资源描述：
《水辅助注射成型充填过程的数值模拟研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、华东交通大学硕士学位论文水辅助注射成型充填过程的数值模拟研究姓名：周建源申请学位级别：硕士专业：机械制造及其自动化指导教师：熊国良;匡唐清20080418摘要规律；最后通过数值模拟实验，并结合前人所做实验，总结出了水辅助注射成型技术的工艺与模具设计的指导建议。关键词：水辅助注射成型，充填过程，数学模型，数值模拟IIAbstractSTUDYONNUMERICALSIMULATIONFORTHEFILLINGSTAGEOFWATER-ASSISTEDINJECTIONMOLDINGABSTRACTWater
2、-assistedinjectionmoldingisaninnovationtechnologythatthemoldcavityispartiallyfilledwiththepolymermelt,followingbytheinjectionofhighpressurewaterintothecoreofpolymermeltforassistthecavitytofillingandpacking.Water-assistedinjectionmoldingnotonlyhasthevirtue
3、ofGas-assistedinjectionmoldingbutalsohasuniqueandsignificanceadvantages.Forexample,fastercycletime,thin-section,betterinnersurfacequalityandcanbeusedtomanufacturelargediameterparts.Typicalapplicationsinclude:plate,tubeandbarparts.Ithaswideapplicationprosp
4、ect.Water-assistedinjectionmoldinginvolvesthedynamicinteractionoftwototallydifferentmaterialsaboutpolymermeltandwater.Water-assistedinjectionmoldingcoolsthematerialbothinternallybythewaterandexternallybythemetallicmold.Itmusthaveaneffectontheflowingofpoly
5、mermelt,materialdistributionandpartsquality.Thesenewwater-relatedprocessingparametersincludetheamountofmeltinjection,melttemperature,moldtemperature,watertemperatureandwaterpressuredirectlyaffectmeltcooling,crystalline,materialdistributionandpartsquality.
6、Optimizedandcontroltheseparametershaveanimportantvalueonthesuccessofwater-assistedinjectionmoldingtechnology.Accordingtothecharacteristicsofthefluidsflowbehaviorinthreedimensionalthincavitiesinwater-assistedinjectionmoldingprocess,basedongeneralNewtonianf
7、luidequationsandsevenparametersCross-WLFviscositymodel,numericalsimulationforthefillingstageofwater-assistedinjectionmolding.Themainresearchworkconductedinthepaperislistedasfollows:1.Theorigin,development,principle,advantagesanddisadvantages,formingmethod
8、andapplicationofwater-assistedinjectionmoldingaredescribedindetail.Thetheoreticalstudyandexperimentalresearchofwater-assistedinjectionmoldingarereviewedgenerally.2.Basedonsomereasonablehypothesesandsimplification,ma
