DNV Sesam software - RaPiD-models

DNV Sesam software. # Background. Sesam is a collection of software applications and services for design and strength assessment (finite-element analysis) ... About Background Documentation AboutRaPiD-modelsApplicationPartnersUsecasesDNVSesamsoftwareBackgroundOpportunity1:ROMforreducedanalysistimeandcostOpportunity2:ROMforreal-timeresponseandpredictions(digitaltwin)BridgeintegrityFloatingwind#DNVSesamsoftware#BackgroundSesamisacollectionofsoftwareapplicationsandservicesfordesignandstrengthassessment(finite-elementanalysis)ofoffshorewind,offshoreoil&gas,andmaritimestructures.SesamisactivelydevelopedbyDNV,hasafifty-yearoldhistoryandisinwidespreaduseinoffshoreandmaritimeindustriesaroundtheworld.AsanexampleSesammaybeusedinthedesignoffixedandfloatingoffshorewindturbines(OWT)foundationstructures.Structuralengineersusethesoftwaretoperformextensivestructuralanalysisforallrelevantloadingconditionsasdictatedbyindustrystandardsandregulations.Calculationofthestructure'sfatiguelifeorutilizationfactors(fromcodechecks)areofinterest.Sesamsupportstheentireworkflowfrom3Dmodellingandgenerationofhydrodynamicwaveloadconditionstofinite-elementanalysisandfatigue-andcode-checkpostprocessing.AnalysescanberunonadesktoporinthecloudthroughSesamCloudComputeServices.AkeytopicintheRaPiDprojectisreduced-ordermodels(ROM).WiththistechnologyweseeseveralopportunitiesforSesamsoftware.#Opportunity1:ROMforreducedanalysistimeandcostTypicallyaSesamanalysismustbeperformedmanytimesforthesamestructure,fordifferentenvironmentalandloadingconditions.Thusevenforrelativelysmallstructuresthetotalanalysistimecanbesignificant.Analysisinthecloudprovidesreducedanalysistime,butcomesatanincreasedcostforendusers.Areduced-ordermodelcouldbeusedasasurrogateforthefinite-elementmodeltoreducetheanalysistime(orequivalentlycloudcomputaitoncost),oralternativelyallowformoreexhaustiveanalysesacrossawiderrangeofloadingorenvironmentalconditions.#Opportunity2:ROMforreal-timeresponseandpredictions(digitaltwin)TodaySesammaybeusedtoassessthefatiguelifeofanOWTstructureinitsdesignphasebasedonexpectedorrule-basedloadingconditionsdeterminedfromhistoricalobservationsofseastatesattherelevantstructurelocation.Clearlyinsuchanalysesthereislargeuncertainty,whichhastobeaccountedforwithsignificantconservatism.Withareduced-ordermodelcoupledtoseastateobservationsitispossibletotracktheaccumulatedfatiguedamageofthestructureinrealtime.Thismayinturnbeusedtopredictremainingfatiguelifeandtooptimizeinspectionandmaintenance.Withthiscloserandmoreaccuratetrackingoffatiguedamagethereisopportunitytoremoveconservatisminthestructuredesign,therebyreducingonconstruction(stell)cost.Thisconceptmaybetakenastepfurtherifdatafromon-boarddatasensorsareavailable.Datasensorsmayincludewaveradars,accellerometersorstraingauges.ThesensordatamaybeusedasinputtoaROM,providingformoreaccuratefatiguelifecalculation,orprovidealertswhenthestructure(orROMsimulation)experiencescriticalutilization(suchasfromafreakwave). ← Partners Bridgeintegrity →