纤维缠绕压力容器的强度分析和优化设计

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1、华中科技大学硕士学位论文AbstractThefiber-woundcompositematerialspressurevessels(FWPV)withmetalinnerlinerhavebeenwidelyusedinthefrontiermilitarydomainssuchasaerospaceandenergychemicalandothercivilianareasbecauseofitsexcellentperformance,suchaslightweight,highpressureandgoodd

2、esignperformance.Therefore，theresearchandoptimizationdesignwillbeveryimportantinboththeorymeaningandpracticalvalue.Differentwithisotropicstructuressuchassteelcylinders,thestructuresofFWPVareverycomplexbecauseofitsanisotropicmaterialsandthespecialproductionproces

3、s.Inthedomeparts,boththewindingangleandthethicknessvaryalongthemeridianline.Inthispaper,thedifferentialequationoffilamentwindingangleisderivedbasedonthefiberwindingtheory,thedifferentialgeometryandthestressdistributionoffiber.Thentheformulaofthefiberlayerthickne

4、ssandthewindingangleareobtainedbyapproximationandinterpolationmethod.TheFEMmodelsoftheFWPVareestablishedbyANSYSsoftware.ThecalculatingandstrengthcheckingindicatedthatthedangerzoneofFWPVislocatedinthedome.Ahyperellipticfunctionisadoptedasthebasisfunctionfordescri

5、bingthemeridianofthedomeshape.Thedomecontourisoptimizedbytakingtheshapefactor(SF)astheobjectiveandtwoparametersinthebasisfunctionasthedesignvariables.Theconstraintsincludethegeometricallimitations,windingconditionsandtheTsai-Wufailurecriterion.Theoptimumdesignso

6、lutionisobtainedthroughtheparticleswarmoptimizationalgorithm.AndInfluencesoftheslippagecoefficientandthepolaropeningontheSFarealsodiscussed.FinallythebucklinginstabilityofFWPVisresearchedwhenundertheexternalload,theresultshowsthattheabilitytoresistbuckinghasbeen

7、improvedbyoptimizationofthereinforcedstructure.Theproposedmodelingandanalysismethodinthispaperprovideaneffectiveapproachforthefilamentwoundpressurevessels.ThecalculationresultsmayprovideII华中科技大学硕士学位论文certaintheoreticalguidancefortheproductionofFWPVs.Keywords:Com

8、positematerials;Filamentwinding;Pressurevessel;Domeoptimization;ReinforcementoptimizationIII华中科技大学硕士学位论文目录摘要..........................................................