sfepy.discrete.fem.fea module¶
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class
sfepy.discrete.fem.fea.
Approximation
(name, interp, region, ig, is_surface=False)[source]¶ -
clear_qp_base
()¶ Remove cached quadrature points and base functions.
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create_bqp
(region_name, integral)¶
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describe_geometry
(field, gtype, region, integral, return_mapping=False)¶ Compute jacobians, element volumes and base function derivatives for Volume-type geometries (volume mappings), and jacobians, normals and base function derivatives for Surface-type geometries (surface mappings).
Notes
- volume mappings can be defined on a part of an element group, although the field has to be defined always on the whole group.
- surface mappings are defined on the surface region
- surface mappings require field order to be > 0
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eval_extra_coor
(coors, mesh_coors)¶ Compute coordinates of extra nodes.
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get_base
(key, derivative, integral, iels=None, from_geometry=False, base_only=True)¶
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get_connectivity
(region, integration, is_trace=False)¶ Return the DOF connectivity for the given geometry type.
Parameters: region : Region instance
The region, used to index surface and volume connectivities.
integration : one of (‘volume’, ‘plate’, ‘surface’, ‘surface_extra’)
The term integration type.
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get_poly_space
(key, from_geometry=False)¶ Get the polynomial space.
Parameters: key : ‘v’ or ‘s?’
The key denoting volume or surface.
from_geometry : bool
If True, return the polynomial space for affine geometrical interpolation.
Returns: ps : PolySpace instance
The polynomial space.
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get_qp
(key, integral)¶ Get quadrature points and weights corresponding to the given key and integral. The key is ‘v’ or ‘s#’, where # is the number of face vertices.
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setup_point_data
(field, region)¶
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setup_surface_data
(region)¶ nodes[leconn] == econn
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class
sfepy.discrete.fem.fea.
DiscontinuousApproximation
(name, interp, region, ig, is_surface=False)[source]¶ -
eval_extra_coor
(coors, mesh_coors)¶ Compute coordinates of extra nodes. For discontinuous approximations, all nodes are treated as extra.
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class
sfepy.discrete.fem.fea.
Interpolant
(name, gel, space='H1', base='lagrange', approx_order=1, force_bubble=False)[source]¶ A simple wrapper around PolySpace.
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class
sfepy.discrete.fem.fea.
SurfaceApproximation
(name, interp, region, ig)[source]¶ -
get_qp
(key, integral)¶ Get quadrature points and weights corresponding to the given key and integral. The key is ‘s#’, where # is the number of face vertices.
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class
sfepy.discrete.fem.fea.
SurfaceInterpolant
(name, gel, space='H1', base='lagrange', approx_order=1, force_bubble=False)[source]¶ Like Interpolant, but for use with SurfaceField and SurfaceApproximation.