注塑成型工艺参数多目标优化设计

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1、AbstractInjectionmoldingisanefficientandeconomicmoldingtechnologyforplasticproducts．Therearemanynon-linearanduncertainfactorsbetweenmoldingprocessingconditionsandqualityofproducts，makestheprocessparametersoptimizationandqualitycontrolverydifficult．Traditionalmethodsofregulatingtheprocessingisn

2、otonlytime—consumingandhigh—cost，butalsooverlyexcessivelydependentonexperienceandpastcases，anditsaccuracyisnothigh，cannotmeettherequirementsofnewproducts’SexpressProduction．Althoughthenumericalsimulationcallreducethecostoftest，andthesimulationresultscanalsobeacceptabletomakeaguidancetotheadjus

3、tofprocessparameters，buttheguidanceislackofquantitativeprecision．Toobtaingoodresults，experience，andrepeatedtestsarestillnecessary．DesignofExperimentcanreducetheblindnessoftrialanderrortosomeextent，andobtionthegoodcombinationofprocessingvariableswithinthetestingscope．Becauseofthelimitedvaluesof

4、pervariablestudiedintheexperiments，itisdifficultachievetheglobaloptimizationofthemoldingprocessparameters．Accordingtotheexistingresearchmethods，theauthoranalyzestherheologicalbehaviorofpolymermeltflowandheattransfer,aswellasthermoplasticinjectionmoldingnumericalsimulationtheory,useintelligento

5、ptimizationtechnologyintotheinjectionmoldingprocessparametersoptimization，obtainedsamplesdatafromDOEnumericalsimulation，establishallneuralnetensemble，thenusethegeneticalgorithmandfuzzyweightedscoretooptimizethenetmodel，proposedmulti—objectiveoptimizationmethods．Studyashell—typeproductexample，a

6、ndtheresultsverifythefeasibilityofthismethod．Inthisthesis，thefollowingresearchcarriedoutandthecorrespondingconclusionsareasfollows：1．Deeplydiscussedtherheologicaltheoryofinjectionmoldingprocessingandeffectofprocessingparametersonpartsqulityatfirst．AndonthebaseofthecurrentCAEsoftwareofinjection

7、molding，thesimulationtheoryisstudied．Accordingtothestructuraldesignofproductsandtheuseoftherequest，determinethequalityindicatorsoftheproductsandtheprocessconditions．2．TakethedatasampleswhichisobtainedformDOEnumericalsimulationandIII硕l：学