Coupled Structural-Acoustic AnalysisAcousticAnalysisCoupledequations:implementation viacontactStepsinacoupledstructural- acousticanalysisExamplesContents:Effectsofdeformationsonthe acousticmediumAcousticAnalysisCoupledEquationsEquilibriumequationacousticmedium(fluid)::pressure;:resistanceorfluiddragwith::velocity;:acceleration:density;Constitutivebehavior::bulkmoduluswith:Harmonicanalysis::excitationfrequencywith:plexdensityandrewriteequations:IntroducevariationalfieldandapplyGreen’sdivergencetheorem:AcousticBoundaryConditionson:Prescribedpressure:eleration:Reactiveboundary:Structuralboundary:Reactiveboundarycanbeusedtomodel:freesurfacewavesinagravityfield:planewaveradiationboundarycondition:Impedanceoradmittance:Useshapefunctionsforpressureandperformintegration:Structuralbehaviorforaharmonicanalysis:plexequationsystem:withGenerateelementmeshforstructuralpartusingstresselementsGenerateelementmeshforacousticmediumusing“heattransfer”elementsGeneratecurves/surfacesalongfreeboundaryofacousticmediumifotherthanfullyreflectiveboundaryconditionsmustbemodeledStepsinacoupledstructural-acousticanalysis
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