Hello, Thank you very much for you answer. This is logical but this is not a solution for my task.
The end task I want achieve is to mesh a surface, with some nodes located at some given positions. These nodes may be located on the surface boundary (on the lines) as well as in the middle of the surface. I need these nodes for the FE-calculation to assign them with some boundary conditions (load ...etc). As far as the surface is a plane surface, I have no problem to do that (see please the .geo file below). How can I do that for surfaces, which are not plane any more? Of course I can define many and many "Ruled surfaces" limited with four lines. But the structure I want to mesh is an industrial stucture with a complex geometry, so that it will be too difficult and time-consuming to use these method. The number of lines for defintion of a "Ruled surfaces" is limited to four. May be there is a way to force the mesh to have nodes coincident with intermediary points of the four splines (or lines) defining the ruled surface? I hope, that despite my english level, I am clear enough to make you understanding my question. Thank you very much for your attention. Kind regards Gérard Fleury -----Message d'origine----- De : Vazquez Sabariego Ruth [mailto:[email protected]] Envoyé : vendredi 29 mai 2009 09:38 À : [email protected] Cc : [email protected] Objet : Re: [Gmsh] Coïncidence noeuds/points You must split your line in two: lg=20; Point(1) = {-775.5, 0, 0, lg}; Point(2) = {-775.5+100., 0, 40, lg}; Point(3) = {-775.5, 0, 402.5, lg}; Line(1) = {1,2}; Line(2) = {2,3}; Regards, Ruth > Bonjour, > comment ne pas commencer par vous féliciciter sur les fonctionnalités > de Gmsh!!! > Ma question est basique. > Je souhaite mailler par exemple une ligne contenant 3 points. > Mon fichier géométrie est donc: > > lg=20; > > Point(1) = {-775.5, 0, 0, lg}; > Point(2) = {-775.5+100., 0, 40, lg}; > Point(3) = {-775.5, 0, 402.5, lg}; > > Line(1) = {1,2,3}; > > Or, quand je maille, la ligne de maillage, constituée des éléments 1D ne > passe pas par le point 2, point intermédiaire. > Existe-t'il une option pour imposer qu'un noeud, relié aux éléments 1D, > soit > coïncident avec le point 2. > > Merci pour votre réponse. > Cordialement > Gérard Fleury > > > _______________________________________________ > gmsh mailing list > [email protected] > http://www.geuz.org/mailman/listinfo/gmsh >
Cal_SD_1.geo
Description: Binary data
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