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1、CompositeOverwrappedPressureVessel(COPV)ModelingTechniqueUsingWoundCompositeModeler(WCM)inAbaqusMingYu*,KunpengGuoMaterialsScienceandEngineeringDepartment,CoreR&D,DowChemicalCompanyIndustrial&CompositesDepartment,PolyurethaneSystem,DowChemicalCompany*Email:myu1@dow.comAB
2、STRACTCompositeoverwrappedpressurevessels(COPV)areanimportanttypeofhigh-pressurecontainerthatiswidelyusedinthecommercialandaerospaceindustries.Despitethewide-spreaduse,thetraditionaldesignandanalysismethodofCOPVheavilyreliesontheappropriateapplicationofheuristictechnique
3、s(rulesofthumb)andtheexperienceofengineer.Howeverformanyapplications,thecostinmaterialandresourcestofabricatemultipletestiterationsisextremelyprohibitive.Thus,aleaner,moreaccuratedesignandanalysisprocessisnecessaryforamoregeneralCOPVapplication.Inthispaper,theresearchwor
4、kwasfocusedonthefiniteelementmodelingandthermal-mechanicalsimulationonCOPV.Thermal-mechanicalandtemperature-dependentpropertiesofglassfiberreinforcedcompositeshavebeenexperimentallyandnumericallycharacterizedinconstituents(epoxyresin,glassfiber)andunidirectionallaminatel
5、evels.AdetailedFEAmodelingstrategyofCOPVinanAbaqus/CAEplug-intoolnamedWoundCompositeModeler(WCM)wasthenpresented.Acoupledthermal-mechanicalanalysiswasfinallyconductedonthecooling-downphaseofcurecycletoinvestigatethecoolingrateeffectsonthetransientandresidualthermalstress
6、levelanddistributions.Theresultsobtainedareofgreatvalueforguidingthecoolingrateselectioninmanufacturing,andconsequentlyhelpCOPVmanufacturerimproveproductivity.KEYWORDSCompositeOverwrappedPressureVessels(COPV),FilamentWinding,WoundCompositeModeler(WCM),FiniteElementAnalys
7、is,AbaqusINTRODUCTIONCompositeOverwrappedPressureVessel(COPV)hadbeeninusefordecadesandiscurrentlyusedin[1]avarietyofapplicationsfromgiantsolidrocketmotorcasestotinypaint-ballgunpressurereservoirs.Theyarefoundmostfrequentlyinapplicationswherecomponentweightiscritical.Inth
8、eseapplications,COPVhasobviousadvantagesoverhomogenousmetallicpressurevessels.AsshowninFig.1,atypicalCO