Acoustic Analysis in Abaqus声学仿真

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1、AcousticAnalysisinAbaqus2011Febweb-trainingSimutechSolutionCorporationAgendaAcousticAnalysisinAbaqusStructuralAcousticApplicationsAcousticProblemTypesPossiblewithAbaqusAcoustic名詞解釋Acousticanalysis的準備事項AcousticAnalysis建模指引ExamplesImprovingAcousticPerformanceWebina

2、rTitle–MonthYear–SeeView>SlideMastertochange2StructuralAcousticApplicationsHumanperceptionandcomfortEnginenoiseArchitecturalacousticsDesignandanalysisofelectro-acousticsystemsUnderwaterapplicationsVibrationsofstructuresinteractingwithfluidsPiezoelectricTirenoiseU

3、nderwaterCourtesy:HoneywellFM&TImprovingAcousticPerformanceWebinarTitle–MonthYear–SeeView>SlideMastertochangeAcousticProblemTypesPossiblewithAbaqusAbaqusaimstocoverapplicationsthatcanbeanalyzedwellwithapressure-basedfiniteelementformulation.ImprovingAcousticPerfo

4、rmanceWebinarTitle–MonthYear–SeeView>SlideMastertochangeAcousticProblemTypesPossiblewithAbaqusUncoupledacousticsproblems(pureacousticsproblems)Interiorsoundproblems(automobiles,airplanes,rooms)Exteriorsoundpropagationproblems(radiationfrommachinery,engines)Couple

5、dstructural-acousticsproblemsForcedexcitation(loudspeakers)Fluid-loadedsteady-statevibration(vibratingplates,shells)Acousticwavesimpingingonstructures(submarines)ImprovingAcousticPerformanceWebinarTitle–MonthYear–SeeView>SlideMastertochangeAcousticProblemTypesPos

6、siblewithAbaqusCoupledproblemclassifications:“light”and“heavy”fluids“Light”fluidssuchasairusuallyexertonlyrelativelysmallacousticpressuresonthestructure.“Heavy”fluidssuchaswatermayexertlargeacousticpressuresonthestructure.Thisdistinctiondependsonthemassandstiffne

7、ssofthefluidrelativetothemassandstiffnessofthestructure.ImprovingAcousticPerformanceWebinarTitle–MonthYear–SeeView>SlideMastertochangeAcoustic名詞解釋AcousticsTerminologyWhatisimpedance(physically)?TransmissionlossofabodyduetosurfaceeffectsImpedanceTheacousticimpedan

8、ce,Z,isdefinedastheratioofacousticnpressuretotheassociatedparticlespeedinacertaindirection:pZnvnfwhereisthefluidparticlevelocityvectorandisaunitvnfvectorinth