快速成型与虚拟成型在产品设计和制造中的应用毕业课程设计外文文献翻译、中英文翻译、外文翻译

RAPIDPROTOTYPINGVERSUSVIRTUALPROTOTYPINGINPRODUCTDESIGNANDMANUFACTURINGCKCHUA1,SHTEH1ANDRKLGAY2SCHOOLOFMECHANICALAND2GINTICINSTITUTEOFMANUFACTURINGTECHNOLOGY,NANYANGTECHNOLOGICALUNIVERSITY,SINGAPOREABSTRACTRAPIDPROTOTYPINGRPISTHEPRODUCTIONOFAPHYSICALMODELFROMACOMPUTERMODELWITHOUTTHENEEDFORANYJIGORFIXTUREORNUMERICALLYCONTROLLEDNCPROGRAMMINGTHISTECHNOLOGYHASALSOBEENREFERREDTOASLAYERMANUFACTURING,MATERIALDEPOSITMANUFACTURING,MATERIALADDITIONMANUFACTURING,SOLIDFREEFORMMANUFACTURINGANDTHREEDIMENSIONALPRINTINGINTHELASTDECADE,ANUMBEROFRPTECHNIQUESHASBEENDEVELOPEDTHESETECHNIQUESUSEDIFFERENTAPPROACHESORMATERIALSINPRODUCINGPROTOTYPESANDTHEYGIVEVARYINGSHRINKAGE,SURFACEFINISHANDACCURACYVIRTUALPROTOTYPINGVPISTHEANALYSISANDSIMULATIONCARRIEDOUTONAFULLYDEVELOPEDCOMPUTERMODEL,THEREFOREPERFORMINGTHESAMETESTSASTHOSEONTHEPHYSICALPROTOTYPESITISALSOSOMETIMESREFERREDTOASCOMPUTERAIDEDENGINEERINGCAEORENGINEERINGANALYSISSIMULATIONTHISPAPERDESCRIBESACOMPARATIVESTUDYOFTHETWOPROTOTYPINGTECHNOLOGIESWITHRESPECTTOTHEIRRELEVANCEINPRODUCTDESIGNANDMANUFACTURETHESTUDYINVESTIGATESTHESUITABILITYANDEFFECTIVENESSOFBOTHTECHNOLOGIESINTHEVARIOUSASPECTSOFPROTOTYPING,WHICHISPARTANDPARCELOFANOVERALLDESIGNANDMANUFACTURINGCYCLEKEYWORDSPRODUCTDESIGNRAPIDPROTOTYPINGVIRTUALPROTOTYPING1INTRODUCTIONRAPIDPROTOTYPINGRPISEMERGINGASAKEYPROTOTYPINGTECHNOLOGYWITHITSABILITYTOPRODUCEEVENCOMPLICATEDPARTSVIRTUALLYOVERNIGHTITENABLESPRODUCTDESIGNERSTOSHORTENTHEPRODUCTDESIGNANDDEVELOPMENTPROCESSTHECOMINGOFAGEOFTHISTECHNOLOGYISCLEARLYREFLECTEDINTHEINCLUSIONOFASTEREOLITHOGRAPHYSTLFILEGENERATORINMOST,IFNOTALL,CADSYSTEMSTODAYTHESTLFILEISTHEDEFACTOSTANDARDUSEDBYRPSYSTEMSINTHEREPRESENTATIONOFTHESOLID3DCADMODELSWHILERPISARELATIVELYYOUNGTECHNOLOGY,VIRTUALPROTOTYPINGVPHASBEENINSTEADYDEVELOPMENTSINCETHE1970SINMANYGUISESVIRTUALPROTOTYPINGISTAKENTOMEANTHETESTINGANDANALYSISOF3DSOLIDMODELSONCOMPUTINGPLATFORMSTODAY,VPISOFTENTIGHTLYINTEGRATEDWITHCAD/CAMSOFTWAREANDSOMETIMESREFERREDTOASCAEPACKAGESITPROVIDESTHEABILITYTOTESTPARTBEHAVIOURINASIMULATEDCONTEXTWITHOUTTHENEEDTOMANUFACTURETHEPARTFIRST12DEFINITIONSOFRPANDVPRAPIDPROTOTYPINGRPISAWIDELYUSEDTERMINENGINEERING,PARTICULARLYINTHECOMPUTERSOFTWAREINDUSTRYWHEREITWASFIRSTCOINEDTODESCRIBERAPIDSOFTWAREDEVELOPMENTTHISTERMHASALSOBEENADOPTEDBYTHEMANUFACTURINGINDUSTRYTOCHARACTERISETHECONSTRUCTIONOFPHYSICALPROTOTYPESFROMASOLID,POWDER,ORLIQUIDINASHORTPERIODOFTIMEWHENCOMPAREDTO“TRADITIONAL”SUBTRACTIVEMACHININGMETHODSTHISTECHNOLOGYHASALSOBEENVARIOUSLYREFERREDTOASLAYERMANUFACTURING,MATERIALDEPOSITMANUFACTURING