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ID:13570381
大小:1.12 MB
页数:71页
时间:2018-07-23
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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
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