hekie做弹簧划分网格如题bigbird在台湾论坛上的题目，下图是我做的，感觉有意思。做出部分也可以上传，积分鼓励大家思考一下，试着做一下可以提示一下先造线，再由面沿线生成体雨人我在HELP中COPY的一点有关内容，与该题有关，希望和我一样没用过该命令的同学，看过后，都能试着做一下。我也在试着做。我想这个命令做螺纹时同样适用。VEXT,NA1,NA2,NINC,DX,DY,DZ,RX,RY,RZ—Generatesadditionalvolumesbyextrudingareas.PREP7:VolumesMPMESTDYPREMEHFLPPEDNA1,NA2,NINCSetofareas(NA1toNA2instepsofNINC)thatdefinesthepatterntobeextruded.NA2defaultstoNA1,NINCdefaultsto1.IfNA1=ALL,NA2andNINCareignoredandthepatternisdefinedbyallselectedareas.IfNA1=P,graphicalpickingisenabledandallremainingcommandfieldsareignored(validonlyintheGUI).AcomponentnamemayalsobesubstitutedforNA1(NA2andNINCareignored).DX,DY,DZIncrementstobeappliedtotheX,Y,andZkeypointcoordinatesintheactivecoordinatesystem(DR,Dθ,DZforcylindrical;DR,Dθ,DΦforspherical).RX,RY,RZScalefactorstobeappliedtotheX,Y,andZkeypointcoordinatesintheactivecoordinatesystem(RR,Rθ,RZforcylindrical;RR,Rθ,RΦforspherical).NotethattheRθandRΦscalefactorsareinterpretedasangularoffsets.Forexample,ifCSYS=1,RX,RY,RZinputof(1.5,10,3)wouldscalethespecifiedkeypoints1.5timesintheradialand3timesintheZdirection,whileaddinganoffsetof10degreestothekeypoints.Zero,blank,ornegativescalefactorvaluesareassumedtobe1.0.Zeroorblankangularoffsetshavenoeffect.NotesGeneratesadditionalvolumes(andtheircorrespondingkeypoints,lines,andareas)byextrudingandscalingapatternofareasintheactivecoordinatesystem.IfelementattributeshavebeenassociatedwiththeinputareaviatheAATTcommand,theoppositeareageneratedbytheVEXToperationwillalsohavethoseattributes(i.e.,theelementattributesfromtheinputareaarecopiedtotheoppositearea).Notethatonlytheareaoppositetheinputareawillhavethesameattributesastheinputarea;theareasadjacenttotheinputareawillnot.Iftheareasaremeshedorbelongtomeshedvolumes,a3-Dmeshcanbeextrudedwiththiscommand.NotethattheNDIVargumentontheESIZEcommandshouldbesetbeforeextrudingthemeshedareas.Scalingoftheinputareas,ifspecified,isperformedfirst,followedbytheextrusion.Inanon-Cartesiancoordinatesystem,theVEXTcommandlocatestheendfaceofthevolumebasedontheactivecoordinatesystem.However,theextrusionismadealongastraightlinebetweentheendfaces.Notethatsolidmodelinginatoroidalcoordinatesystemisnotrecommended.Caution:UseoftheVEXTcommandcanproduceunexpectedresultswhenoperatinginanon-Cartesiancoordinatesystem.Foradetaileddescriptionofthepossibleproblemsthatmayoccur,seeSolidModelingintheANSYSModelingandMeshingGuide.Iftheareathatisbeingextruded(usedasthepatternfortheresultingvolume)withtheVROTAT,VEXT,VOFFST,orVDRAGcommandismeshed(orbelongstoameshedvolume),thatmeshwillbeusedasapatternforthemeshofthevolumethatiscreated(seeExtrudingMeshedAreas).(ComparethesecommandstotheVSWEEPcommand,whichisdescribedinSweepingVolumes.)Ifyouareinterestedinextrudingyourmesh,followthesesteps:Meshtheareathatistobeextruded,dragged,offset,orrotated(usingMESH200elements).Selectanappropriate3-Delementtype[ET](matchtheshapeandnumberofnodestotheMESH200element).Activatetheselection[TYPE].Specifythedesirednumberofelementdivisionsintheextruded,rotated,oroffsetdirection(NDIVargumentonESIZEcommand).IfusingVDRAG,specifythenumberofelementdivisionsonthedragpathline(s)(LESIZEorESIZE,,NDIV).IssuetheVROTAT,VEXT,VOFFST,orVDRAGcommand.Concatenatedareas[ACCAT]orareast...