,MATERIALADDITIONMANUFACTURING,SOLIDFREEFORMMANUFACTURINGANDTHREEDIMENSIONALPRINTING2VIRTUALPROTOTYPINGVPREFERSTOTHECREATIONOFAMODELINTHECOMPUTER,OFTENREFERREDTOASCAD/CAM/CAEVIRTUALORCOMPUTATIONALPROTOTYPINGISGENERALLYUNDERSTOODTOBETHECONSTRUCTIONMODELSOFPRODUCTSFORTHEPURPOSEOFREALISTICGRAPHICALSIMULATION1INTHISPAPER,VPWILLREFERTOTHESIMULATION,VIRTUALREALITYANDMANUFACTURINGPROCESSDESIGNDOMAINS3NEVERTHELESS,THEREAREMANYAREASWHERETHEDISTINCTIONBETWEENRPANDVPISBLURREDASRPSYSTEMSRELYONCADSYSTEMSTOGENERATETHEFILESNEEDEDTOPRODUCETHEPROTOTYPE,ITWOULDSEEMTHATRPISADOWNSTREAMPROCESSFROMVPINTHEPRODUCTORPARTDEVELOPMENTCYCLEINDEED,PRATTSDEFINITIONOFVPREVEALSTHEFACTTHATVPISATERMWHICHISLOOSELYUSEDINTHEPROTOTYPINGCOMMUNITYASSUCH,ITWOULDBEAPPROPRIATETOCLEARLYDEFINEBOTHRPANDVPRAPIDPROTOTYPINGWILLBETAKENTOMEAN,ASABOVE,THEPRODUCTIONOFAPHYSICALMODELFROMACOMPUTERMODELWITHOUTTHENEEDOFANYJIGORFIXTUREORNCPROGRAMMINGTHISALSOINCLUDESOTHERRELATEDPROCESSESANDAPPLICATIONSWHICHUSERPPRODUCEDOBJECTS,SUCHASRAPIDTOOLINGSIMILARLY,VPISDEFINEDASTHESUBSEQUENTMANIPULATIONOFASOLIDCADMODELASASUBSTITUTEFORAPHYSICALPROTOTYPEFORTHEPURPOSESOFSIMULATIONANDANALYSIS,ANDISNOTINCLUSIVEOFTHECONSTRUCTIONOFTHESOLID3DMODELVPINCLUDESTHEFOLLOWINGFUNCTIONS1FINITEELEMENTANALYSIS2MECHANICALFORM,FITANDINTERFERENCECHECKING3MECHANICALSIMULATION4VIRTUALREALITYAPPLICATIONS5COSMETICMODELLING6ASSEMBLABILITYTHERELATIONSHIPSBETWEENRPANDVPARESHOWNINFIG1FIG1CLASSIFICATIONOFRPANDVP3PROTOTYPINGINSINGAPORETWOSELECTEDMULTINATIONALCOMPANIESONEAMERICANANDONEFRENCHBASEDINSINGAPOREWITHSIGNIFICANTPRODUCTDEVELOPMENTACTIVITIESSHOWEDDIFFERINGAPPROACHESTOBOTHRPANDVPBOTHUSERPINTHEIRPROTOTYPINGACTIVITIESTHEFIRSTCOMPANY,B,PLACEDMOREEMPHASISONVIRTUALPROTOTYPINGITMANUFACTURESTELECOMMUNICATIONSEQUIPMENTSUCHASPAGERSANDHANDPHONESITISMOVINGALLPROTOTYPINGAPPLICATIONSUPSTREAM,WHICHISTOMOVEPROTOTYPINGFROMRPTOVPATPRESENT,THEIRRPMODELSAREUSEDONLYFORPROOFOFCONCEPTANDMARKETINGPURPOSESOTHERPROTOTYPINGACTIVITIESAREBEINGCARRIEDOUTWITHVPTHESECONDCOMPANY,C,MANUFACTURESCONSUMERELECTRONICSPRODUCTSSUCHASTELEVISIONSETS,VIDEOCASSETTERECORDERSANDTELEPHONESITUSESVPONLYASATOOLTOCREATEASOLID3DMODELFROMTHESOLID3DMODEL,CGENERATESTHESTLFILENEEDEDTOPRODUCETHERPPROTOTYPECOMPANYCTHENUSESTHERPPARTASAMASTERFORSILICONERUBBERMOULDSTOPRODUCEALIMITEDNUMBEROFPHYSICALABSPOLYACRYLONITRITEBUTADIENESTYRENEPROTOTYPESFORTHEVARIOUSPROTOTYPINGTESTSANDSIMULATIONCOMPANYBINTENDSTOMOVEMOREPROTOTYPINGTOVP,RATHERTHANUSINGPHYSICALMODELSVIRTUALPROTOTYPINGALLOWSFORIMPROVEMENTSINRELIABILITYAN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