Moldflow-MPI6.1原版教程——高级篇：冷却分析

MoldflowPlasticsInsight®Release6.1MPI/CoolTrainingMPI/CoolTrainingFORMPI6.1iiiiiCopyright©January2007MoldflowCorporation.AllRightsReserved.Allrightsreserved.Nopartofthismaybereproducedinanyformorbyanymeans,electronic,mechanicalphotocopyingorotherwise,withoutpriorwrittenpermissionofthecopyrightowner.PublishedbyMoldflowCorporation,Whileeveryefforthasbeenmadetoavoiderrorsinthetext,theauthorandpublishershallnotbeunderanylegalliabilityofanykindinrespectoforarisingoutoftheinformationcontainedherein.MOLDFLOW®,iMPA,MPA,MoldflowPlasticsAdvisers,theMPAlogo,MPI,MoldflowPlasticsInsight,theMPIlogo,MDL,MoldflowDesignLink,MPX,MoldflowPlasticsXpert,theMPXlogo,plasticszoneandShotscopeandregisteredtrademarksandEZ-Track,MoldflowManufacturingSolutionsandMMSaretrademarksofMoldflowCorporationand/oritssubsidiariesandaffiliatesworldwide.ivvAboutthismanualTheMPI/CoolmanualisdesignedforcurrentusersofMPI/Flow.Increatingthismanual,ourgoalwastointroduceyoutousesofMPI/Cool.Theinformationprovidedhereisnecessarytoproceedtowarpage.Thereisasignificantamountofinformationinthismanual,moreinformationthancanbeabsorbedduringtheclass.Thismanualshouldbeusefulasahandydeskreferencewhenbackintheoffice.UsingthismanualThismanualisseparatedintoseveralchaptersandappendices.Eachofthechapterscoversaspecifictopicandincludesthefollowingsections:AimDescribesthelearningobjectivesofthechapter.WhyDoItOutlinesthereasonsforfollowingtheprescribedguidance,suggestions,andmethodologywithinthechapter.OverviewAcompleteoutlineofwhatwillbecoveredwithinthechapter.TheoryandconceptsTheoryandconceptsdiscussesbackgroundinformationonthesubjectmatterofthechapter.Thisisdesignedtogivetheuserdetailedbackgroundinformationsothepracticesectioncanhavebettermeaning.ThismanualistobeusedinconjunctionwiththeSimulationFundamentalsPracticesmanual.Whatyou’velearnedAreviewofwhatwascoveredinthechapter.viPracticeThissectioncontainshands-onexercisesusedtoreinforcewhatwaslearned.Thepracticesectionguidestheuserthroughthestepsnecessarytocompleteaproject.FormattingusedinthismanualTasks:Toperformasteponthecomputer1.WhentheTaskiconisshown,belowitisalistofnumberedstepstocompletethetask.1.1.Taskscanhaveasub-step,•Abulletedlistprovidesinformationonastep,oranon-sequentialactionstobedone,hAsecondlevelbulletedlisttoprovideinformationonasub-step.2.Ataskisusedinthepracticesectionofachaptertoindicatestepstobedoneonthecomputer.Bulletedlists•Abulletedlistcontainsanumberofitemsthathavenoparticularorder.•Itdoesnotrepresentalistofstepsthathavetobefollowedinsequence.RuledparagraphTipNoteTextfromacomputerscreenisshownbetweenruledlines./Atipisausefulpieceofinformationthatisnormallyassociatedwithataskorprocedure.Somethingthatcanbedonetomakeataskeasierormoreefficient.3Anoteisgenerallyusedtohighlightsomebackgroundortheoreticalinformation.viiTrainingfilessetupThefilesrequiredfortheMPI/Coolclassareorganizedintoseveralfolders.Eachfolderhasthefilesnecessaryforonechapter.Thetablebelowshowstherequiredfolders,studyfiles,andresultsnecessaryfortheclass.Ineachfolder,therewillbea*.mpifilewiththesamenameasthefolder.ThempifileisthedatabaseoftheProjectpaneinSynergy.Alltheresultsthatneedtoberunwillbeprovidedinclass.Howeverifforsomereasontheresultsarenotavailable,theycanbeobtainedbyanalyzingthenecessarystudies.Table1:FilesRequiredfortheAdvancedSimulation:MPI/CoolClassFoldernameStudyFilesNeededResultsneededCooling_Analysis_Stratigiesdustpan_specified.sdyRadiatorTankSpecified.sdyRadiatorTankAutomatic.sdyNoneCoolCoolCooling_Optimization(emptyproject)Cooling_Results_Interpretationdustpan_cooling_interpretation.sdyRadiator_tank_interpretation.sdyCoolCoolModeling_Cooling_Compcap_wl_modeling.sdydustpan_wl_modeling.sdyRadiatorTankFusionInsert.sdyRadiatorTank.sdyviiiCoolingOverview1CHAPTER1CoolingOverviewAimTheaimofthischapteristoreviewthebasicconceptsofcoolinginjectionmolds.WhydoitWhendoingacoolinganalysisandcoolingoptimization,itisimportanttobefamiliarwiththeissuesinvolvedwithcooling.OverviewThischapterprovidesanoverviewofthebasicconceptsinvolvedincoolinginjectionmoldsincluding:•Whyoptimizecooling.•Cycletimedefinitions.•Heattransferininjectionmolds.•Coolants.•Coolinglines.2TheoryandConcepts-CoolingOverview3TheoryandConcepts-CoolingOverviewWhyoptimizecoolingTherearetwomajorreasonswhycoolingshouldbeoptimized.Thefirstispartqualityandthesecondiscycletime.Whenconsideringquality,severalpossibleissuesarise.Thefirstissurfacefinish.Themoldtemperaturecanaffecttheappearanceofthepart.Asmoldtemperaturechanges,sodoestheglosslevelofthepart.Ahighermoldtemperaturetendstoleadtoaglossierfinishonthepart.Forcertainapplications,thiscanbeamajorissue.Residualstressandthermalbendingareotherqualityissues.Asthemoldtemperaturegoesup,thecoolingrateslowsandmorestressisrelievedfromthepart,loweringthewarpage.Whenthetemperaturesoneithersideoftheplasticcross-sectionaredifferent,thiscanleadtothepartwarpingorbendingduetothenon-uniformshrinkageofthepart.Moldersareveryinterestedincycletime.Theywanttomakepartsasfastastheycantokeepproductioncostsdown.Wheninjectionmoldsareoptimizedfo