sfepy.mesh.mesh_tools module¶
- sfepy.mesh.mesh_tools.expand2d(mesh2d, dist, rep)[source]¶
Expand 2D planar mesh into 3D volume, convert triangular/quad mesh to tetrahedrons/hexahedrons.
- Parameters
- mesh2dMesh
The 2D mesh.
- distfloat
The elements size in the 3rd direction.
- repint
The number of elements in the 3rd direction.
- Returns
- mesh3dMesh
The 3D mesh.
- sfepy.mesh.mesh_tools.extract_edges(mesh, eps=1e-16)[source]¶
Extract outline edges of a given mesh. The outline edge is an edge for which norm(nvec_1 - nvec_2) < eps, where nvec_1 and nvec_2 are the normal vectors of the incident facets.
- Parameters
- meshMesh
The 3D or 2D mesh.
- epsfloat
The tolerance parameter of the outline edge searching algorithm.
- Returns
- mesh_outtuple
The data of the outline mesh, Mesh.from_data() format, i.e. (coors, ngroups, ed_conns, mat_ids, descs).
- sfepy.mesh.mesh_tools.merge_lines(mesh, eps=1e-18)[source]¶
Merge edges of an edge-only mesh that are in the same direction w.r.t. the tolerance eps.
- sfepy.mesh.mesh_tools.smooth_mesh(mesh, n_iter=4, lam=0.6307, mu=-0.6347, weights=None, bconstr=True, volume_corr=False)[source]¶
FE mesh smoothing.
Based on:
[1] Steven K. Boyd, Ralph Muller, Smooth surface meshing for automated finite element model generation from 3D image data, Journal of Biomechanics, Volume 39, Issue 7, 2006, Pages 1287-1295, ISSN 0021-9290, 10.1016/j.jbiomech.2005.03.006. (http://www.sciencedirect.com/science/article/pii/S0021929005001442)
- Parameters
- meshmesh
FE mesh.
- n_iterinteger, optional
Number of iteration steps.
- lamfloat, optional
Smoothing factor, see [1].
- mufloat, optional
Unshrinking factor, see [1].
- weightsarray, optional
Edge weights, see [1].
- bconstr: logical, optional
Boundary constraints, if True only surface smoothing performed.
- volume_corr: logical, optional
Correct volume after smoothing process.
- Returns
- coorsarray
Coordinates of mesh nodes.