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ID:47208070
大小:171.00 KB
页数:14页
时间:2019-08-25
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1、DevelopingaFiniteElementAnalysisAgentPadmanabhDabkeIntroductionRecentlythereisatrendtowardsusingitintheearlystagesofdesign.AdesignermayuseFEAjusttovalidatethestructuralintegrityofadesignorshemayuseitforstructuraloptimizationalongwiththeparametrizeddesign
2、techniques.ThispaperexaminestherequirementsofastructuralanalysisagentandproposesanarchitecturetofacilitateFEAinaconcurrentdesignenvironment.ThenextsectionbrieflydescribeshowFEAisusedinatypicalindustrialsetup.Section3presentsasurveyofexistingFEtools.Secti
3、on4discussessomeissuesrelatedtothedevelopmentofanFEAagent.Section5proposesanarchitecturefortheFEAagentthataddressestheissuesdescribedinSection4andfinallySection6presentstheconcludingremarks.StepsinFiniteElementAnalysisTheprocessofFEAstartswithidentificat
4、ionoftheregionofinterestandtheformulationofthephysicalproblem。[1].Theregionofinterestmightbeanassembly,acomponentoraportionofacomponent(oranassembly).Theinteractionoftherestoftheassemblyandtheenvironmentalconditionswiththeregionofinterestiscapturedintwow
5、ays.Onewaytorepresentthisinteractionistoidealizethemasloadsanddisplacementconstraintsontheregionofinterest.Forexampleaspotweldfixingacomponenttoabiggerstructurewillresultinaconstrainingallthedegreesoffreedomatthatpoint.Theothercommonlyusedmethodistousesp
6、ringand/orgapelements.AnalystsoftendrawaFreeBodyDiagramoftheregionofinteresttoclarifyitsinteractionwiththerestoftheassemblyandtogainmoreinsightintoitsstructuralbehavior.RequiredcomponentsandassembliesarethenretrievedfromtheSolidModelingsystemintothefinit
7、eelementpackage.Inrecentyearsanumberofcommercialsystemshavestartedofferingboth:FEAandSolidModelingcapabilities.Inthiscase,thedataexchangemayoccurbetweentwomodulesofthesamepackage.Theoriginaldesigngeometryissometimestoocomplicatedforthepurposeofanalysis.T
8、heanalystmaychoosetosimplifyitsothatitiseasiertomeshandincurslesscomputationalcost.ThistaskofsimplifyingthedesigngeometryisreferredtoasGlobalIdealization.GlobalIdealizationmayinvolvedeletion/modificationofsomeofthegeometri
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