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https://git.salome-platform.org/gitpub/modules/smesh.git
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150 lines
3.7 KiB
Python
150 lines
3.7 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2007-2021 CEA/DEN, EDF R&D, 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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# Creer un cylindre avec un trou cylindrique excentre, decoupage en hexahedre et mailler.
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# Donnees
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# -------
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# unite: millimetre
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g_ox = 0
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g_oy = 0
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g_oz = 0
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g_cyl_rayon = 1000
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g_cyl_demiHauteur = 3000
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g_trou_rayon = 5
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g_trou_centre = 300
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g_trim = 15000
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# Construire le cylindre
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# ----------------------
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c_point = geompy.MakeVertex(g_ox, g_oy, g_oz-g_cyl_demiHauteur)
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c_dir = geompy.MakeVectorDXDYDZ(0, 0, 1)
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c_hauteur = 2*g_cyl_demiHauteur
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c_cylindre = geompy.MakeCylinder(c_point, c_dir, g_cyl_rayon, c_hauteur)
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# Trouer le cylindre par un minuscule cylindre excentre
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# -----------------------------------------------------
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t_hauteur = g_cyl_demiHauteur
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t_point = geompy.MakeVertex(g_ox-g_trou_centre, g_oy, g_oz-t_hauteur)
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t_trou = geompy.MakeCylinder(t_point, c_dir, g_trou_rayon, 2*t_hauteur)
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t_piece = geompy.MakeCut(c_cylindre, t_trou)
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# Geometrie hexahedrique
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# ======================
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# Decouper
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# --------
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h_outils = []
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h_outils.append(geompy.MakePlane(t_point, geompy.MakeVectorDXDYDZ(1, 0, 0), g_trim))
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h_outils.append(geompy.MakePlane(t_point, geompy.MakeVectorDXDYDZ(0, 1, 0), g_trim))
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h_piece = geompy.MakePartition([t_piece], h_outils, [], [], geompy.ShapeType["SOLID"])
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# Decouper pour les conditions locales
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# ------------------------------------
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l_outils = []
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l_i = 1
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l_n = 12
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l_hauteur = c_hauteur/l_n
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while l_i<l_n:
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l_outils.append(geompy.MakePlane(geompy.MakeVertex(g_ox, g_oy, g_oz-g_cyl_demiHauteur+l_i*l_hauteur), c_dir, g_trim))
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l_i = l_i+1
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piece = geompy.MakePartition([h_piece], l_outils, [], [], geompy.ShapeType["SOLID"])
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# Ajouter la piece dans l'etude
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# -----------------------------
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piece_id = geompy.addToStudy(piece, "ex14_cyl1holed")
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# Maillage
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# ========
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# Creer un maillage hexahedrique
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# ------------------------------
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hexa = smesh.Mesh(piece, "ex14_cyl1holed:hexa")
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algo = hexa.Segment()
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algo.NumberOfSegments(4)
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hexa.Quadrangle()
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hexa.Hexahedron()
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# Poser les hypotheses locales
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# ----------------------------
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m_i = 0
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m_n = 12
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m_h = c_hauteur/m_n
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m_d = [4, 6, 8, 10, 10, 9, 8, 7, 6, 5, 4, 3]
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m_x = g_ox+g_cyl_rayon
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m_y = g_oy
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m_z = g_oz-g_cyl_demiHauteur+m_h/2
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while m_i<m_n:
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m_p = geompy.MakeVertex(m_x, m_y, m_z + m_i*m_h)
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m_e = geompy.GetEdgeNearPoint(piece, m_p)
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m_a = hexa.Segment(m_e)
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m_a.NumberOfSegments(m_d[m_i])
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m_a.Propagation()
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m_i = m_i + 1
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# Calculer le maillage
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# --------------------
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hexa.Compute()
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# Update object browser
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# ---------------------
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salome.sg.updateObjBrowser()
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