Patran for Advanced Users Exercise_09_vector_swee

PATRAN302ExerciseWorkbook-Release8.09-1LESSON9GeneratingaHexMeshUsingVectorSweepObjectives:■ImportageometricmodelfromanIGESfileandcreatesurfacesinthequartermodel.■Createmeshesforthesurfacesandcreateavectorfield.■Usingsweepoption,createsolidfiniteelementsbyextrudingandusingthevectorfield.9-2PATRAN302ExerciseWorkbook-Release8.0LESSON9GeneratingaHexMeshUsingVectorSweepPATRAN302ExerciseWorkbook-Release8.09-3ModelDescription:InthisexerciseyouwillreadinamodelfromanIGESfileintoanewMSC/PATRANdatabase.Thenyouwillcreatesurfacesforthelowerrightquarterofthemodel.Thisexercisewillshowyouanalternativetocreatingsolidfiniteelementsfromsolidgeometry.Insteadofcreatingsolidsandthenmeshingthem,youcanmeshsurfacesandthensweepingthesurfaceelementstomakesolidfiniteelements.Tocreatethesolidfiniteelements,youwillusetheSweepoptionthatisavailableundertheFiniteElementsmenu.Usingthequadelementscreatedonthesurface,youwillcreatethesolidmodelbyusingextrusionandavectorfield.Theviewofthequartermodelisasshownhere.SuggestedExerciseSteps:■StartupMSC/PATRANandopenanewdatabasecalledcon_rod.db.■DisplayQuickPickmenuforquickdisplaymanipulationsthroughout9-4PATRAN302ExerciseWorkbook-Release8.0theexercise.■ImportIGESfilecalledcon_rod_new.igs.■Createacurvetobreakacoupleofexistingcurvestocreatethequartermodel.■Breakacurveusinganintersectionpointanddeletetheouterhalf.■Changethegeometricshrinkto0.20tohelpgroupingeasier.■Makeagroupcalledquarter_modelthatcontainsthelowerrightquarterofthemodel.■Setthegeometricshrinkbackto0.0.■Editacornercurvebeforecreatingtrimmedsurfacessothatthemesheswillbesimpler.■Completethequartermodelbycreatingadditionalcurves.■Createtrimmedsurfacesusingtheautochainfeature.■Createmeshseedsalongthecurvededgesorentities.■CreateQuad4meshesforthesurfaces.■Createliststheassociatefiniteelementstothetrimmedsurfaces.■Sweepthemeshesintosolidmeshesusingdirectionalvectorsandthelists.■Createavectorspatialfield.■CompletethesolidmeshesbysweepingtheremainingQuad4elementsusingthevectorfield.■Equivalencetheelementstoeliminateduplicatenodes.■Verifythefiniteelements’boundaries.■ClosethedatabaseandquitMSC/PATRANtoendtheexercise.LESSON9GeneratingaHexMeshUsingVectorSweepPATRAN302ExerciseWorkbook-Release8.09-5Files:Allthefilesusedinthisexercisearelistedbelow.Eachlistingincludesthefile,whereitoriginated,itsformat(text/binary)andsummaryinformationastohowitrelatestothisexercise.FileSupplied/CreatedFormatDescriptioncon_rod_new.igsSuppliedtextThisistheIGESfilethatcontainsthebasicconnectingrodgeometry.Thedatainthisfilewillbeusedtocreatetheallhexquartermodel.con_rod.dbCreatedbinaryThisisaMSC/PATRANdatabasewhichiscreatedinthisexerciseandisusedtoimporttheIGESfileandcreatethehexmodel.ExerciseProcedures:1.StartupMSC/PATRANbytypingp3attheshellprompt.Openupanewdatabaseandcallitcon_rod.db.IntheNewModelPreferenceformsetthefollowing:2.ImporttheIGESfilecon_rod_new.igs.File/New...NewDatabaseName:con_rod.dbOKTolerance:◆BasedonModelApproximateMaximumModelDimension:200AnalysisCode:MSC/NASTRANAnalysisType:StructuralOKFile/Import...OpenaNewDatabaseImportanIGESfileTurnoffLabelsandChangeViews9-6PATRAN302ExerciseWorkbook-Release8.0AnwindowcontainingthesummaryoftheIGESfilewillappear.ClickOKtoimporttheentitiesfromthefile.3.Ifthedisplayseemstobeemptyatthistime.FromyourToolbar,selecttheiconsbelowtogetagoodideaofthemodel.Thedisplayshouldbesimilartotheonebelow:4.Tocreatethelowerrightquarterofthemodel,wewilleditthemodel.Createacurvetointersectthetwocurves.Object:ModelSource:IGESImportFile:con_rod_new.igsApply◆GeometryAction:CreateObject:CurveMethod:XYZVectorCoordinatesList6000❑AutoExecuteTurnoffLabelsandChangeViewsFitViewIsoView1XYZCreateaCurveLESSON9GeneratingaHexMeshUsingVectorSweepPATRAN302ExerciseWorkbook-Release8.09-75.Breakcurves27and28usingtheintersectionpointswiththepreviouslycreatedcurve43.OriginCoordinatesList[01250]Apply◆GeometryAction:EditObject:CurveMethod:BreakOption:Point■DeleteOriginalSurfaces■AutoExecuteCurveListCurve27BreakPointListseebelowXYZBreakthesecurves(27and28)Usethiscurve(43)tobreakthetwocurvesattheintersectionpointsPoint46BreakCurvesattheIntersectionPointBreakaCurveusingaPoint9-8PATRAN302ExerciseWorkbook-Release8.0ClickinthedataboxandaSelectMenuappearsbesidetheGeometrymenu.Picktheintersectioniconandthemenuchanges.Pickthecurveiconandthenselectthefirstandsecondintersectingcurvesintheviewport.ClickYeswhenaskedifyouwanttodeletetheoriginalcurves.Repeattheprocedureswithcurve28.6.Nowbreakcurve43usingtheinsidepointcreatedattheintersections.ClickYeswhenaskedifyouwanttodeletetheoriginalcurves.Ofthetwocurvescreated,deletetheoneontheright.7.ChangethegeometricshrinkusingDisplay/Geometry...optiontomakepickingtheentitieseasier.■DeleteOriginalCurves■AutoExecuteCurveListCurve43BreakPointListPoint46Action:DeleteObject:CurveCurveListCurve49ApplyDisplay/Geometry...GeometricShrink0.20ApplyCancelBreakaCurveusingaPointChangetheGeometricShrinkLESSON9GeneratingaHexMeshUsingVectorSweepPATRAN302ExerciseWorkbook-Release8.09-9Thefollowingiswhatthedisplayshouldlooklike.FromtheToolbarmenu,selec