蜂窝夹层板在patran中的建立

Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationWORKSHOP7BMODELINGHONEYCOMBWITHSOLIDANDSHELLELEMENTSWS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporation*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporation*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationProblemDescriptionUnlikethepreviousworkshopthatinvolvedmodelingthehoneycombstructureusingtheMSC.LaminateModeler,thisworkshopisusedtoshowhowtomodelthehoneycombstructureusingsolidandshellelements.Solidhexahedralelementsaretobeusedtorepresentthecore,andshellelementsaretousedtorepresentthelaminatebacking.Similarconstraintsandloadingaretobeappliedtothemodel.AftertheMSC.Nastrananalysistheresultsaretobelookedat,andperhapscomparedtothoseforthepreviouslaminatemodel.*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationSuggestedExerciseStepsCreateanewdatabaseImporttwosurfacesfromanIGESFileCreateasolidfromthetwoimportedsurfacesMeshthesolidusingIsoMeshMeshatsurfacesofthesolidusingIsoMeshEquivalencethesolidandsurfacemeshesCantileveroneendofhoneycombmodelApplytheforceloadatthefreeendofthemodelCreatematerialpropertiesusingasessionfileCreatetheisotropicmaterialforthecoreCreateacompositematerialusinglaminateinMSC.PatranCreate3DelementpropertysetforcorematerialCreateelementpropertyforupperlaminaCreateelementpropertyforlowerlaminaAnalyzethemodelandattachtheresultsfileVerifythestresstensoranddisplacementresults*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationbcStep1.CreateaNewDatabaseCreateanewdatabase. File/New. Enter2nd_Honeycombasthefilename. ClickOK. SelectMSC.NastranastheAnalysisCode. SelectStructuralastheAnalysisType. ClickOK. a*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep2.ImporttwoSurfacesFromanIGESFileImporttwosurfacesfromanIGESfile.File/ImportSelectIGESfromtheSource.Selectexercise7b.igs.Click–Apply-.ClickOKwhentheIGESImportSummaryappears.abcde*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationThisishowthegeometryshouldlooklikeafterimportingthefile.Step2.ImporttwoSurfacesFromanIGESFile(Cont.)*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep3.CreateaSolidFromthetwoImportedSurfacesCreateaparametricsolidusingthetwosurfaces.Geometry:Create/Solid/Surface.Select2SurfacesastheOption.UnchecktheAutoExecutetoggle.SelectSurface1astheStartingSurfaceList.SelectSurface2astheEndingSurfaceList.Click–Apply.abcdef*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep4.MeshtheSolidUsingIsoMeshMeshthegeometricsolid.Elements:Create/Mesh/Solid.SelectHexastheElemShape.SelectIsoMeshastheMesher.SelectHex8astheTopology.UnchecktheAutomaticCalculation.Enter5.0astheGlobalEdgeLengthValue.SelectSolid1astheSolidList.Click–Apply-.abcdefgh*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep5.MeshatSurfacesoftheSolidUsingIsoMeshMeshthesurfaces(atinnerandouterfreefacesofthehexelements)withshellelements.Elements:Create/Mesh/Surface.SelectQuadastheElemShape.SelectIsoMeshastheMesher.SelectQuad4astheTopology.UnchecktheAutomaticCalculation.Enter5.0astheValue.SelectSurface1astheSurfaceList.Click–Apply-.SelectSurface2astheSurfaceList.Click–Apply-.abcdefghijNotethatbothsurfacescouldhavebeenmeshedsimultaneously.*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep5.MeshatSurfacesoftheSolidUsingIsoMesh(Cont.)ShellelementSolidelement*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep6.EquivalencetheSolidandSurfaceMeshesEquivalencethesolidandsurfacemeshnodes.Elements:Equivalence/All/ToleranceCube.Click–Apply-.ab*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep7.CantileveroneendofHoneycombModelFixednodesatoneendusingasolidfaceastheapplicationregion..Loads/BCs:Create/Displacement/Nodal.EnterFixed_surfaceastheNewSetName.ClickInputData….Enter<000>astheTranslations.Enter<000>astheRotations.ClickOK.ClickSelectApplicationRegion…SelectSurfacePickingIcon.SelectSolid1.1astheSelectGeometryEntities.ClickAdd.ClickOK.Click–Apply-.abcdefghijkl*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationThenodesatsolidfaceSolid1.1areconstrained.Step7.CantileveroneendofHoneycombModel(Cont.)