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外文翻译--注塑模CAE技术.doc

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外文翻译--注塑模CAE技术.doc

1INJECTIONMOLDINGCAETECHNOLOGY0INTRODUCTIONPLASTICPRODUCTSFROMPRODUCTDESIGNTOPRODUCTION,INCLUDINGMOLDINGPLASTICPRODUCTSDESIGN,MOLDDESIGN,MOLDMANUFACTURINGANDINJECTIONMOLDINGPROCESSPARAMETERSANDSEVERALOTHERMAINAREASTHETRADITIONALINJECTIONMOLDDESIGNMAINLYRELYONTHEDESIGNERSEXPERIENCE,WHILETHEINJECTIONMOLDINGPROCESSISVERYCOMPLEX,PLASTICMELTFLOWPROPERTIESOFDIFFERENTANDEVERCHANGINGPRODUCTSANDDIESTRUCTURE,PROCESSCONDITIONSVARY,FORMINGVARIOUSDEFECTS,MOLDDESIGNOFTENREQUIREREPEATEDTRIALMODE,MAINTENANCEMODECANBEPUTINTOPRODUCTION,WITHLITTLEOFASUCCESSFUL,IDENTIFYPROBLEMS,NOTONLYTOREADJUSTTHEPROCESSPARAMETERS,OREVENTOMODIFYTHEPLASTICPRODUCTSANDMOLDS,NOTONLYTIMECONSUMINGANDLABORIOUS,BUTALSOREDUCESPRODUCTDEVELOPMENTTIMETHEUSEOFINJECTIONMOLDINGCAETECHNOLOGYINMOLDMANUFACTURINGPRIORTOSIMULATEINJECTIONMOLDINGPROCESSINCLUDINGFILLING,PACKINGANDCOOLINGANDTHEEARLYDETECTIONOFPROBLEMS,OPTIMIZEMOLDDESIGNANDPROCESSCONDITIONSSETTOREDUCETHENUMBEROFTESTMODEINORDERTOIMPROVEPRODUCTIONEFFICIENCY,HASBECOMEAINJECTIONMOLDINGTECHNOLOGYISANIMPORTANTDIRECTIONOFDEVELOPMENT1THEHISTORYOFINJECTIONMOLDINGCAETECHNOLOGYINJECTIONMOLDINGCAETECHNOLOGYISBASEDONPLASTICSPROCESSINGRHEOLOGYANDHEATTRANSFEROFTHEBASICTHEORY,THEMELTINTHEMOLDCAVITYINTHEFLOW,HEATTRANSFERPHYSICS,MATHEMATICALMODEL,USINGNUMERICALSOLUTIONMETHODOFCONSTRUCTINGTHETHEORY,THEUSEOFCOMPUTERVISUALIZATIONTECHNOLOGYIMAGE,VISUALLYSIMULATETHEDYNAMICSOFTHEACTUALSHAPEOFTHEMELTFILLINGANDCOOLINGPROCESS,ANANALYSISTECHNIQUESTHE20THCENTURY,60YEARS,THEUNITEDKINGDOM,THEUNITEDSTATESANDCANADAANDOTHERCOUNTRIESOFTHESCHOLARS,SUCHASJRPEARSONUNITEDKINGDOM,JFSTEVENSONAMERICA,MRKAMALCANADAANDKKWANGAMERICA,ETCTOCARRYOUTASERIESOF2PLASTICMELTINTHEMOLDTYPECAVITYFLOWANDCOOLINGOFBASICRESEARCHATAREASONABLESIMPLIFICATION,BASEDON60YEARSCOMPLETEDAONEDIMENSIONALFLOWANDCOOLINGANALYSISPROGRAMS,70YEARSTOCOMPLETETHETWODIMENSIONALCOOLINGANALYSISPROGRAMS,AND80YEARSFROMTHEINJECTIONMOLDINGCAETECHNOLOGYHASBEGUNTOTHEORETICALRESEARCHINTOTHEPRACTICALPHASE,LAUNCHEDATHREEDIMENSIONALFLOWANDCOOLINGANALYSISANDTHESTUDYEXTENDEDTOPACKING,FIBERORIENTATIONANDWARPAGEPREDICTIONOFMOLECULARANDOTHERFIELDSAFTER90YEARSCARRIEDOUTINTOTHEFLOW,PACKING,COOLINGANDSTRESSANALYSIS,THEWHOLEPROCESSOFINJECTIONMOLDINGPROCESSESAREINTEGRATEDRESEARCHCAETECHNOLOGIES,FORTHEINJECTIONMOLDDESIGNPROVIDESARELIABLEGUARANTEETHATITSAPPLICATIONISMOLDDESIGNINTHEHISTORYOFAMAJORCHANGE2THEROLEOFINJECTIONMOLDINGCAETECHNOLOGYUSINGTRADITIONALMETHODSOFDESIGNOFINJECTIONMOLDDESIGNSUCCESSWILLRELYHEAVILYONTHEEXPERIENCEOFDESIGNERS,BUTALSOFORCOMPLEXPARTSGATEPOSITIONISREASONABLEORNOT,THELOCATIONOFTHEEXHAUSTSLOTSETTINGS,TODETERMINETHELOCATIONOFWELDLINESANDSOVERYDIFFICULTDIEINDELIVERYWILLNORMALLYTAKEBEFORETHETESTMODEAFTERREPEATEDCHANGES,UNTILTHEPRODUCTSHAVEBEENQUALIFIED,WHICHINEVITABLYLEDTOTHEEXTENSIONOFTHEPRODUCTIONCYCLE,ANDGENERALLYDIFFICULTTOOBTAINANOPTIMALDESIGNANDPROCESSPARAMETERSTHEUSEOFINJECTIONMOLDINGCAETECHNICALDESIGN,MOLDISNOTTRUE,BECAUSEOFMOLDDESIGNCONCEPTSTAGE,CANMAKEUSEOFCAETECHNOLOGYININJECTIONMOLDINGPROCESSSIMULATIONFLOW,MAKINGUSUALLYONLYINTHEMOLDTRYOUTPHASESINORDERTOFINDPROBLEMS,SUCHASSHORTSHOTS,WELDLINESORHOLESAPPEARINTHESURFACEAPPEARANCEOFPARTSANDOTHERISSUESHAVEBEENAVOIDEDWHILEHELPINGTHEDESIGNERTOCOMPLETETHEBALANCEOFTHESYSTEM,SUCHASFLOWCHANNELDESIGN,EXHAUSTDUCTS,SETTING,RATIONALLYDETERMINETHEINJECTIONMOLDINGPROCESSPARAMETERS,ETC,SOTHATUSUALLYMAKESTHEMODIFICATIONMUSTBEREPEATEDTRYOUTTODETERMINESTRUCTURALPARAMETERSOFTHEMOLDDIEDESIGNANDPROCESSPARAMETERSINTHECONCEPTUALSTAGEABLETODETERMINE,REDUCETHEMOLDDESIGNANDMANUFACTURINGCYCLEANDIMPROVETHEMOLDDESIGNQUALITY3THEREFORE,THEROLEOFINJECTIONMOLDINGCAESOFTWARE,MAINLYASFOLLOWS1OPTIMIZEDESIGNOFPLASTICPRODUCTSPLASTICWALLTHICKNESS,GATENUMBERANDLOCATIONOFTHEDESIGNOFFLOWCHANNELSYSTEMFORTHEQUALITYOFPLASTICPRODUCTSHAVEASIGNIFICANTIMPACTDEPENDSONTHEEXPERIENCEOFTHEPAST,DESIGNERSUSINGMANUALMETHODSTOACHIEVE,TIMECONSUMINGEFFORT,BUTTHEUSEOFCAETECHNOLOGYTOQUICKLYDESIGNTHEBESTPRODUCTS2OPTIMIZETHEPLASTICMOLDDESIGNCANBECAVITYSIZE,GATELOCATIONANDNUMBEROFFLOWCHANNELDIMENSIONSANDCOOLINGSYSTEMSTOOPTIMIZETHEDESIGNONTHECOMPUTERSIMULATIONTESTMOLD,MOLDREPAIRMOLDANDIMPROVEQUALITYANDREDUCETHENUMBEROFACTUALTRYOUT3TOOPTIMIZEINJECTIONPROCESSPARAMETERSSIMULATIONOFTHEINJECTIONPROCESSANDFOUNDPOSSIBLESHAPEDEFECTS,TODETERMINETHEBESTINJECTIONPRESSURE,CLAMPINGFORCE,MOLDTEMPERATURE,MELTTEMPERATURE,INJECTIONTIMEANDCOOLINGTIMETHISSHOWSTHATTHEINJECTIONMOLDINGCAETECHNOLOGYINTERMSOFIMPROVINGPRODUCTIVITY,REDUCEMOLDDESIGNANDMANUFACTURECYCLEANDTOENSUREPRODUCTQUALITY,ORREDUCECOSTS,REDUCELABORINTENSITYANDSOON,HAVEVERYSIGNIFICANTTECHNICALADVANTAGESANDECONOMICSIGNIFICANCE3INJECTIONMOLDINGCAESOFTWARETYPESANDTHEIRDETAILSTODATE,AMATUREBUSINESSAREMOREINJECTIONMOLDINGCAESOFTWARE,MOLDFLOWCORPORATIONMOLDFLOWSOFTWAREANDACTECH,INCFEBRUARY2000,WASMOLDFLOWMERGERANDCMOLDSOFTWAREISANEXCELLENTREPRESENTATIVE;THEREAREALSOFOREIGNTHETMCONCEPT,CADMOLD,FIDAP,STIRM100,POLYFLOWANDCHINASTAIWANREGIONMOLDEXPEERSOFTWAREAPPLICATIONSARERELATIVELYWIDE;ANDDOMESTICINTHEEIGHTHFIVEYEARPERIODBEGANRESEARCHINTHISAREA,ANDNOWHUAZHONGUNIVERSITYOFTECHNOLOGYHSCAESOFTWAREANDZHENGZHOUUNIVERSITY,ZMOLDSOFTWAREINCHINAINTHELEADINGPOSITIONMOLDFLOWSOFTWAREISSPECIALIZEDININJECTIONMOLDINGCAESOFTWAREANDCONSULTING4FORMOLDFLOWSRANGEOFPRODUCTS,THECOMPANYISSUEDSINCE1976,THEWORLDSFIRSTSETOFINJECTIONMOLDINGCAESOFTWARE,HASBEENALEADINGINJECTIONMOLDINGCAESOFTWAREMARKETTO2004,MOLDFLOWINJECTIONMOLDINGCAESOFTWAREINTHEGLOBALMARKETSHAREOFOVER75MOLDFLOWSOFTWAREINCLUDESTHREEPARTSMOLDFLOWPLASTICSADVISERSPRODUCTOPTIMIZATIONCONSULTANT,MPA,MOLDFLOWPLASTICSINSISHTINJECTIONMOLDINGSIMULATIONANALYSIS,MPI,ANDMOLDFLOWPLASTICSXPERTINJECTIONMOLDINGPROCESSCONTROLSPECIALISTS,MPXUNDERNORMALCIRCUMSTANCES,THEMOSTCOMMONLYUSEDMPI,ISMAINLYUSEDFORINJECTIONMOLDINGPROCESSSIMULATIONTOGETTHEBESTNUMBERANDLOCATIONOFTHEGATE,REASONABLEFLOWCHANNELSYSTEMANDCOOLINGSYSTEM,ANDCAVITYSIZE,GATESIZE,RUNNERSIZEANDCOOLINGSYSTEMSTOOPTIMIZETHESIZEANDTHEINJECTIONMOLDINGPROCESSPARAMETERSMAYALSOBEOPTIMIZEDMOLDFLOWSOFTWAREMOLDFLOWANALYSISTECHNIQUESCANBEDIVIDEDINTOTHREEKINDS,NAMELY,MIDPLANE,FUSIONAND3D4MOLDFLOWANALYSISOFMIDPLANEMIDPLANEINTHESURFACEFLOWAPPLICATIONSBEGANINTHE20THCENTURY,THE80STHEGRIDISATHREENODETRIANGULARELEMENT,ITSPRINCIPLEISTHE3DGEOMETRICMODELOFSIMPLIFIEDGEOMETRICMODELOFTHENEUTRALSURFACETOBECREATEDINTHEMODELGRIDTHEMIDDLEOFTHEWALLTHICKNESS,USINGESTABLISHEDSIMULATIONANALYSISOFTHENEUTRALSURFACE,IETOFLOWINPLANETOSIMULATETHREEDIMENSIONALSOLIDFLOWTHEANALYSISOFTECHNOLOGICALDEVELOPMENTHASBEENVERYMATUREANDSTABLE,ANDTHEADVANTAGESFORTHEANALYSISOFSPEEDANDHIGHEFFICIENCYBASEDONTHEFLOWOFSURFACEFLOWSIMULATIONOFINJECTIONMOLDINGTECHNOLOGY,SOFTWAREAPPLICATIONS,THELONGEST,WIDESTRANGEBUTTHEPRACTICESHOWSTHAT,BASEDONTHESURFACEFLOWSIMULATIONSOFTWAREINTHEAPPLICATIONOFTECHNOLOGYTHATHASSIGNIFICANTLIMITATIONS,SPECIFICALLYASFOLLOWS1THEUSERMUSTCONSTRUCTAMIDSURFACEMODELUSINGMANUALDIRECTLYFROMTHEPHYSICALMODELSTRUCTUREINTHESURFACEMODELISVERYDIFFICULTANDOFTENTAKESALOTOF

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