The following commands operate on Part objects. For more information about the Part object, see “Part object,” Section 37.1.
import meshEdit
This method is used to adjust the midside node of second-order elements of an orphan mesh part.
Required arguments
A sequence of Node objects specifying the nodes towards which connected midside nodes will be biased.
A Float specifying the normalized distance along the edge of the midside nodes. Possible values are 0.0
parameter
Optional arguments
Return value
Exceptions
This method is used to collapse short element edges and delete collapsed elements, or grow short element edges, on an orphan mesh part composed of linear elements.
Required argument
A Float specifying the edge length tolerance. During the operation, edges shorter than the given tolerance will be collapsed, or grown to the specified length.
Optional arguments
A Boolean specifying whether short element edges will be grown to the specified tolerance. Default is False, meaning short edges will be collapsed.
The elements to consider as the domain for the operation. By default all elements on the part are considered. The elements may be given as a MeshElementArray, a list of MeshElement objects, a Set, or a list of Set objects.
A MeshEdge specifying a reference edge to indicate a topological direction in a structured mesh that will limit which edges within the element domain are considered. That is, only edges that are found to be topologically parallel to the given reference edge will be considered by the operation. By default all edges of the element domain are considered, unless thicknessDir is specified, in which case the operation will attempt to determine the topological edges from the thickness direction.
A tuple of two or three Floats indicating a vector along which element edge lengths will be measured.
A Boolean indicating whether element edges will be all grown in the direction of the thickness vector specified by thicknessDir. This argument is ignored unless growEdges is True and thicknessDir is provided. When this argument is True the growth of any given element edge will no longer be constrained by short edges on neighboring elements, but elements could move from their original positions in cases where there are multiple adjacent layers of thin elements. The default value is False.
Return value
Exceptions
This method collapses an edge of a quadrilateral or triangular element of an orphan mesh part or part instance.
Required arguments
A single MeshEdge object specifying the element edge to collapse.
A SymbolicConstant specifying the method used to collapse the edge. Possible values are FORWARD, REVERSE, and AVERAGE.
Optional arguments
Return value
Exceptions
This method combines two triangular elements of an orphan mesh part or an Abaqus native mesh.
Required argument
A sequence of triangular MeshElement objects specifying the elements to combine.
Optional arguments
Return value
Exceptions
This method removes all solid elements from an orphan mesh part and creates triangular or quadrilateral shell elements along their outer faces.
Arguments
Return value
Exceptions
This method deletes the given elements from an orphan mesh part or an Abaqus native mesh. If the elements belong to an Abaqus native mesh then the elements must have been generated using the bottom-up meshing technique.
Required argument
A sequence of MeshElement objects or a Set object containing elements.
Optional argument
A Boolean specifying whether to delete all those associated nodes that become unreferenced after the given elements are deleted. The default value is OFF.
Return value
Exceptions
This method deletes the given nodes from an orphan mesh part.
Required argument
A sequence of MeshNode objects or a Set object containing nodes.
Optional argument
A Boolean specifying whether to delete all those associated nodes that become unreferenced after the given nodes and the connected elements are deleted. The default value is OFF.
Return value
Exceptions
This method changes the coordinates of the given nodes on an orphan mesh part or on an Abaqus native mesh.
Required argument
A sequence of MeshNode objects or a Set object containing nodes.
Optional arguments
A Float specifying the value of the first coordinate. If coordinate1 and offset1 are unspecified, the existing value does not change.
A Float specifying the value of the second coordinate. If coordinate2 and offset2 are unspecified, the existing value does not change.
A Float specifying the value of the third coordinate. If coordinate3 and offset3 are unspecified, the existing value does not change.
A sequence of three-dimensional coordinate tuples specifying the coordinates for each of the given nodes. When specified, the number of coordinate tuples must match the number of given nodes, and be ordered to correspond to the given nodes in ascending order according to index. Furthermore, coordinate1, coordinate2, coordinate3, offset1, offset2, or offset3 may not be specified.
A Float specifying an offset to apply to the value of the first coordinate of the specified nodes.
A Float specifying an offset to apply to the value of the second coordinate of the specified nodes.
A Float specifying an offset to apply to the value of the third coordinate of the specified nodes.
A DatumCsys object specifying the local coordinate system. If unspecified, the global coordinate system will be used.
