挤压模具概述外文资料翻译

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1、外文资料翻译OverviewofadaptablediedesignforextrusionsW.A.Gordon.C.J.VanTyne.Y.H.MoonABSTRACTTheterm“adaptablediedesign”isusedforthemethodologyinwhichthetoolingshapeisdeterminedormodifiedtoproducesomeoptimalpropertyineitherproductorprocess.Theadaptablediedesignmethod,usedinconjunctionwithanuppe

2、rboundmodel,allowstherapidevaluationofalargenumberofdieshapesandthediscoveryoftheonethatproducesthedesiredoutcome.Inorderfortheadaptablediedesignmethodtobesuccessful,itisnecessarytohavearealisticvelocityfieldforthedeformationprocessthroughextrusiondiesofanyshapeandthevelocityfieldmustall

3、owflexibilityinmaterialmovementtoachievetherequiredmaterialflowdescription.Avarietyofcriteriacanbeusedintheadaptablediedesignmethod.Forexample,dieswhichproduceminimaldistortionintheproduct.Adoubleoptimizationprocessisusedtodeterminethevaluesfortheflexiblevariablesinthevelocityfieldandsec

4、ondlytodeterminethedieshapethatbestmeetsthegivencriteria.Themethodhasbeenextendedtothedesignofdiesfornon-axisymmetricproductshapes.Keywords:Extrusion;Diedesign;Upperboundapproach;Minimumdistortioncriterion1.IntroductionNewmetalalloysandcompositesarebeingdevelopedtomeetdemandingapplicatio

5、ns.Manyofthesenewmaterialsaswellastraditionalmaterialshavelimitedworkability.Extrusionisametalworkingprocessthatcanbeusedtodeformthesedifficultmaterialsintotheshapesneededforspecificapplications.Forasuccessfulextrusionprocess,metalworkingengineersanddesignersneedtoknowhowtheextrusiondies

6、hapecanaffectthefinalproduct.Thepresentworkfocusesonthedesignofappropriateextrusiondieshapes.Amethodologyispresentedtodeterminedieshapesthatmeetspecificcriteria:eithershapeswhichpro-duceproductwithoptimalsetofspecifiedproperties,suchasminimumdistortionintheextrudate,orshapeswhichproducep

7、roductbyanoptimizedprocess,suchasminimumextrusionpressure.Theterm“adaptablediedesign”isusedforthemethodnologyinwhichthedieshapeisdeterminedormodifiedtoproducesomeoptimalpropertyineitherproductorprocess.Thisadaptablediedesignmethod,usedinconjunctionwithanupperboundmodel,al