*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep8.ApplytheForceLoadattheFreeendoftheModelApplyloadsatfourpoints.Loads/BCs:Create/Force/Nodal.EnterLoadastheNewSetName.ClickonInputData….Enter<0.500>astheForce.ClickOK.ClickSelectApplicationRegion…abcdef*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationSelectPointPickingIcon.SelectPoint3478fromthegeometryastheSelectGeometryEntities.ClickAdd.ClickOK.abcdStep8.ApplytheForceLoadattheFreeendoftheModel(Cont.)*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationClick–Apply-.Nowthemodelhasbeenassignedaloadof0.5atfourdifferentpoints,atotalof2.aStep8.ApplytheForceLoadattheFreeendoftheModel(Cont.)*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep9.CreateMaterialPropertiesUsingaSessionFileRead(play)sessionfilematerials.ses.File/Session/Play..Selectmaterials.ses.Click–Apply-.abc*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep10.CreatetheIsotropicMaterialfortheCoreCreateamaterialtorepresentthecoreofthehoneycombstructure.Materials:Create/Isotropic/ManualInput.EnterCoreastheMaterialName.ClickInputProperties…SelectLinearElasticastheConstitutiveModel.Enter215astheElasticModulus.Enter150astheShearModulus.ClickOK.ClickApply.abcdefgh*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep11.CreateaCompositeMaterialUsingLaminateinMSC.PatranCreateaninner(upper)laminateinMSC.Patran.Materials:Create/Composite/Laminate.Enterupper_plyastheMaterialName.Clickud_t300_n5208fourtimestouploadtotheStackingSequenceDefinition.SelectOverwriteastheTextEntryMode.ClickThicknesses.Enter4(0.12)intheOverwriteThickness.ClickLoadTextIntoSpreadsheet.SelectOverwriteastheTextEntryMode.ClickOrientations.Enter-45/90/45/0intheInsertOrientations.ClickLoadTextIntoSpreadsheet.Click–Apply-.abcdefghijklfj*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationEnterlower_plyastheMaterialName.ClickonDeleteSelectedRowsmanytimessothattheStackingSequenceDefinitionbecomesempty.Selectud_t300_n5208fourtimesastheMaterial.SelectOverwriteastheTextEntryMode.ClickonThicknesses.Enter4(0.12)intheOverwriteThickesses.ClickLoadTextIntoSpreadsheet.SelectOverwriteastheTextEntryMode.ClickOrientations.Enter0/45/90/-45intheOverwriteOrientations.ClickLoadTextIntoSpreadsheet.SettheOffsetto–0.48Click–Apply-abcdefghijkmStep11.CreateaCompositeMaterialinMSC.Patran(Cont.)fjl*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep12.Create3DElementPropertysetforCoreMaterialCreateelementpropertiesfor3Dsolidcore.Properties:Create/3D/Solid.Enter3D_solidasthePropertySetName.SelectStandardFormulationastheOptions.ClickInputProperties…SelectCoreastheMaterialNamefromtheMaterialPropertySets.ClickOK.SelectSolid1fortheSelectMembers.ClickAdd.ClickApply.ef*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep13.CreateElementPropertyforUpperLaminaCreate2Delementpropertiesforpliesabovethecore.Properties:Create/2D/ShellEnter2D_upper_shellasthePropertySerName.SelectLaminateandStandardFormulationastheOptions.ClickInputProperties…Selectupper_plyastheMaterialNamefromtheMaterialPropertySets.ClickOK.SelectSurface1fortheSelectMembers.ClickAdd.ClickApply.*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationCreate2Delementpropertiesforpliesbelowthecore.Properties:Create/2D/ShellEnter2D_bottom_shellasthePropertySetName.SelectLaminateandStandardFormulationastheOptions.ClickInputProperties…Selectlower_plyastheMaterialNamefromtheMaterialPropertySets.ClickOK.SelectSurface2fortheSelectMembers.ClickAdd.ClickApply.efStep14.CreateElementPropertyforLowerLamina*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep15.AnalyzetheModelandAttachtheResultsFileRuntheanalysisandattachtheresultsfile.Analysis:Analyze/EntireModel/FullRun.ClickApply.Analysis:AccessResults/AttachXDB/ResultEntities.ClickSelectResultsFile…Select2nd_Honeycomb.ClickOK.ClickApply.abcdefg*Mar120,Workshop10,March2001WS7B-*PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationStep16.VerifytheStressTensorandDisplacementResultsCheckthedeformationandstressresults.Results:Create/QuickPlot.SelectSC1.DEFAULT,A1StaticSubcasefromtheSelectResultCases.SelectStressTensorastheSelectFringeResult.SelectLayer1,orsomeotherlayer.SelectDisplacement,TranslationalastheSelectDeformationResult.ClickApply.abcefd***************************