENANCECOST,EG,WHENSYSTEMRELIABILITYISSUBJECTEDTOSOMECERTAINCONDITIONS,MAINTENANCEPOLICYANDOPTIMALMAINTENANCEINTERVALAREDETERMINEDTOMAKEMAINTENANCECOSTLOWEST1−42TODEVELOPMAINTENANCEMETHODSANDTOOLSTOENSURESYSTEMMAINTENANCETOBOTHLOWCOSTANDSHORTREPAIRTIME,SUCHASSPECIALMAINTENANCETOOLBOXESDEVELOPED5−93TODESIGNFORMAINTENANCEDFM,NAMELYDURINGDESIGNPROCEDURE,SYSTEMMAINTAINABILITYISEVALUATEDANDCORRESPONDINGAUTHOREMAILLIUDESHUNHNUSTEDUCNTHISPROJECTISSUPPORTEDBYNATIONALBASICRESEARCHPROGRAMOFCHINA973PROGRAM,GRANTNO2003CB317001,SCIENTIFICRESEARCHFUNDOFHUNANPROVINCIALEDUCATIONDEPARTMENTOFCHINAGRANTNO07A018,HUNANPROVINCIALNATURALSCIENCEFOUNDATIONOFCHINAGRANTNO07JJ5074,ANDNATIONALNATURALSCIENCEFOUNDATIONOFCHINAGRANTNO50875082ISIMPROVED10−14MAINTENANCESTARTSATDESIGNOBVIOUSLY,DESIGNMETHODOLOGYFORMAINTENANCE,WHICHISONEOFBESTEFFECTIVEMAINTENANCEMEANSINTHELIFECYCLEOFAPRODUCT,ATTRACTSMANYRESEARCHERS’INTERESTSHOWEVER,RESEARCHONDESIGNFORMAINTENANCEISMAINLYCENTRALIZEDONTWOFIELDSONEISMAINTAINABILITYEVALUATIONONPRODUCTDESIGNALTERNATIVES,THEOTHERISSOMEPECULIARSTRUCTURESOFPARTSDESIGNEDFORCONVENIENTMAINTENANCEFOREXAMPLE,COMPUTERAIDEDMAINTAINABILITYEVALUATIONTOOLSFORPRODUCTDESIGN11,PRODUCTASSEMBLYANDDISASSEMBLYSIMULATIONPROGRAMSFORMAINTENANCE12,AIRPLANEDESIGNFORMAINTENANCE13,ANDSOONBUTSTUDIESONDESIGNMETHODOLOGIESCONSIDERINGPRODUCTRELIABILITY,MAINTENANCECOSTANDMAINTENANCEPOLICYARESELDOMREPORTEDSHUANDFLOWERONCEPOINTEDOUTTHATRECKONINGINLABORCOSTANDPRODUCTIONINTERVALCOST,DESIGNDECISIONOFALTERNATIVESOFTHEPARTWOULDBEINFLUENCEDHOWEVER,SUBSEQUENTRESEARCHREPORTSHAVENOTBEENPRESENTED15INTHISPAPER,BASEDONTHETIMETOFAILUREDENSITYFUNCTIONOFTHEPART,DISTRIBUTIONSOFSERVICEAGEOFPARTSFORAMECHANICALSYSTEMTHATUNDERGOESMAINTENANCEAREINVESTIGATEDTHENTHERELIABILITYMODELOFTHEMECHANICALSYSTEMISRECONSTRUCTEDANDSIMULATEDFINALLY,ANOVELDESIGNOPTIMIZATIONMETHODOLOGYFORMAINTENANCEISDEVELOPEDANDILLUSTRATEDBYMEANSOFDESIGNOFALINKRINGFORTHECHAINCONVEYORCHINESEJOURNALOFMECHANICALENGINEERING5952RECONSTRUCTIONOFRELIABILITYMODELOFMECHANICALSYSTEMFORMAINTENANCE21MODELASSUMPTIONSAFTERAMECHANICALSYSTEMRUNSSOMETIME,DUETOREPLACEMENTOFFAILPARTS,PRIMARYRELIABILITYMODELISINAPPLICABLETOCHANGEDSYSTEM,THUSTHERELIABILITYMODELSHOULDBERECONSTRUCTEDTHEMECHANICALSYSTEMDISCUSSEDINTHISPAPERHASFOLLOWINGCHARACTERISTICS1SYSTEMCONSISTSOFALARGENUMBEROFSAMETYPEPARTS,INWHICHTHENUMBEROFPARTSISCONSTANTDURINGTHEWHOLELIFECYCLEOFTHESYSTEM2THETIMETOFAILUREDENSITYDISTRIBUTIONFUNCTIONSOFALLPARTSARETHESAME,ALSO,REPLACEMENTPARTSHAVETHESAMEFAILUREDISTRIBUTIONFUNCTIONSASTHEORIGINALPARTS3FAILUREOFEACHPARTISARANDOMINDEPENDENTEVENT,IE,FAILUREOFONEPARTDOESNOTAFFECTFAILUREOFOTHERPARTSINTHESYSTEMFOREXAMPLE,ACHAINCONVEYORWIDELYUSEDINMANYINDUSTRIESCONSISTSOFALARGENUMBEROFSAMEROUNDRINGS,SAMELINKSHEETSANDSAMESCRAPEBOARDSTHEIRRESPECTIVENUMBERSARECONSTANTAFTE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