Implementation of DNV standards, recommended practices in ...

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SDC Verifier implemented a bunch of DNV rules and regulations for offshore structures stability. It is possible to perform plate buckling check according to ... Skiptocontent CloseMenu SDCVerifier»EngineeringStandards»DNVStandards SDCVerifierimplementedabunchofDNVrulesandregulationsforoffshorestructuresstability.ItispossibletoperformplatebucklingcheckaccordingtoDNVCN30(DNVClassificationNotesno.30.1.BucklingStrengthAnalysis,July1995),platebucklingcheckandstiffenerbucklingcheckaccordingtoDNVRP-C201(RecommendedPracticeDNV–RP-C201,BucklingStrengthofPlatedStructures,October2010),weldstrengthcheckaccordingtoDNVOS-C101-LRFD(DesignofOffshoreSteelStructures,General(LRFDMethod),April2011)andDNVOS-C201-WSD(StructuralDesignofOffshoreUnits(WSDMethod),April2011),fatiguecheckaccordingtoDNVRP-C203(FatigueDesignofOffshoreSteelStructuresApril2016) DownloadPlateBucklingTutorialAccordingtoDNVRP-C201.DownloadWeldStrengthCheckTutorialbasedonDNVOS-C101-LRFDandDNVOS-C201-WSD BucklingStrengthAnalysis(DNVCN30,July1995) Structuralstabilitymustbeprovidedforthestructureasawholeandforeachstructuralmember. Therearebasicallytwowaysinwhichastructuremayloseitsstability: Snap-ThroughBuckling–itischaracterizedbyaload-deflectioncurve.Thestructurecollapseswhentheloadisincreasedbeyondthelimitpoint.ClassicalorBifurcationBuckling.–forrelativelysmallloads,theequilibriumstateofthestructureiscalledthepre-bucklingstateorthefundamentalstate.Whentheloadisincreased,abifurcationpointisreached,atwhichanothersolutiontotheequilibriumequationsexists.Beyondthebifurcationpoint,thepre-bucklingpathisunstable.Thepost-bucklingbehaviourthendependsonthecharacteristicsofthesecondarypath. Analysisofbucklingstrengthmustbebasedonthemostunfavourablebucklingmode’scharacteristicbucklingstrength. ReadthehelparticleonimplementationofDNVCN30PlateBucklinginSDCVerifier. BucklingStrengthofPlatedStructures(DNVRP-C201,October2010) Twodifferentbutequallyvalidapproachesaredescribedinthedocumentforevaluatingtheultimatestrengthandbucklingofplatedstructures. Thefirsttechniqueusesastandardbucklingcodeforstiffenedandunstiffenedsteelpanels.ThestiffenedflatplatesectionoftheearlierDNVClassificationNoteNo.30.1“BucklingStrengthAnalysis”(DNVCN-30)hasbeenupdatedanddeveloped.Forplates,stiffeners,andgirders,recommendationsareprovided. ThesecondtechniqueusesthePULS(PanelUltimateLimitState)computerizedsemi-analyticalmodel.Itisfoundedonawell-knownnon-linearplatetheory,thediscretizationofdeflectionsbyRayleigh-Ritz,andanumericalmethodforresolvingtheequilibriumequations. ReadthehelparticleonimplementationofDNVRP-C201Plate/StiffenerBucklinginSDCVerifier. DesignofOffshoreSteelStructures,General(LRFDMethod),(DNVOS-C101,April2011) DNV-OS-C101isthegeneralpartoftheDNVoffshorestandardsforstructures.Itprovidesprinciples,technicalrequirementsandguidanceforthestructuraldesignofoffshorestructuresandapplicabletoalltypesofoffshorestructuresofsteel.Thestandardisprimarilyintendedtobeusedindesignofastructurewhereasupportingobjectstandardexists,butmayalsobeusedasastand-alonedocumentforobjectswherenoobjectstandardexist. Thisregulationisbasedontheloadandresistancefactordesignmethod.Structuresandstructuralelementsshallbedesignedto: Sustainloadsliabletooccurduringalltemporary,operatinganddamagedconditions,ifrequiredMaintainacceptablesafetyforpersonnelandenvironmentHaveadequatedurabilityagainstdeteriorationduringthedesignlifeofthestructure. ReadthehelparticleonimplementationofDNVOS-C101-LRFDWeldStrengthinSDCVerifier. StructuralDesignofOffshoreUnits(WSDMethod),(DNVOS-C201,April2011) Thisoffshorestandardprovidesprinciples,technicalrequirementsandguidanceforthestructuraldesignofoffshorestructures,basedontheWorkingStressDesign(WSD)method. Thisregulationhasbeenwrittenforgeneralworld-wideapplication.Statutoryregulationsmayincluderequirementsinexcessoftheprovisionsbythisstandarddependingonsize,type,locationandintendedserviceoftheoffshoreunitorinstallation. Thissectiondescribesdesignprinciplesanddesigntechniquesincluding: WorkingstressdesignmethodDesignassistedbytestingProbabilitybaseddesign ReadthehelparticleonimplementationofDNVOS-C201-WSDWeldStrengthinSDCVerifier. FatigueDesignofOffshoreSteelStructures,(DNVRP-C203,April2016) Thisrecommendedpracticepresentsrecommendationsinrelationtofatigueanalysesbasedonfatiguetests(S-Ndata)andfracturemechanics. Thegoaloffatiguedesignistoensurethatthestructurehasasufficientfatiguelife.Calculatedfatiguelivesalsoformthebasisforefficientinspectionprogrammesduringproductionandtheoperationallifeofthestructure. DNVRP-C203isvalidforcarbonmanganesesteelmaterials(C-Mn)inairwithyieldstrengthlessthan960MPa. ReadthehelparticleonimplementationofDNVRP-C203FatigueinSDCVerifier. InfoonDNVStandards DetNorskeVeritas(DNV)OffshoreCodesincludeOffshoreStandardsprovidingtechnicalprovisionsandacceptancecriteriaforgeneralusebytheoffshoreindustryaswellasthetechnologicalbasisforDNVoffshoreservices. DNVisanautonomousandindependentfoundationthatundertakesclassification,certification,andotherverificationandconsultancyservicesrelatingtothequalityofships,offshoreunits,andinstallations,andonshoreindustriesworldwideandcarriesoutresearchaboutthesefunctions. DownloadSDCVerifier YourName CorporateEmail PhoneNumberYourFEASoftware AnsysFemapSimcenter Pleaseleavethisfieldempty.Pleaseleavethisfieldempty. Loading

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