外文翻译----有限元软件的发展

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1、DevelopingaFiniteElementAnalysisAgentPadmanabhDabkeIntroductionRecentlythereisatrendtowardsusingitintheearlystagesofdesign.AdesignermayuseFEAjusttovalidatethestructuralintegrityofadesignorshemayuseitforstructuraloptimizationalongwiththeparametrizeddesigntechniques.Thispaperexaminestherequirements

2、ofastructuralanalysisagentandproposesanarchitecturetofacilitateFEAinaconcurrentdesignenvironment.ThenextsectionbrieflydescribeshowFEAisusedinatypicalindustrialsetup.Section3presentsasurveyofexistingFEtools.Section4discussessomeissuesrelatedtothedevelopmentofanFEAagent.Section5proposesanarchitectu

3、refortheFEAagentthataddressestheissuesdescribedinSection4andfinallySection6presentstheconcludingremarks.StepsinFiniteElementAnalysisTheprocessofFEAstartswithidentificationoftheregionofinterestandtheformulationofthephysicalproblem。[1].Theregionofinterestmightbeanassembly,acomponentoraportionofacom

4、ponent(oranassembly).Theinteractionoftherestoftheassemblyandtheenvironmentalconditionswiththeregionofinterestiscapturedintwoways.Onewaytorepresentthisinteractionistoidealizethemasloadsanddisplacementconstraintsontheregionofinterest.Forexampleaspotweldfixingacomponenttoabiggerstructurewillresultin

5、aconstrainingallthedegreesoffreedomatthatpoint.Theothercommonlyusedmethodistousespringand/orgapelements.AnalystsoftendrawaFreeBodyDiagramoftheregionofinteresttoclarifyitsinteractionwiththerestoftheassemblyandtogainmoreinsightintoitsstructuralbehavior.Requiredcomponentsandassembliesarethenretrieve

6、dfromtheSolidModelingsystemintothefiniteelementpackage.Inrecentyearsanumberofcommercialsystemshavestartedofferingboth:FEAandSolidModelingcapabilities.Inthiscase,thedataexchangemayoccurbetweentwomodulesofthesamepackage.Theoriginaldesigngeometryissometimestoocomplicatedforthepurposeofanalysis.Thean

7、alystmaychoosetosimplifyitsothatitiseasiertomeshandincurslesscomputationalcost.ThistaskofsimplifyingthedesigngeometryisreferredtoasGlobalIdealization.GlobalIdealizationmayinvolvedeletion/modificationofsomeofthegeometri