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1、Workshop8ExplosiveDemolitionofConcrete14.5ReleaseIntroductiontoANSYSAutodynpartII©2011ANSYS,Inc.November1,20121WorkshopGoalandProcedureGoal:ModeltheExplosiveDemolitionofaConcreteSlabProcedure:StartAUTODYNstandaloneSetuptheproblemusing2DAxialSymmetryModeltheConc
2、reteinLagrangeModeltheExplosiveinEulerAddEuler/LagrangeInteractionsSolvetheproblem©2011ANSYS,Inc.November1,20122QuickInstructions•StartAUTODYNstandaloneandcreatea2Daxiallysymmetricmodelwiththedefaultunits(mm,mg,ms)withtheident“demolition”©2011ANSYS,Inc.November
3、1,20123QuickInstructionsLoadinAir,Conc-35MpaandTNTfromthemateriallibraryModifythefailuremodelofConc-35Mpatobeprincipalstresswithatensilefailureof5000kPaandacracksofteningfractureenergyof100J/m2CreateaninitialconditioncalledATMOSforairwithaninternalenergyof2.068
4、x105CreateaFlowOutEulerboundaryconditionwithequalpreferenceforflowoutmaterialsSetuptwopartsasshowninthefollowingfigures©2011ANSYS,Inc.November1,20124QuickInstructionsLagrangepart:TARGET(0.0,1000.0)(500.0,1000.0)Conc35MPa100elements(0.0,0.0)(500.0,0.0)50elements
5、©2011ANSYS,Inc.November1,20125QuickInstructions2DmultimaterialEulerpart:SPACEFlowoutboundary140elements(-800.0,1000.0)(600.0,1000.0)InitialconditionATMOS100elementsFlowoutboundaryFlowoutboundary200200(-800.0,0.0)(600.0,0.0)(-200.0,0.0)TNT©2011ANSYS,Inc.November
6、1,20126QuickInstructionsCreateadetonationpointat(-200.0,0.0)Setupinteractions•UsetheexternalgapcontactforLagrange/Lagrangecalculationsandcalculatethegapsize(shouldequal1.0)•UseAutomaticfortheEuler/LagrangecouplingSetthewrapupcriteriatobeatimeof0.3msOutputthefil
7、eevery0.01msRunthesimulationandcreatesomeGIFandGFAanimations©2011ANSYS,Inc.November1,20127Step1–StartAUTODYNstandalone1.StartAUTODYNstandalone(Doubleclickautodyn.exe)©2011ANSYS,Inc.November1,20128Step2-Initiateanewproject2.aStartanewproject2.bBrowsetoselectapro
8、jectFolder2.cEnteranIdent“explosive_demolition”andaHeading2.dSelect2DAxialSymmetry2.eKeepthedefaultsetofunits(recommendedforaccuracy)2.fAcceptthedata©2011ANSYS,Inc.November1
