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1、Workshop13UrbanBlast214.5ReleaseIntroductiontoANSYSAutodynpartII©2011ANSYS,Inc.November1,20121UrbanBlast2Goal•ModelablastinanurbanenvironmentProcedure•Run2Danalysistocreateremapfile•ImporturbanenvironmentgeometryandstartAUTODYN•Fullycouplemulti-materialEulersolverwithblasttothegeometry•Ex
2、tendtheEulergrid•Createsomeanimationsofresults©2011ANSYS,Inc.November1,20122QuickInstructions•StartWorkbenchandcreateandopenaDoublePrecisionAUTODYNsystem•Setupthe2Daxi-symmetricgeometrybelow,withorigin(0,0)and50mmelementsAIRI.E.=206800.020,000mm(400elements)2,100mm1,500mmTNT600mmYoucanski
3、psettingupthis2Daxi-20,000mm(400elements)symmetricproblemifyouwish.Thedatafile•PlaceaDetonationPointat(1800,0)autodyn.filcreated•SetalargeEnergyReferenceCyclehere,andusedinthe3Dproblem,is•Runto12msincludedinthe©2011ANSYS,Inc.November1,20123WorkshopfolderQuickInstructions-WriteoutaDatafile
4、forremappinginto3D©2011ANSYS,Inc.November1,20124QuickInstructions•InthesameWorkbenchProject,createanExplicitDynamicssystem•Importthe3DgeometryfileUrbanEnvironment.agdbandopenMechanical•SettheStiffnessBehaviorofallbodiestoRigid•Meshthebuildingswiththedefaultsettings•InsertStandardEarthGrav
5、ity(thiswillhavenosignificanteffectoverthetimeframeofthisanalysis,butaloadmustbeappliedinordertolinktoAUTODYN)•SetanEndTimeof0.05s•FromtheProjectPage,LinktoAUTODYN(DoublePrecision)©2011ANSYS,Inc.November1,20125QuickInstructions•InAUTODYN,LoadAirandTNTfromtheAUTODYNMaterialLibrary•Createan
6、InitialCondition–Name:StillAir–IncludeMaterial:Air–InitialDensity:0.001225–InternalEnergy:206800.0•CreateanEulerMulti-materialPart–Originxyz:(-25000,-49000,0)0,0,0–SizeDX,DY,DZ:(80000,80000,40000)–CellsinIJKdirections:(80,80,40)–FillwithInitialCondition:StillAir©2011ANSYS,Inc.November1,20
7、126QuickInstructions•Remapthe2Dsolutionat12msintotheEulerPartFilename:autodyn.fil(fromprojectdirectory)Origin:(15000,-9000,0)SelectMaterialstoRemap:AllSymmetryaxisdirection:ZaxisInternalEnergycontourplot,35%opacity©2011ANSYS,Inc.November1,20127QuickInstructions•Turn
