MeshedRegion#

class ansys.dpf.core.meshed_region.MeshedRegion(num_nodes=None, num_elements=None, mesh=None, server=None)#

Represents a mesh from DPF.

Parameters:

num_nodes (int, optional) – Number of nodes to reserve for mesh creation. The default is None.
num_elements (int, optional) – Number of elements to reserve for mesh creation. The default is None.
mesh (ansys.grpc.dpf.meshed_region_pb2.MeshedRegion) – The default is None.
server (ansys.dpf.core.server, optional) – Server with the channel connected to the remote or local instance. The default is None, in which case an attempt is made to use the global server.

Examples

Extract a meshed region from a model.

>>> import ansys.dpf.core as dpf
>>> from ansys.dpf.core import examples
>>> model = dpf.Model(examples.find_static_rst())
>>> meshed_region = model.metadata.meshed_region

Create a meshed region from scratch (line with 3 beam elements).

>>> import ansys.dpf.core as dpf
>>> meshed_region = dpf.MeshedRegion(num_nodes=4,num_elements=3)
>>> i=0
>>> for node in meshed_region.nodes.add_nodes(4):
...     node.id = i+1
...     node.coordinates = [float(i), float(i), 0.0]
...     i=i+1
>>> i=0
>>> for element in meshed_region.elements.add_elements(3):
...     element.id=i+1
...     element.connectivity = [i, i+1]
...     element.is_beam=True #or is_solid, is_beam, is_point
...     i=i+1
>>> meshed_region.elements.add_beam_element(id=4,connectivity=[3,0])

property elements#

All elemental properties of the mesh, such as connectivity and element types.

Returns:: elements – Elements belonging to the meshed region.
Return type:: Elements

Examples

>>> import ansys.dpf.core as dpf
>>> from ansys.dpf.core import examples
>>> model = dpf.Model(examples.find_static_rst())
>>> meshed_region = model.metadata.meshed_region
>>> elements = meshed_region.elements
>>> print(elements)
DPF Elements object with 8 elements

property nodes#

All nodal properties of the mesh, such as node coordinates and nodal connectivity.

Returns:: nodes – Nodes belonging to the meshed region
Return type:: Nodes

Examples

>>> import ansys.dpf.core as dpf
>>> from ansys.dpf.core import examples
>>> model = dpf.Model(examples.find_static_rst())
>>> meshed_region = model.metadata.meshed_region
>>> nodes = meshed_region.nodes
>>> nodes.n_nodes
81

property unit#

Unit of the meshed region.

This unit is the same as the unit of the coordinates of the meshed region.

Returns:: unit
Return type:: str

property available_property_fields#

Returns a list of available property fields

Returns:: available_property_fields
Return type:: list str

property_field(property_name)#

Property field getter. It can be coordinates (field), element types (property field)…

Returns:: field_or_property_field
Return type:: core.Field or core.PropertyField

set_property_field(property_name, value)#

Property field setter. It can be coordinates (field), element types (property field)…

Parameters:

property_name (str) – property name of the field to set
value (PropertyField or Field) –

property available_named_selections#

List of available named selections.

Returns:: named_selections
Return type:: list str

named_selection(named_selection)#

Scoping containing the list of nodes or elements in the named selection.

Parameters:: named_selection (str) – Name of the named selection.
Returns:: named_selection
Return type:: Scoping

set_named_selection_scoping(named_selection_name, scoping)#

Named selection scoping setter.

Parameters:

named_selection_name (str) – named selection name
scoping (Scoping) –

deform_by(deform_by, scale_factor=1.0)#

Deforms the mesh according to a 3D vector field and an additional scale factor.

Parameters:

deform_by (Field, FieldsContainer, Result, Operator) – Used to deform the plotted mesh. Must output a unique 3D vector field. Defaults to None.
scale_factor (float, Field, FieldsContainer, optional) – Used to scale the mesh deformation. Defaults to 1.0. Can be a scalar Field (or a FieldsContainer with only one Field) to get a spatially non-homogeneous scaling.

property grid#

Unstructured grid in VTK format from PyVista.

Returns:: UnstructuredGrid of the mesh.
Return type:: pyvista.UnstructuredGrid

Examples

>>> import ansys.dpf.core as dpf
>>> from ansys.dpf.core import examples
>>> model = dpf.Model(examples.find_static_rst())
>>> meshed_region = model.metadata.meshed_region
>>> grid = meshed_region.grid

Plot this grid directly.

>>> grid.plot()

Extract the surface mesh of this grid

>>> mesh = grid.extract_surface()

plot(field_or_fields_container=None, shell_layers=None, deform_by=None, scale_factor=1.0, **kwargs)#

Plot the field or fields container on the mesh.

Parameters:

field_or_fields_container (dpf.core.Field or dpf.core.FieldsContainer) – Field or fields container to plot. The default is None.
shell_layers (core.shell_layers, optional) – Enum used to set the shell layers if the model to plot contains shell elements.
deform_by (Field, Result, Operator, optional) – Used to deform the plotted mesh. Must output a 3D vector field. Defaults to None.
scale_factor (float, optional) – Scaling factor to apply when warping the mesh. Defaults to 1.0.
**kwargs (optional) – Additional keyword arguments for the plotter. For additional keyword arguments, see help(pyvista.plot).

Examples

Plot the displacement field from an example file.

>>> import ansys.dpf.core as dpf
>>> from ansys.dpf.core import examples
>>> model = dpf.Model(examples.find_static_rst())
>>> disp = model.results.displacement()
>>> field = disp.outputs.fields_container()[0]
>>> model.metadata.meshed_region.plot(field)

deep_copy(server=None)#

Create a deep copy of the meshed region’s data on a given server.

This method is useful for passing data from one server instance to another.

Warning

Only nodes scoping and coordinates and elements scoping, connectivity, and types are copied. The eventual property field for elemental properties and named selection will not be copied.

Parameters:: server (ansys.dpf.core.server, optional) – Server with the channel connected to the remote or local instance. The default is None, in which case an attempt is made to use the global server.
Returns:: mesh_copy
Return type:: MeshedRegion

Examples

>>> import ansys.dpf.core as dpf
>>> from ansys.dpf.core import examples
>>> model = dpf.Model(examples.find_static_rst())
>>> meshed_region = model.metadata.meshed_region
>>> other_server = dpf.start_local_server(as_global=False)
>>> deep_copy = meshed_region.deep_copy(server=other_server)

field_of_properties(property_name)#

Returns the Field or PropertyField associated to a given property of the mesh

Parameters:: property_name (str, common.elemental_properties, common.nodal_properties) – Name of the property.
Returns:: properties
Return type:: Field, PropertyField

Examples

>>> import ansys.dpf.core as dpf
>>> from ansys.dpf.core import examples
>>> model = dpf.Model(examples.find_static_rst())
>>> meshed_region = model.metadata.meshed_region
>>> connectivity = meshed_region.field_of_properties(
...     dpf.common.elemental_properties.connectivity)
>>> coordinates = meshed_region.field_of_properties(dpf.common.nodal_properties.coordinates)