蜂窝夹层板在patran中的建立

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1、WORKSHOP7BMODELINGHONEYCOMBWITHSOLIDANDSHELLELEMENTSWS7B-1PAT325,Workshop7B,April2007Copyright2004MSC.SoftwareCorporationProblemDescriptionUnlikethepreviousworkshopthatinvolvedmodelingthehoneycombstructureusingtheMSC.LaminateModeler,thisworkshopisusedtoshowhowtomodelthehoneycombstructureusingsolid

2、andshellelements.Solidhexahedralelementsaretobeusedtorepresentthecore,andshellelementsaretousedtorepresentthelaminatebacking.Similarconstraintsandloadingaretobeappliedtothemodel.AftertheMSC.Nastrananalysistheresultsaretobelookedat,andperhapscomparedtothoseforthepreviouslaminatemodel.SuggestedExerci

3、seStepsCreateanewdatabaseImporttwosurfacesfromanIGESFileCreateasolidfromthetwoimportedsurfacesMeshthesolidusingIsoMeshMeshatsurfacesofthesolidusingIsoMeshEquivalencethesolidandsurfacemeshesCantileveroneendofhoneycombmodelApplytheforceloadatthefreeendofthemodelCreatematerialpropertiesusingasessionfi

4、leCreatetheisotropicmaterialforthecoreCreateacompositematerialusinglaminateinMSC.PatranCreate3DelementpropertysetforcorematerialCreateelementpropertyforupperlaminaCreateelementpropertyforlowerlaminaAnalyzethemodelandattachtheresultsfileVerifythestresstensoranddisplacementresultsdefbcStep1.CreateaNe

5、wDatabaseCreateanewdatabase.File/New.Enter2nd_Honeycombasthefilename.ClickOK.SelectMSC.NastranastheAnalysisCode.SelectStructuralastheAnalysisType.ClickOK.aStep2.ImporttwoSurfacesFromanIGESFileImporttwosurfacesfromanIGESfile.File/ImportSelectIGESfromtheSource.Selectexercise7b.igs.Click–Apply-.ClickO

6、KwhentheIGESImportSummaryappears.abcdeThisishowthegeometryshouldlooklikeafterimportingthefile.Step2.ImporttwoSurfacesFromanIGESFile(Cont.)Step3.CreateaSolidFromthetwoImportedSurfacesCreateaparametricsolidusingthetwosurfaces.Geometry:Create/Solid/Surface.Select2SurfacesastheOption.UnchecktheAutoExec

7、utetoggle.SelectSurface1astheStartingSurfaceList.SelectSurface2astheEndingSurfaceList.Click–Apply.abcdefStep4.MeshtheSolidUsingIsoMeshMeshthegeometricsolid.Elements:Create/Mesh/Solid.SelectHexastheElemShape