abaqus声学分析-acoustics-lecture5

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1、Structural-AcousticAnalysiswithABAQUSAcousticScatteringandShockLecture5深圳ABAQUS培训http://www.xncae.com深圳ANSYS培训http://www.xncae.com深圳ANSYShttp://www.xncae.com深圳ABAQUShttp://www.xncae.com深圳有限元培训http://www.xncae.comABAQUS培训http://www.xncae.comANSYS培训http://www.xn

2、cae.comStructural-AcousticAnalysiswithABAQUSOverviewAcousticScatteringandShockwithABAQUSExampleProblemStructural-AcousticAnalysiswithABAQUSAcousticScatteringandShockwithABAQUSStructural-AcousticAnalysiswithABAQUSAcousticScatteringandShockwithABAQUSABAQUSprovid

3、esacapabilityforintroducinggeneralizedforcesonacousticandsolidmediaassociatedwiththearrivalofdilatationalwaves.Thisappliestoacousticscatteringproblemsandproblemsinvolvingblastloadsinairorwater.Inadynamicprobleminvolvingfluidandcoupledsoliddomains,excitedbyapro

4、pagatingwaveinthefluidarrivingfromoutsidethedomain,wavefieldsinthefluidcanbesuperimposed,sincethefluidmechanicsisassumedlinear.Theobservedtotalpressureinthefluidcanthusbedecomposedintotwocomponents:theknownincidentfield,andthewavefieldduetoreflectionsatfluidbo

5、undariesandinteractionswiththesolid.Thislatterfieldisreferredtoasthe‘scattered’field,andcanbecomputedsimplybyapplyingloadsatthefluid-solidinterfacethatcorrespondtotheeffectsoftheincidentwavefield.Structural-AcousticAnalysiswithABAQUSAcousticScatteringandShockw

6、ithABAQUSIncidentwaveloadingTheexplosiveloadisspecifiedwiththe*INCIDENTWAVEoptionandrelatedsuboptions.InABAQUS/CAE,theseoptionsisnotcurrentlysupportedandmustbeinvokedusingtheKeywordsEditor.*INCIDENTWAVEisappliedonboththestructureandthefluidattheircommoninterfa

7、ce.Thisloadisadistributedloadsimilarto*DSLOAD.Theblastsourcecanbelocatedoutsidetheacousticdomain.Analysisistrackedbeginningatthestandoffpoint.Usuallyitisdesirabletohavethestandoffpointlocatedasclosetothestructureaspossible.Structural-AcousticAnalysiswithABAQUS

8、AcousticScatteringandShockwithABAQUSYoumustspecifythelocationofsourcepoint(positionofthecharge)andlocationofthestandoffpoint(thepositionwheretheincidentwaveamplitudeisspecified).AB