Attribute Management System for Engineering Analysis

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1、EngineeringwithComputers(2002)18:339351OwnershipandCopyright2002Springer-VerlagLondonLimitedAttributeManagementSystemforEngineeringAnalysis112RobertM.OBara,MarkW.BeallandMarkS.Shephard1SimmetrixInc.;2RensselaerDesignResearchCenter,RensselaerPolytechnicInstitute,Troy.NY,USAA

2、bstract.Thispaperpresentsthedesignandimplemen-sisprocedureswhichcandetermineapproximatetationofanattributemanagementsystemthatsupportsthevaluestothedesiredsolutionparameters.Thesol-specificationofinformation,pastthatofthedomaindefi-utionsobtainedthenneedtobeexaminedtodeter-nit

3、ion,neededtoqualifyanengineeringanalysis.Theinfor-mineiftheresultsobtainedareoftherequestedmationmanagedbythissystemincludesvariousordertensorslevelofaccuracy.Substantialprogresshasbeenneededtospecifytheanalysisattributesofmaterialproper-madeonmethodstoestimatethemeshdiscret

4、izationties,loads,andboundaryconditionsaswellasadditionalerrors[5,6],whilemethodstoestimateanalysisdataconstructsusedbytheanalysissuchasstrings,andreferencestoeitherotherattributesormodelentities.Themodelingerrorsarebeginningtoreceiveincreasedsystemsupportsgeneraldependencie

5、sandvariationsofthisattention.Iftheerrorestimatesindicatethattheattributeinformationaswellasitsassociationwiththemodeland/oritsdiscretizationneedsimprovement,variousgeometricentitieswhichconstitutethegeometricthemodelconstructionand/ormeshgenerationpro-domainbeinganalyzed.In

6、addition,sincetheinformationiscedurescanbeusedtoperformtherequiredadap-coupledwiththemodelentitiesthemselves,thesystemcanbetationsbeforethenextanalysisstep.usedtostoreinformationneededtocontrolthediscretizationTheapplicationofanautomatedadaptiveanalysisprocessofthegeometricd

7、omain.Sincetheinformationcanenvironmentofthistyperequiresprocedurestosup-bebothspatiallyandtemporallyvarying,anexpressionsub-portthegeometry-basedspecificationoftheloads,systemwasalsodesignedintothesystem.Theframeworkmaterialproperties,boundaryconditions,andinitialwasdesigned

8、usingobject-orientedtechniques,implementedconditionsrequiredtocompletethesp