A Boolean specifying whether to project nodes back to their original geometry. For example, if a node is on a face, this method first positions the node at the new location and then projects it back to the original face. The default value is ON.
Return value
Exceptions
A coordinate and an offset may not both be specified for the same coordinate component.
This method projects the given nodes onto a mesh entity, geometric entity, or a datum object. The nodes may belong to an orphan mesh part or to an Abaqus native mesh.
Required arguments
A sequence of MeshNode objects to be projected.
An object specifying the target for the node projection operation. The projectionReference can be any one of the following objects: MeshNode, MeshEdge, MeshFace, Vertex, Edge, Face, DatumPoint, DatumAxis, or DatumPlane.
Optional arguments
Return value
Exceptions
This method generates a new mesh on an orphan mesh part based on the original mesh.
Required arguments
Optional argument
A SymbolicConstant specifying the element shape to be used for meshing. Possible values are:
TRI
Refine a planar triangular mesh and replace it with a new one. If no element sizes are attached, the new mesh will be governed by the sizes of the boundary edges in the old mesh.
TET
Create a tetrahedral mesh from a closed shell of triangular elements.
Return value
Exceptions
This method generates a solid or shell mesh from an orphan mesh surface by generating layers of elements that propagate out normal to the surface boundary.
Required arguments
A Region object specifying the domain to be offset.
A Symbolic Constant specifying the type of mesh to be generated. Possible values are SOLID or SHELL.
A Float specifying the total thickness of the solid layers. This argument applies only when meshType=SOLID.
A Float specifying the distance between shell layers. This argument applies only when meshType=SHELL.
An Int specifying the number of element layers to be generated.
Optional arguments
A Symbolic Constant specifying the direction of the offset. This argument is required only when the given region relates to a shell mesh. Possible values are OUTWARD, INWARD, and BOTH. The default value is OUTWARD.
A Float specifying the magnitude of the initial offset. The default value is zero.
Boolean specifying whether the first layer of nodes should be shared with nodes on the base surface. The default value is False.
A Boolean specifying whether to delete the shell elements after the offset layers are generated. The default value is False. This argument applies only when meshType=SHELL.
A Boolean specifying whether to use element-based thickness or nodal-based thickness. The default value is False.
A Boolean specifying whether existing element sets that include base elements will be extended to include corresponding offset elements. The default value is False.
Return value
Exceptions
Merge the nodes of an orphan mesh part, or nodes that were generated using the bottom-up meshing technique.
Required argument
A sequence of Node objects specifying the nodes to merge.
Optional arguments
A Float specifying the maximum distance between nodes that will be merged to a single node. The location of the new node is the average position of the merged nodes. The default value is 10–6.
A Boolean specifying whether elements with the same connectivity after the merge will merged into a single element. The default value is True.
A Boolean specifying which node labels will remain after nodes are merged. If True then the highest node labels are kept; when False the lowest node labels are kept. The default value is False. This argument applies only to merging of orphan mesh nodes.
Return value
Exceptions
Merge a selection of elements arranged in layers on an orphan mesh part into a single layer.
Required arguments
A MeshEdge of one of the specified elements that serves as a reference edge to indicate the topological direction for merging elements. All specified elements must be reachable by topological navigation from this element edge, and the topological direction must be unambiguous.
A MeshElementArray, a list of MeshElement objects, a Set, or a list of Set objects containing the elements to be included in the merge operation.
Optional arguments
Return value
Exceptions
Merge two nodes of an orphan mesh part or an Abaqus native mesh. If the nodes belong to an Abaqus native mesh then at least one of the two nodes must have been generated using the bottom-up meshing technique.
Required arguments
A MeshNode object specifying the first node to merge.
A MeshNode object specifying the second node to merge.
Optional arguments
A Boolean specifying whether elements with the same connectivity after the merge will merged into a single element. The default value is True.
A Boolean specifying which node label will remain after nodes are merged. If True then the higher node label is kept; when False the lower node label is kept. The default value is False. This argument applies only to merging of orphan mesh nodes.
Return value
Exceptions
This method orients the stack direction of elements in a continuum shell or gasket mesh.
Required arguments
A sequence of MeshElement objects specifying the elements to orient.
A MeshFace object specifying a reference top face that indicates the desired orientation.
Optional arguments
Return value
Exceptions
This method removes the global element size from an orphan mesh part.
