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1、真實三維CAE模擬綱要￠簡介￠為何需要3DCAE模擬?￠3D流動模擬材料性質(zhì)￠數(shù)學(xué)模型與公式￠數(shù)值方法￠3D流動模擬特殊議題￠分析案例3DCAE模擬需求性TheUsefulnessofComputer-AidedEngineering(CAE)SimulationforInjectionMolding?Powerfulandcost-effectiveanalysistool(virtualmolding)?Insightfulinformationforpart,moldandprocessdesigns?Efficientsearchf
2、oroptimaldesignandprocessset-up?FacilitateconcurrentengineeringbyinvolvingallpartiesAsthecomputerperformanceandspeedincrease,CAEsimulationsbasedon3Dapproachwillbemorepopular.Cost-EffectiveAnalysisToolcostofchangemanufacturingprocesspartproductpartdesignmolddesignmanufactur
3、ingdeliveryThelaterintimeaproduct/moldneedstobereworked,thecostlierthatchangebecomes.InsightfulInformationusingCAEVelocityprofileTemperatureandpressuredistributionsSource:Moldflow設(shè)計與製程最適化Anintegratedcomputer-aidedengineering(CAE)optimizationtoolthatusesprocesssimulationpro
4、gramtointelligentlyidentifytheoptimaldesignandprocessingparametersComputerSimulationToolDesignandProcessingPredictions&ParametersObjectiveFunctionOptimizationScheme&ToolCAE融滲的同步工程ProductProductDesignDesignResinResinProductProductSupplierSupplierEngineeringEngineeringCAECAE
5、MoldDesignMoldDesignMoldingMoldingandToolingandTooling為何需要3DCAE模擬?Hele-Shaw流動模式的本質(zhì)限制●Creepingflows(lowReynoldsnumber)●Inertiaforceisnegligibleinpolymermelt●Velocityingap-wisedirectionisneglected●Heatconductioninflowdirectionisnegligible●Wallthickness<6、Difficultyinconstructingmid-planein3Dgeometry?導(dǎo)致射出成型3D效應(yīng)分析的限制3D效應(yīng)流動區(qū)域●Thicksections●Fountainflows●Suddenpartthicknesschange●Junctions(i.e.,ribs,bossesandcorners)●Insertsandspecialgeometries(i.e.,grills)●Microfeaturesandmicroparts3Deffectsintheinjectionmolding.(Source:Micha
7、eli,W.,etal.,Kunststoffe,87(1997),4.)三維厚件與複雜幾何Source:Moldflow流道系統(tǒng)的3D效應(yīng)Theflowimbalanceinthenaturallybalancedrunnersystem(PBT,Flowrate=100cc/s).Notethattheinnercavitiesonthespruesidesarefilledfaster.Source:Costa,F.S.,etal.,Moldflow慣性效應(yīng)Fillpatternsatagatewithflowratesof970cc
8、/s(Re?4.0)usingMPI/FLOW3DTM.Source:Costa,F.S.,etal.,Moldfloww/oinertiaeffectw/inertiaeffe
