Part¶

Class for handling Part data.

class qd.cae.dyna.QD_Part¶

Methods

`get_element_ids`([element_filter])	Get the ids of the elements belonging to the part.
`get_element_node_ids`(element_type, nNodes)	Get the node ids of all the elements belonging to the part.
`get_element_node_indexes`(element_type, nNodes)	Get the node indexes of all respective elements.
`get_elements`([element_filter])	Get the elements of the part.
`get_id`()	Get the id of the part.
`get_nElements`()	Get the number of elements in the part.
`get_nNodes`()	Get the number of nodes in the part.
`get_name`()	Get the name of the part.
`get_node_ids`()	Get the unique node ids of the part.
`get_node_indexes`()	Get the unique node indexes of the part.
`get_nodes`()	Get the nodes of the part.
`plot`(self[, iTimestep, element_result, …])	Plot the Part, currently shells only!

get_element_ids(element_filter = Element.none)¶

Get the ids of the elements belonging to the part.

Parameters

element_filterElement.type: optional filter for elements

Returns

element_idsnp.ndarray: ids of the elements

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> part.get_element_ids().shape
(9631,)
>>> # get only beams
>>> part.get_element_ids(Element.beam).shape
(0,)
>>> # oops no beams :P

get_element_node_ids(element_type, nNodes)¶

Get the node ids of all the elements belonging to the part.

Parameters

element_typeElement.type: Element type. May be beam, shell or solid.
nNodesint: number of nodes (e.g. 3 for tria with Element.shell)

Returns

element_node_idsnp.ndarray: every row contains the node ids for every element

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> tria_node_ids = part.get_element_node_ids(Element.shell, nNodes=3)
>>> tria_node_ids[0]
array([ 102,  109,   98,   99])

get_element_node_indexes(element_type, nNodes)¶

Get the node indexes of all respective elements.

Parameters

element_typeElement.type: Element type. May be beam, shell or solid.
nNodesint: number of nodes (e.g. 3 for tria with Element.shell)

Returns

element_node_indexesnp.ndarray: every row contains the node indexes for every element

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> tria_node_indexes = part.get_element_node_ids(Element.shell, nNodes=3)
>>> tria_node_indexes[0]
array([ 347,  354,  343,  344])

get_elements(element_filter=Element.none)¶

Get the elements of the part.

Parameters

element_filterElement.type: Optional element type filter. May be beam, shell or solid.

Returns

elementslist(Element): list of Elements

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> len( part.get_elements() )
49123
>>> len( part.get_elements(Element.shell) )
45123

get_id()¶

Get the id of the part.

Returns

idint: id of the part

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> part.get_id()
1

get_nElements()¶

Get the number of elements in the part.

Returns

nElementsint: number of elements

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> part.get_nElements()
8945

get_nNodes()¶

Get the number of nodes in the part.

Returns

nNodesint: number of nodes

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> part.get_nNodes()
9115

get_name()¶

Get the name of the part. It’s the same name as in the input deck.

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> part.get_name()
'PLATE_C'

get_node_ids()¶

Get the unique node ids of the part.

Returns

node_idsnp.ndarray: unique node ids

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> part.get_node_ids().shape
(6489,)

get_node_indexes()¶

Get the unique node indexes of the part.

Returns

node_indexesnp.ndarray: unique node indexes

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> part.get_node_indexes().shape
(6489,)

get_nodes()¶

Get the nodes of the part. Note that a node may belong to two parts, since only the elements are uniquely assignable.

Returns

nodeslist(Node): nodes belonging to the elements of the part

Examples

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> len( part.get_nodes() )
52341

plot(self, iTimestep=0, element_result=None, fringe_bounds=[None, None], export_filepath=None)¶

Plot the Part, currently shells only!

Parameters

iTimestepint: timestep at which to plot the D3plot
element_resultstr or function: which type of results to use as fringe None means no fringe is used Function shall take elem as input and return a float value (for fringe)
fringe_boundslist(float,float) or tuple(float,float): bounds for the fringe, default will use min and max value
export_filepathstr: optional filepath for saving. If none, the model is exported to a temporary file and shown in the browser.

Examples

Load a d3plot and plot a part

>>> d3plot = D3plot("path/to/d3plot")
>>> part = d3plot.get_partByID(1)
>>> part.plot() # just geometry

Read the state data and plot in deformed state

>>> # read state data
>>> d3plot.read_states(["disp","stress_mises max"])
>>> part.plot(iTimestep=-1) # last state

Use a user-defined element evaluation function for fringe colors.

>>> # User defined evaluation function
>>> def eval_fun(element):
>>>     res = element.get_stress_mises()
>>>     if len(res): # some elements may miss stresses
>>>         return res[-1] # last timestep
>>> part.plot(iTimestep=-1, element_result=eval_fun)