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基于辐射声场预报的圆柱壳表面空间采样研究(英文).docx

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基于辐射声场预报的圆柱壳表面空间采样研究(英文) Title:StudyofSpatialSamplingontheSurfaceofCylindricalShellBasedonRadiatedSoundFieldPrediction Introduction: Cylindricalshellsarecommonlyusedinvariousindustries,suchasaerospace,marine,andcivilengineering.Inmanyapplications,itiscrucialtoobtainaccuratesoundfieldpredictionsonthesurfaceofcylindricalshells.Forinstance,intheaerospaceindustry,thesoundfieldpredictionplaysacriticalroleindesigningandoptimizingtheacousticpropertiesofaircraftengines.Toachieveaccuratesoundfieldprediction,itisnecessarytoconductspatialsamplingonthesurfaceofcylindricalshells.Therefore,thispaperaimstoinvestigatethespatialsamplingstrategybasedonradiatedsoundfieldprediction. Background: Spatialsamplingisacrucialstepinobtainingaccuratesoundfieldpredictions.Intheliterature,severalapproacheshavebeenproposedtosamplethesurfaceofcylindricalshells,suchasuniformsampling,non-uniformsampling,andoptimalsampling.However,theeffectivenessoftheseapproachesislimitedwhendealingwithreal-worldscenarios,wherevaryinggeometriccomplexitiesandmaterialpropertiesmayaffectthesoundfielddistribution.Recently,radiatedsoundfieldpredictionmethodshavebeenintroducedtoprovideaccuratesoundfieldpredictionsonthesurfaceofcylindricalshells. Methodology: Inthispaper,weproposeaspatialsamplingstrategybasedontheradiatedsoundfieldpredictionmethod.Theproposedstrategyconsistsofthefollowingsteps: 1.Constructafiniteelementmodelofthecylindricalshellandsimulatetheradiatedsoundfieldusingnumericalmethods. 2.Obtainthesoundpressuredistributionatseveralregionsalongthesurfaceofthecylindricalshell. 3.Identifythecriticalregionswithhighsoundpressureamplitudesandusethemassamplingpoints. 4.Generateaspatialsamplinggridbasedontheidentifiedsamplingpoints. 5.Usetheproposedsamplinggridtoextractthesoundpressureinformationonthesurfaceofthecylindricalshell. Results: Tovalidatetheproposedspatialsamplingstrategy,weconductednumericalsimulationsonacylindricalshellmodel.Theresultsshowthattheproposedstrategycaneffectivelyidentifythecriticalsamplingpoin