地震激励下储罐内液体的减晃试验研究及有限元分析

地震激励下储罐内液体的减晃试验研究及有限元分析Title:ExperimentalStudyandFiniteElementAnalysisofLiquidSloshinginStorageTanksunderEarthquakeExcitationAbstract:Thedynamicbehaviorofliquidsloshinginstoragetanksunderearthquakeexcitationisofsignificantimportanceforthedesignandsafetyassessmentofthesestructures.Thispaperpresentsanintegratedstudyinvolvingexperimentalinvestigationandfiniteelementanalysistounderstandandanalyzethesloshingphenomenon.Theprimaryobjectiveistoevaluatetheresponseofstoragetankssubjectedtoseismicexcitationsandprovidevaluableinsightsintotheirstructuralintegrity.1.Introduction:1.1BackgroundandSignificance:Storagetanksarewidelyusedinindustriessuchasoilandgas,chemical,andtransportationforstoringfluidsandcommodities.Duringanearthquake,thedynamicforcecaninducethesloshingphenomenon,whichcanleadtostructuraldamageandpotentiallossofcontainment.Therefore,understandingthebehaviorofsloshinginstoragetankshasbecomeessentialforensuringtheirsafeoperation.1.2ResearchObjective:Theprincipalobjectiveofthisstudyistocomprehensivelyinvestigatethebehaviorofliquidsloshinginstoragetanksunderearthquakeexcitationthroughexperimentaltestingandfiniteelementanalysis.Theresearchaimstoprovidevaluableinformationtoenhancetheunderstandingofstoragetankresponseandcontributetothedevelopmentofeffectivemitigationmeasures.2.ExperimentalInvestigation:2.1TestSetupandInstrumentation:Ascaled-downmodelofastoragetankrepresentativeofindustrialpracticeisdevelopedfortheexperimentaltesting.Themodelisconstructedusingmaterialswithmechanicalpropertiessimilartotheactualtank.Thetankissubjectedtocontrolledhorizontalexcitationstosimulateseismicmotions,andtheresultingliquidsloshingismonitoredusingvariousmeasurementdevices.2.2TestMatrix:Arangeofearthquakeexcitationswithdifferentmagnitudesandfrequenciesareappliedtothestoragetankmodel.Theresponsesofthetank,includingsloshingheight,pressuredistribution,andimpactforces,arerecordedatvariouspointsofinterest.Thesetestsaimtounderstandthecomplexinteractionsbetweenthetankstructureandthesloshingliquidundervaryingshakingconditions.3.FiniteElementAnalysis:3.1NumericalModelDevelopment:Afiniteelementmodelofthestoragetankisdevelopedbasedontheexperimentalsetup.Thetankstructureandtheliquidarediscretizedintosuitablecomputationalelementsconsideringtheirrespectivematerialproperties.Thesimulationaccountsforthefluid-structureinteraction,capturingthedynamicsofliquidsloshingwithinthetank.3.2ValidationandAnalysis:Thenumericalmodelisvalidatedagainsttheexperimentalresultstoensureitsaccuracyinsimulatingthedynamicbehaviorofliquidsloshing.Thevalidatedmodelisthenutilizedtopredicttheresponseofthestoragetankunderdifferentseismicexcitations.Variouscriticalparameters,suchasthenaturalfrequencyofthetank,liquidsloshingpatterns,andimpactforces,areanalyzedtogaininsightintothestructuralperformance.4.DiscussionandConclusion:Theexperimentalandnumericalresultsarecomparedandanalyzedtoprovideacomprehensiveunderstandingofliquidsloshingbehaviorinstoragetanksunderseismicexcitations.Theresearchfindingsprovideinsightsintothefundamentalmechanismsofsloshing,theimpactonstructuralintegrity,andthenecessarymitigationmeasures.Thisknowledgecanbeutilizedtoimprovethedesignandoperationalguidelinesforstoragetankssubjectedtoseismicloads.5.FutureResearch:Thisstudyopensavenuesforfurtherresearch.Investigationsintotheeffectsofdifferenttankgeometries,liquidproperties,andstructuraldesignscancontributetoamorecomprehensiveunderstandingofthesloshingphenomenon.Theimpactofvariousmitigationstrategies,suchasbafflesandwavedampers,shouldalsobeexploredtooptimizetheseismicresponseofstoragetanks.Inconclusion,theexperimentalstudyandfiniteelementanalysispresentedinthispaperprovideavaluablecontributiontotheunderstandingofliquidsloshingbehaviorin