imag, - L / 2, mesh_size, NPoint ) factory. get_lines ()): if isinstance ( line, Arc ): Zc = line. get_lines (): NLine += 1 if NLine = len ( tooth_surf. imag, - L / 2, mesh_size, NPoint ) # Draw all the lines of the tooth NLine = 0 # Number of line created for line in tooth_surf. add ( "Pyleecan" ) # Create all the points of the tooth NPoint = 0 # Number of point created for line in tooth_surf. setNumber ( "Geometry.CopyMeshingMethod", 1 ) model. setNumber ( "General.Terminal", int ( display )) gmsh. L1 # Lamination length # Start a new model gmsh. build_geometry ( sym = sym ) Zs = sym # For readibility model = gmsh. get_Zs () else : tooth_surf = lamination. Dialog box for mesh exportingįollowing formats can be used for exporting.Def gen_3D_mesh ( lamination, save_path = "Lamination.msh", sym =- 1, mesh_size = 5e-3, user_mesh_dict = None, is_rect = False, Nlayer = 20, display = True, ): """Draw 3D mesh of the lamination Parameters - lamination: LamSlot Lamintation with slot to draw save_path: str Path to save the msh result file sym : int Number of symmetry to apply mesh_size : float Size of the mesh user_mesh_dict : dict To enforce the number of elements on the lines is_rect : bool To use rectangular elements Nlayer : int Number of mesh layer on Z axis display : bool To display gmsh logs Returns - None """ # The defaut symmetry is Zs => We draw only one tooth if sym = - 1 : tooth_surf = lamination. If the mesh has no problem, select it in the model tree and export it with "Export mesh". Now you can see the generated mesh clearly.
Then select - in menu bar to set 3D view wireframe display mode. Select the meshed solid on model tree and type space key to hide it. Set paramters in the dialog box and click OK to create mesh. Max element size=0 (=Auto) Meshing=Automatic The angle threshold used to divide surfaces. The smaller the size, the finer the mesh. Meshing method (Adaptive, Delaunay, etc.).
#Gmsh 3d mesh tutorial download#
Set the of the dialog box to the executable file in the FreeCAD installation folder (for example, "C:¥Program Files¥FreeCAD 0.19¥bin¥gmsh.exe" by default on Windows) or the executable file downloaded from the Gmsh download site. Whether meshes will be arranged like hexahedral.Įnable second order elements Enable quad dominantįor gmsh mesher, you should specify the Gmsh executable to be used at first. Whether second order elments will be generated. Whether optimization of surface shape will be done. If this parameter is larger, meshes becomes finer. If this parameter is smaller, meshes becomes finer. If you want to customize parameters, select "User defined". Maximum Edge length=10.0 Maximum Edge length=5.0 Maximum Edge length=2.0ĭegree of mesh fineness.
Surface deviation=0.1 Surface deviation=0.01 Set segments to meshes depending on shape colors. Meshes to be created and the parameters of each mesher are as follow. Mesher that can be used are "Standard", "Mefisto", "Netgen" and "gmsh".
Then select the mesher in the tabs of the dialog box and set each parameter. Select the shape in model tree and run "Mesh from shape" to show a dialog box as following. Switch workbench to Mesh Design wrokbench. Create new document and create a shape to be meshed.