Femap_v10.2_Meshing Toolbox教程

Femapv10.2UpdateTraining–TheMeshingToolbox1TheMeshingToolboxIntroductionInthisexercise,youwillfamiliarizeyourselfwiththenewcontrolsavailableintheMeshingToolbox:FeatureEditingGeometryEditingMeshSurfaceYouwillalsouseotherMeshingToolboxcontrolstocompletethisexercise.Femapv10.2UpdateTraining–TheMeshingToolbox2Step1:OpentheFemapmodelandmodifythetwoholesontherightfaceofthepart.StartFEMAPv10.2andimportaFEMAPNeutralFile.SelecttheFile,Import,FEMAPNeutralcommand.Selectthefile,Fitting.NEUClickOKtoacceptthedefaultoptionsintheNeutralFileReadOptionsdialogbox.TheresultingFemapmodelshouldappearasbelow.IftheMeshingToolboxisnotactivated,openitbyclickingontheMeshingicononthePanestoolbar.Note:InFemapv10.2therearetwonewFemapPreferenceoptionsfortheMeshingToolboxundertheUserInterfaceTab:ExpandActiveToolOnlyandasettingtoselectbetweenAutoRemesh,TrackChangesorDisableRemesh.Femapv10.2UpdateTraining–TheMeshingToolbox3ActivetheFeatureEditingcontrols.ClickontheFeatureEditingcontroltoexpandit.IfthecontrolisnotshownintheMeshingToolbox,youmustselecttheToggleToolsiconandenabletheFeatureEditingcontrol.Changethediameterofthetwoholesontherightfaceofthepartfromtheircurrentdiameterof5(mm)to7.5.WiththeSelectionMethodsettoFeatureEdges,clicktheResizeHolebutton.EnteraDiameterof7.5.WiththeRemeshModessettingofAutoRemeshenabled,clicktheDialogSelecticonontheMeshingToolbox’scontroltoolsmenu.Selectonecurveoneachofthetwoholesonthefrontfaceofthepart,thenclickOKtoconfirmyourselection.Femapv10.2UpdateTraining–TheMeshingToolbox4Notehowthesizeoftheholeshasbeenincreasedandthesurfacehasbeenre-meshed.HoweverthemeshsizeisbasedonthedefaultmeshsizeoftheFemapmodel,soyouwillneedtoupdatethedefaultmeshsizeforyourmodelto7.5tomatchtheoriginalmeshsizeofthesurfaces.TurnoffdisplayofthenodesusingtheViewNodesToggleontheEntityDisplaytoolbar.UpdatethedefaultmeshsizeoftheFemapmodel.SelectthecommandMesh,MeshControl,DefaultSize.SettheSizeto7.5andclickOK.Femapv10.2UpdateTraining–TheMeshingToolbox5UsetheMeshSurfacecontrolstoremeshthesurfacetothedefaultsize.ClicktheMeshSurfacecontrolintheMeshingToolbox.SelecttheOffbuttonforMeshSizingandsettheMeshingMethodtoFreeMesh.ClicktheSelecticonontheMeshingToolbox’scontroltoolsmenu.Selectthesurfaceonthepartwiththetwoholes.Notehowthesurfacehasbeenre-meshedwiththedefaultmeshsize.SaveyourFemapmodel.SaveyourmodelasFitting-modified.modfem.Femapv10.2UpdateTraining–TheMeshingToolbox6Step2:Extendtheleftedgeofthepartandmovetheposttothecenteroftheleftflatface.Reorientandzoomthedisplaysothattheleftflatsurfaceandpostareclearlyvisible.SelecttheGeometryEditingcontrolintheMeshingToolbox.SettheOperationtoExtend.SetExtendShapetoLinear.SetExtendToasDistance.ClicktheMeasureiconintheExtendDistancefield.Femapv10.2UpdateTraining–TheMeshingToolbox7SelectthefrontleftcorneroftheflatsurfaceastheLocationtoMeasureFrom.YoushouldsetyoursnapmodetoSnaptoPointasyouwillneedthistohelpmovethepost.SelectthefrontrightcorneroftheflatsurfaceastheLocationtoMeasureTo.NotethattheExtendDistancevalueissettothecurrentlengthoftheedge,101.Femapv10.2UpdateTraining–TheMeshingToolbox8ForthevalueofExtendDistance,modifytheentrytoshow125-101.ClicktheSelecticonontheMeshingToolbox’stoolbar.Selecttheleftedgeoftheflatsurface.Notehowthesurfacehasbeenextendedandre-meshed.Movethepositionoftheposttotheright.Thiswilldemonstratethatthetranslationmustmaintaintopologyofthepart.SelecttheFeatureEditingcontrolintheMeshingToolbox.SettheSelectionMethodtoSurface.SettheOperationtoTranslateSurface(s).ClicktheSelectVectoriconintheVectortoMoveAlongfield.Femapv10.2UpdateTraining–TheMeshingToolbox9IntheVectorLocateVectordialogbox,settheMethodtoGlobalAxis.SettheDirectiontoPositiveandXAxis.SettheLengthto1.ClickOKtosetthevectoranddistance.IntheDistancefieldinundertheFeatureEditingcontrol,enter60.ClicktheDialogSelecticonontheMeshingToolbox’scontrol.Selectthetwohalfcylindersandsurfacesforthefilletsatthebaseofthepost.Femapv10.2UpdateTraining–TheMeshingToolbox10Notehowthepostitsblendsonthebottomofthepostdonotextenddowntotheintersectionwiththecurvedfacesonthebottomofthepart.ThisisanexampleofhowtheFeatureEditingtoolcannotchangethetopologyofthepart.SelecttheUndocommanduntilthepostisreturnedtoitspriorposition.Femapv10.2UpdateTraining–TheMeshingToolbox11Movetheposttoitscorrectpositiononcenteroftheleftflatface.AgainintheFeatureEditingcontrol,clicktheSelectVectoricon.SettheMethodtoLocateintheVectorGlobalAxisdialogbox.PlaceyourcursorintoanyoftheBaseX,Y,orZfieldsandpresstheCtrl+zhotkeytochangetheMethodtoCenter.Selectoneofthetwocurvesonthefilletatthebaseofthepost.Femapv10.2UpdateTraining–TheMeshingToolbox12PlaceyourcursorintoanyoftheTipX,Y,orZfieldsandpresstheCtrl+zhotkeytochangetheMethodtoBetween.Selectthetwooppositecornerpointsoftheflatsurface.Leavethevalueof%FromPt1as50.DisabletheDistanceoptionintheFeatureEditingcontrol.Ifyoufailtodisablethisoption,thedistanceinthisfieldwilloverridethevaluesetbytheVectortoMoveAlongfieldandwilluseaunitvectoralongdefinedbytheVectortoMoveAlongdefinitionandthevalu