qformextrsuion挤压模具优化设计

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1、PRACTICALIMPLEMENTATIONOFNUMERICALMODELINGTOOPTIMIZATIONOFEXTRUSIONDIEDESIGNFORPRODUCTIONOFCOMPLEXSHAPEPROFILESI0.11S.Stebunov,N.Biba,A.Lishny,HanlongLiirl}QuantorFonnLtd.,Moscow,Russia2)MICASSimulationsLtd.,UK3)lUlTyBeijing,ChinaAbstractThepaperpresentstheexper

2、ienceofaluminiumprofileextrusionsimulationusingQForm-Extrusionprogram・Duetonon-uniformmaterialflowtheprofilethatleavestheorificemaybend,twistorbuckle.Thegoalofthesimulationistopredictthisundesirableshapedeteriorationandtofindwaystominimizeit.Theprogramhasspecial

3、interfaceforfastestdiegeometryimport.TheprogramautomaticallyfindsbearingzonesandconvertsthemintoparametricformallowingmodificationofbearingdesignwithoutreturntooriginalCADmodel.Alterationsandoptimizationcanbedonebyusingaspecialmodule"BearingEditor".Inturnwithsim

4、ulationstheusercanmodifydiedesigntoachievethemostuniformdistributionoflongitudinalvelocity.Thesimulationalsoprovidescomprehensiveanalysisofthetoolstressesanddeflectiontakingintoaccountsallthecomponentsofthetoolassembly.Coupledmechanicalsimulationmodeallowstoanal

5、ysetheinfluenceofthediedeflectiononthematerialflowandtocompensatethiseffect.Totakeintoconsiderationthegradientofthetemperatureacrossthedieandmandrelduringtheentireprocesscycleatransientcoupledthermo-mechanicalmodelhasbeenbuiltonthebasisofQForm-Extrusionprogram・T

6、hesoftwareisinuseatmanydiemakingandextrusioncompaniesshowingitshigheconomicefficiency・Keywords:Extrusion,aluminum,profiles,dies,FEM,simulation.IntroductionQForm-Extrusionisaspecial-purposeprogramforaluminiumprofileextrusionsimulationthathasbeendevelopedbyQuantor

7、FormLtd.ItsharespostprocessorwiththeversatilemetalformingsimulationprogramQForm3Dbutisactuallyastand-aloneapplication.TheextrusionmodelisbasedonLagrange-Eulerapproach[1].Themodelalsoincludestheassumptionthatthetoolsetiscompletelyfilledwiththematerialpriortothebe

8、ginningofthesimulationthusthesolutionistobefoundinthedomainthatisinsideofthetoolingset.Ontheotherhandthefreeendoftheprofileincreasesinlengthveryquicklyafterpassingthr