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某型舰船水下爆炸冲击波载荷作用下结构动态响应数值仿真研究(英文).docx

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某型舰船水下爆炸冲击波载荷作用下结构动态响应数值仿真研究(英文) Title:NumericalSimulationofStructuralDynamicResponseunderUnderwaterExplosionShockWaveLoadActingonaCertainTypeofShip Introduction: Underwaterexplosionsposesignificantthreatstonavalvesselsandmaritimestructures.Theaccuratepredictionofstructuraldynamicresponseundersuchextremeloadingconditionsiscriticalforoptimizingdesign,ensuringsafety,andevaluatingpotentialdamage.Thisstudyaimstoinvestigatethenumericalsimulationofstructuraldynamicresponseundertheshockwaveloadgeneratedbyanunderwaterexplosiononaspecifictypeofship. 1.Background: 1.1UnderwaterExplosions:Underwaterexplosionsresultfromthedetonationofexplosivematerialsinasubmergedorpartiallysubmergedenvironment.Theygenerateintenseshockwavesthatpropagatethroughthesurroundingwatermedium,exertingsignificantloadsonnearbystructures. 1.2ShipStructures:Navalvessels,especiallywarships,aredesignedtowithstandandresistvariousexternalthreats,includingunderwaterexplosions.Understandingthedynamicresponseofshipstructuresundershockwaveloadingsiscrucialfordesigningeffectiveprotectivemeasures. 2.Objective: Themainobjectiveofthisresearchistoconductanumericalsimulationtoanalyzethestructuraldynamicresponseofaspecifictypeofshipundertheeffectsofanunderwaterexplosion.Thestudyaimstoprovidevaluableinsightsintothebehaviorofshipstructuresandaidintherefinementoftheirdesigntoenhancetheirsurvivability. 3.Methodology: 3.1GeometryandMeshGeneration:Theship'sgeometrywillbemodeledusingCADsoftware,ensuringtheaccuraterepresentationofitskeyfeaturesandcomponents.Thegeneratedgeometrywillbemeshedusingsuitabletechniquestodiscretizethedomainfornumericalanalysis. 3.2MaterialModels:Thematerialpropertiesoftheshipstructurewillbedefinedbasedonrelevantmechanicalandstructuraldata.Advancedmaterialmodelscapableofcapturingthedynamicbehaviorofthestructure,suchasshockwavepropagation,deformation,anddamage,willbeimplemented. 3.3ShockWaveLoadGeneration:Theshockwavecreatedbytheunderwaterexplosionwillbesimulatedusingappropriatecomputationalfluiddynamics(