Arguments
Return value
Exceptions
This method assigns new labels to orphan mesh elements.
Required arguments
Optional arguments
Either startLabel and increment, or offset, or labels must be specified.
A MeshElementArray or a tuple or list of MeshElement objects, or a Set containing elements to be renumbered. If unspecified, all elements in the part will be renumbered.
A positive Int specifying the new label for the first element in elements.
A positive Int specifying the increment used for computation of new labels for all consecutive elements in elements.
An Int by which existing labels of the specified elements will be offset.
A list of labels for the specified elements. The length of this list must match the number of specified elements.
Return value
Exceptions
Renumbering is attempted on a native part:
Renumbering data is specified incorrectly:
Renumbering will result in invalid labels:
Renumbering will result in conflicting labels:
This method assigns new labels to orphan mesh nodes.
Required arguments
Optional arguments
Either startLabel and increment, or offset, or labels must be specified.
A MeshNodeArray or a tuple or list of MeshNode objects, or a Set containing nodes to be renumbered. If unspecified, all nodes in the part will be renumbered.
A positive Int specifying the new label for the first node in nodes.
A positive Int specifying the increment used for computation of new labels for all consecutive nodes in nodes.
An Int by which existing labels of the specified nodes will be offset.
A list of labels for the specified nodes. The length of this list must match the number of specified nodes.
Return value
Exceptions
Renumbering is attempted on a native part:
Renumbering data is specified incorrectly:
Renumbering will result in invalid labels:
Renumbering will result in conflicting labels:
This method sets the global element size for an orphan mesh part.
Required argument
A Float specifying the desired element size.
Optional arguments
Return value
Exceptions
This method splits quadrilateral elements of an orphan mesh part or a Abaqus native mesh into triangular elements.
Required argument
A sequence of quadrilateral MeshElement objects specifying the elements to split. Each quadrilateral element is split into two triangular elements by the shorter diagonal.
Optional arguments
Return value
Exceptions
This method splits an edge of a quadrilateral or triangular element of an orphan mesh part or an Abaqus native mesh.
Required argument
A single MeshEdge object specifying the element edge to split.
Optional argument
A Float specifying the normalized distance along edge at which to split. Possible values are 0.0
parameter
Return value
Exceptions
Subdivide a selection of elements on an orphan mesh part in one or more directions.
Required arguments
Optional arguments
A MeshElementArray, a list of MeshElement objects, a Set, or a list of Set objects containing the elements to be subdivided. By default all the elements of the part are subdivided.
An Int specifying the number of resulting elements for each input element in each direction of the subdivision. If face or edge are not specified, elements will be subdivided according to this number in all possible directions. Must be greater than one. Default is 2.
A MeshFace object that serves as a reference for indicating two topological directions for the subdivision operation. Must be a face of one of the specified elements, and all specified elements must be reachable by topological navigation from this element face. May not be combined with edge.
A MeshEdge object that serves as a reference for indicating a single topological direction for the subdivision operation. Must be an edge of one of the specified elements, and all specified elements must be reachable by topological navigation from this element edge. May not be combined with face.
Return value
Exceptions
This method swaps the diagonal of two adjacent triangular elements of an orphan mesh part or an Abaqus native mesh.
Required argument
A single MeshEdge object specifying the element edge to swap.
Optional arguments
Return value
Exceptions
This method wraps a planar orphan mesh part about the Z-axis.
Required argument
A Float specifying the radius of the cylinder about which the part is to be wrapped. The wrapping procedure will relocate a node at point (
,
) on the planar mesh to (
), where
is the specified radius,
=
, and
=
Optional arguments
Return value
Exceptions
This method executes the edit mesh or the bottom-up meshing operation most recently undone by the undoMeshEdit method on an part. A redo action must be currently available for the part. This implies that the user must have executed the undoMeshEdit method on the part and that the user has not subsequently executed any further edit mesh commands on the assembly. It also implies that the user provided a sufficient cache allowance to store the undo operation.
Arguments
Return value
Exceptions
This method undoes the most recent edit mesh or the bottom-up meshing operation on a part and restores the mesh to its previous state. An edit mesh undo action must be available for the part. This implies that prior to executing an edit mesh command on the part, the user enabled edit mesh undo with a sufficient cache allowance to store the edit mesh operation.
Arguments
Return value
Exceptions