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https://git.salome-platform.org/gitpub/modules/smesh.git
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211 lines
5.9 KiB
Python
211 lines
5.9 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2007-2024 CEA, EDF, OPEN CASCADE
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#
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# Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
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# CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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#
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# =======================================
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#
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import salome
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salome.salome_init()
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import GEOM
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from salome.geom import geomBuilder
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geompy = geomBuilder.New()
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import SMESH, SALOMEDS
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from salome.smesh import smeshBuilder
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smesh = smeshBuilder.New()
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# Geometrie
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# =========
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# Construire avec des hexahedres une piece faite de 2 cylindres de diametre different
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# et dont les axes se coupent orthogonalement, puis mailler.
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# Valeurs
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# -------
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cx = 0
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cy = 0
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cz = 0
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g_rayon = 100.0
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g_hauteur = 500
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p_rayon = 50.0
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p_hauteur = 500
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g_trim = 1000
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# Gros cylindre
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# -------------
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cpd = []
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g_base = geompy.MakeVertex(cx, cy, cz)
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g_dir = geompy.MakeVectorDXDYDZ(0, 0, 1)
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t_hauteur = p_rayon+10.0
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g_cyl = geompy.MakeCylinder(g_base, g_dir, g_rayon, g_hauteur)
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g_coupe = geompy.MakeVectorDXDYDZ(1, 0, 0)
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g_tools = []
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g_tools.append(geompy.MakePlane(geompy.MakeVertex(cx+t_hauteur, cy, cz), g_coupe, g_trim))
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g_tools.append(geompy.MakePlane(geompy.MakeVertex(cx-t_hauteur, cy, cz), g_coupe, g_trim))
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g_partie = geompy.MakePartition([g_cyl], g_tools, [], [], geompy.ShapeType["SOLID"])
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g_bas, g_centre, g_haut = geompy.SubShapeAllSorted(g_partie, geompy.ShapeType["SOLID"])
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# Partie basse du gros cylindre
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# -----------------------------
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b_hauteur = 10
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b_base = 20
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b_boite = geompy.MakeBox(cx-t_hauteur, cy-b_base, cz, cx-t_hauteur-b_hauteur, cy+b_base, cz+g_hauteur)
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cpd.append(b_boite)
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b_cyl = geompy.MakeCut(g_bas, b_boite)
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b_tools = []
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b_tools.append(geompy.MakePlane(geompy.MakeVertex(cx-t_hauteur-b_hauteur, cy+b_base, cz), geompy.MakeVectorDXDYDZ( 1, 1, 0), g_trim))
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b_tools.append(geompy.MakePlane(geompy.MakeVertex(cx-t_hauteur-b_hauteur, cy-b_base, cz), geompy.MakeVectorDXDYDZ(-1, 1, 0), g_trim))
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b_partie = geompy.MakePartition([b_cyl], b_tools, [], [], geompy.ShapeType["SOLID"])
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b_element = geompy.SubShapeAll(b_partie, geompy.ShapeType["SOLID"])
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cpd = cpd + b_element
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# Partie haute du gros cylindre
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# -----------------------------
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h_plan = geompy.MakePlane(g_base, g_coupe, g_trim)
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cpd.append(geompy.MakeMirrorByPlane(b_boite, h_plan))
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for h in b_element:
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h_symetrie = geompy.MakeMirrorByPlane(h, h_plan)
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cpd.append(h_symetrie)
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# Petit cylindre
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# --------------
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z_arete = p_rayon/2
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x_arete = z_arete*t_hauteur*2/g_hauteur
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px = cx-x_arete
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py = cy-1.5*g_rayon
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pz = cz+g_hauteur/2
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p_base = geompy.MakeVertex(cx, py, pz)
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p_dir = geompy.MakeVectorDXDYDZ(0, 1, 0)
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p_cyl = geompy.MakeCylinder(p_base, p_dir, p_rayon, p_hauteur)
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p_boite = geompy.MakeBox(px, py, pz-z_arete, cx+x_arete, py+p_hauteur, pz+z_arete)
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# Partie interieure du petit cylindre
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# -----------------------------------
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i_cyl = geompy.MakeCommon(p_cyl, g_cyl)
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i_tuyau = geompy.MakeCut(i_cyl, p_boite)
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i_boite = geompy.MakeCommon(p_boite, g_cyl)
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# Partie exterieure du petit cylindre
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# -----------------------------------
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e_cyl0 = geompy.MakeCut(p_cyl, g_cyl)
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e_cyl = geompy.SubShapeAllSorted(e_cyl0, geompy.ShapeType["SOLID"])
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e_tuyau = geompy.MakeCut(e_cyl[1], p_boite)
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e_boite0 = geompy.MakeCut(p_boite, g_cyl)
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e_boite = geompy.SubShapeAllSorted(e_boite0, geompy.ShapeType["SOLID"])
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cpd.append(e_boite[1])
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# Partie centrale du gros cylindre
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# --------------------------------
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c_cyl = geompy.MakeCut(g_centre, p_cyl)
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# Partitionner
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# ------------
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p_tools = []
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p_tools.append(geompy.MakePlane(geompy.MakeVertex(px, py, pz-z_arete), geompy.MakeVectorDXDYDZ(-z_arete, 0, x_arete), g_trim))
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p_tools.append(geompy.MakePlane(geompy.MakeVertex(px, py, pz+z_arete), geompy.MakeVectorDXDYDZ( z_arete, 0, x_arete), g_trim))
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p_partie = geompy.MakePartition([e_tuyau], p_tools, [], [], geompy.ShapeType["SOLID"])
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p_element = geompy.SubShapeAll(p_partie, geompy.ShapeType["SOLID"])
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cpd = cpd + p_element
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q_partie = geompy.MakePartition([i_tuyau, c_cyl], p_tools, [], [], geompy.ShapeType["SOLID"])
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q_element = geompy.SubShapeAll(q_partie, geompy.ShapeType["SOLID"])
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q_element = q_element + [i_boite]
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q_tools = []
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q_tools.append(geompy.MakePlane(geompy.MakeVertex(cx, cy-b_base, cz), geompy.MakeVectorDXDYDZ(0, 1, 0), g_trim))
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q_tools.append(geompy.MakePlane(geompy.MakeVertex(cx, cy+b_base, cz), geompy.MakeVectorDXDYDZ(0, 1, 0), g_trim))
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r_element = []
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for e in q_element:
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r_partie = geompy.MakePartition([e], q_tools, [], [], geompy.ShapeType["SOLID"])
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r_element = r_element + geompy.SubShapeAll(r_partie, geompy.ShapeType["SOLID"])
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cpd = cpd + r_element
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# Compound
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# --------
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piece = geompy.RemoveExtraEdges(geompy.MakeCompound(cpd), True)
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# Ajouter la piece dans l'etude
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# -----------------------------
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piece_id = geompy.addToStudy(piece, "ex15_cyl2geometry")
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# Meshing
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# =======
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# Create a hexahedral mesh
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# ------------------------
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hexa = smesh.Mesh(piece, "ex15_cyl2geometry:hexa")
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algo = hexa.Segment()
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algo.NumberOfSegments(12)
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hexa.Quadrangle()
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hexa.Hexahedron()
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# Mesh calculus
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# -------------
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isDone = hexa.Compute()
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if not isDone:
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raise Exception("Error when computing Mesh")
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# Update object browser
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# ---------------------
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salome.sg.updateObjBrowser()
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