聚合物擠出口模熔體流動數值模擬分析.pdf

1、青島科技大學碩士學位論文聚合物擠出口模熔體流動數值模擬分析姓名：張延恒申請學位級別：碩士專業(yè)：化工過程機械指導教師：唐躍20030611塞魚塑墮些旦壁墮整墮墊墼焦堡墊坌塑一第五～第六章為實驗研究部分，通過改變機頭形狀、物料種類和螺桿轉速對擠出機頭中的熔體流動進行了實驗研究，對實驗數據進行了分析找出了最佳擠出條件。并利用測得的數據對計算機模擬的結果進行了驗證。關鍵詞：擠出口模塑料熔體有限元分析數值模擬NumericalSimulation

2、ofPolymericMeltFlowinDiesABSTRACTSinglescrewextrusionisdefinedasacontinuousprocessinwhichpolym融cmaterialsarechangedtoaviscousform，mixed，pumpedandpressurizedusingascrewandshapedtofinalformItisastandardoperationinthepolyme

3、rprocessingfieldandiswildlyusedformanyproducts：profiles，fibers，strips，films，etcItisalsoemployedinavarietyofmanufacturingfunctions，forexample，injectionmouldingandblowmouldingItisreportedthattheextrusionprocessingheadtheli

4、stofallinplasticprocessingWiththedevelopmentofthecomputertechniques，thecomputertechnologyismoreandmoreusedinpolymerprocessingForthecomplexityoftheextrusionmoulding，energeticsandtheologymustbeusedtostudyitIntheextrusionmo

5、ulding，thequalityandquantityoftheproductsareaffectedviolentlybythedistributionofthetemperature，pressureandvelocityInrecentyears，thedevelopmentofCAE(ComputerAidedEngineering)inpolymerprocessinghasbeenremarkable，anditisexp

6、ectedtobemorerealisticinpolymerprocessingTheaimofthepresentworkistodevelopanewcomputermodeltostlldytheflowofapolymermeltthroughthemeteringregionofadieandinthisarticle，afiniteelementmethodandcomputerprogramareemployedInch