Abaqus Co-Simulation - Mechanical Coupling

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1、STAR-CCM+UserGuide10940AbaqusCo-Simulation:MechanicalCouplingThistutorialdemonstrateshowtocarryoutamechanicalco-simulationcaseusingSTAR-CCM+andAbaqus.Co-simulationinvolvesastrongcouplingbetweenthetwocodes.Dataisexchangedatfrequentintervalsthatarecalledcouplingsteps.Thislevelofcommunicationbetweenthe

2、solversallowsyoutoobtainafullsolutionacrossthefluid-solidinterface.Inamechanicalcoupling,STAR-CCM+passestractionloadstoAbaqus(pressure+wallshearstress),andAbaquspassesdisplacementstoSTAR-CCM+.InAbaqusthetractionloadsareappliedtothesurfaceofthesolidstructure.InSTAR-CCM+thedisplacementsareusedasaninpu

3、ttothemeshmorpher.Duringtheco-simulationdataisautomaticallyexchangedbetweenSTAR-CCM+andAbaqususingtheSIMULIACo-SimulationEngine.Thistechniquediffersfromthefile-basedmethodinthatthecouplingbetweenthecodesismuchstronger,andSTAR-CCM+andAbaqusrunsimultaneously.Tosetupaco-simulationcase,separatemodelsmus

4、tbepreparedforthefluidandthesoliddomains.ThesolidmodelissetupinAbaqus,anddefinedwithinanAbaqusinputfile.ThefluidmodelissetupinaSTAR-CCM+simulationwheretheappropriateboundaryconditionsandphysicsaredefined.Foreachmodel,asetofco-simulationparametersmustbespecified.Theparametersidentifytheboundaries/sur

5、facesthatmakeupthefluid-structureinterface,thefielddatathatisimported/exportedattheinterface,thefrequencyofcouplingsteps,andsoon.STAR-CCM+isusedtoruntheco-simulationwhenthesetupiscomplete.Beforerunningtheco-simulation,itisgoodpracticetorunstandalonecasesforthefluidandsolidmodelstomakesurethattheycon

6、vergeindependently.Inthisexample,theAbaqusmodelcouldberunstandaloneusinganappliedpressureload,*DSLOAD,ontheplatesurfacewithanestimatedconstantvalueforthepressure.TheSTAR-CCM+simulationcouldberunwithoutmeshmorphing,usingafixedplate.Thistutorialsimulatesanelasticflapthatispinnedatthebase,andthensubjec

7、tedtoa10m/sflowofair.Themassandstiffnessoftheplatearesuchthatthefirstbendingmodehasafrequencynear4HzandthefirsttwistingVersion9.02STAR-CCM+UserGuideAbaqusCo-Simulation:MechanicalCoupling10941modehasaf