大型鋁合金鍛件成形工藝數(shù)值模擬及優(yōu)化.pdf

1、重慶大學碩士學位論文大型鋁合金鍛件成形工藝數(shù)值模擬及優(yōu)化姓名：孟毅申請學位級別：碩士專業(yè)：材料加工工程指導教師：周杰20090525英文摘要ABSTRACTAsourcoun仃y’saviationmdus仃y’sdeVelopment0nmedlrectionofmodemizationandhi曲一speed，merequnmentof1i曲觚ei曲taircraRbecomesla瑪erandla瑪erT11e仃endt11atA

2、1a110ytal【eplaceofFealloybecomeslargerdaybyday，especiallychangingtheFealloys饑lcturalcomponentonmeaircraftintoA1alloyf0唱ingorcastingpartAsthebeginningoftheLargeP1anePro釅aminourcoun臼Mmefb唱ingprocessingofAlalloybecomethefoC

3、usofpublicNowmerearet11reedi伍cultiesint11eAlalloyf0瑪ingprocessing，tlleyarethes仃ictrequirementofquali劬thecomplexf0mingprocessingandhighproductcost111isp印erbrienyin們ducedthetechnologyo仆eaV)，Ala110ydiefo曬ngandt11edevelopmen

4、tsta_tusofhomeandabroad，choosingaspecialAlalloyp疵asthe咖icalfo唱epiece，particularlyintroducedtheworkinCADandCAEofdieforging，nlefeasibili劬stabili吼qual時offoming(includingb曲mingfomin＆replicateando瑪anizedisfigurement)，mat面alut

5、ilizee伍ciencyandhowteduceload，howtoimproVemouldlifespaIlarea11emphasizedwhen、№workingomfonllingprocessofAla110yhea、7partbecauseofitsconlplicatedfo瑪ingprocessBytlleuseoftheCADsystemiIlCAT認，thefomingprocessanddiesofAla110y

6、heavyparthaVebeensetupInthispaper，t11rou曲adoptingrigid—Viscoplasticfiniteelementmethod(FEM)andusillgAmericanadvancedsofhvareDefomThroughFEMsimulation，Later，throughaseriesofsimulationsanalyzedtherelationsbetweenmaximalfor

7、ming10adand銜ctioncoe伍cient，pressVelocity，mewam—uptemperatureofdieAndtherelationsbe觚eentoolwearaIld銜ctioncoe所cient，pressveloci吼hardnessofthediewerealsoanalyzedAttheend，validatedtherationalityoftlleprocess舳ddieoftheA1alloy

8、fo唱ingttlrou曲examination，contrastedt11eresultsbet、Ⅳeensimulationandexamination，s嘲撕zedthesucceedexperience。Thetechnologyoffo瑪ing，F(xiàn)EMsimulationandmouldCADareintegratedtIlroughthisresearchnhelpstoshortendeVelopingperiod，iIn