03 mesh generation外语英文电子书

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1、Meshing:assigningsizesGENERATINGTHEMESH.ANEXAMPLEASSIGNINGELEMENTSIZESFORGENERATINGTHEMESHTheobjectiveofthisexampleistomeshamechanicalpieceusingthevariousoptionsinGiDforassigningthesizesoftheelements.Inthisexampleameshisgeneratedforeachofthefollowingtypesofsizeassignmen

2、tmethods:·Assigningsizesaroundpoints·Assigningsizesaroundlines·Assigningsizesonsurfaces·AssigningsizeswithChordalError24Meshing:assigningsizesTABLEOFCONTENTS1.INTRODUCTION...................................................................................................

3、......................................261.1.READINGTHEINITIALFILE....................................................................................................................262.ELEMENT-SIZEASSIGNMENTMETHODS........................................................

4、...........................272.1.ASSIGNMENTUSINGDEFAULTOPTIONS..............................................................................................272.2.ASSIGNMENTAROUNDPOINTS......................................................................................

5、.......................282.3.ASSIGNMENTAROUNDLINES................................................................................................................312.4.ASSIGNMENTONSURFACES..................................................................................

6、................................322.5.ASSIGNMENTWITHMAXIMUMCHORDALERROR.............................................................................3325Meshing:assigningsizes1.INTRODUCTIONInordertocarryoutthisexample,startfromthefile“ToMesh1.gid”.Thisfilecontainsageomet

7、rythatwillbemeshedusingfourdifferentmethods,eachmethodresultinginanincreasednumberofelementsincertainzones.1.1.Readingtheinitialfile1.IntheFiles->Readmenu,Selectthefile“ToMesh.gid”andclickOpen.2.Thegeometryappearsonthescreen.Itisasetofsurfaces.3.SelectRenderàFlatlightin

8、gfromthemousemenu1.4.SelectRotateàTrackballfromthemousemenu.(ThistoolisalsoavailablewithintheGiDToolbox.)Makes