文档名：A Design Approach to Assess Effects of NonContact Underwater Explosions on Naval Composite Vessels
Abstract：Despitethenon-contactunderwaterexplosionphenomena(UNDEX)havebeenstudiedfordecadesandseveralnumericalmethodshavebeenproposedinliterature,itseffectsonmilitarystructures,especiallycompositeones,areevennowadaysmatterofresearch.Inearlydesignphases,itisnotalwayspossibletoverifytheshockresistanceofhullstructuresmodellingthewholephenomenon,inwhichfluid,gasandsolidpropertiesmustbeproperlysetinafullycoupledfluid-structureinteraction(FSI)numericalmodel.Theseonesareextremelycomplextoset,computationallydemandingandcertainlynotsuitableforeverydaydesignpractice.Inthispaper,asimplifiedfiniteelement(FE)model,easytouseinanearlydesignphase,isproposed.Both,thestructureandthefluidaresimulated.Inthisapproximation,thefluidbehaviourissimplified,usingspecialfiniteelements,availableinacommercialsoftwareenvironment.Thischoicereducesthecomputationaltimeandnumericaleffortsavoidingtheproblemofcombiningcomputationalfluiddynamics(CFD)andFEdomainsandequationsinafullycoupledfluid-structureinteractionmodel.Atypicalparallelbodyblockofaminesweeperismodelled,usingtwo-dimensionalmulti-layeredshellelementstoproperlyaccountforthecompositematerialsbehaviour.Forthefluidinstead,threedimensionalvolumetricelements,directlycoupledtothestructuralelements,areplaced.Inaddition,thesamecalculationisperformed,modellingseparatelyfluidintheCFDenvironmentandstructuresinthefiniteelementone.Thus,realizingafullycoupledfluid-structureinteractionmodel.Theresultsobtainedbyapplyingbothnumericalmodelsarecomparedwiththestructuralresponsemeasuredonboardofacompositeshipduringafull-scaleshocktest.Thesimplifiedproposedprocedureprovidesresultsinsatisfactoryagreementwithexperiments,allowingthevalidationofthemodel.ApproximationsarediscussedanddifferenceswiththerealphenomenonandfullycoupledCFD+FEmethodareshown,providingabetterunderstandingofthephenomena.Eventually,themodellingstrategyhasbeenconsideredavaluableandcost-effectivetoolfortheconceptandpreliminarydesignofcompositestructuressubjecttounderwaterexplosions.
作者：F.Mannacio F.DiMarzo M.Gaiotti C.M.Rizzo M.Venturini Author：F.Mannacio F.DiMarzo M.Gaiotti C.M.Rizzo M.Venturini
作者单位：ItalianNavy,NavalSupportandExperimentationCentre,CSSNVialeS.Bartolomeo,400,19126LaSpezia(Italy)UniversityofGenova,PolytechnicSchool,DITENViaMontallegro,1,16145Genova(Italy)
刊名：哈尔滨工程大学学报（英文版） ISTIC
Journal：JournalofMarineScienceandApplication
年，卷(期)：2024, 23(2)
分类号：
Keywords：Underwaterexplosions Shockresistance Composites Fluid-structureinteraction Experimentalanalysis Numericalsimulation Vulnerability Preliminarydesign
机标分类号：R622O646S431.9
在线出版日期：2024年5月27日
基金项目：ADesignApproachtoAssessEffectsofNon-ContactUnderwaterExplosionsonNavalCompositeVessels[
期刊论文] 哈尔滨工程大学学报（英文版）--2024, 23(2)F.Mannacio F.DiMarzo M.Gaiotti C.M.Rizzo M.VenturiniDespitethenon-contactunderwaterexplosionphenomena(UNDEX)havebeenstudiedfordecadesandseveralnumericalmethodshavebeenproposedinliterature,itseffectsonmilitarystructures,especiallyc...参考文献和引证文献
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A Design Approach to Assess Effects of Non-Contact Underwater Explosions on Naval Composite Vessels
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