*remesh_element_intersection

Remeshes 2D elements at intersection locations.

Syntax

*remesh_element_intersection entity_type mark_id params

Type

HyperMesh Tcl Modify Command

Description

Remeshes 2D elements at intersection locations. Elements are distributed into groups based on their connectivity. The elements belonging to different components may be in the same group. Only different groups are taken as counterparts for the intersection calculation. Moreover, elements sharing a node are not counterparts of the intersection calculation on checking element/element intersection.

Inputs

entity_type
The type of entities to remesh. Valid values are comps and elems.
mark_id
The ID of the mark containing the entities to remesh. Valid values are 1 and 2.
params
The parameters of re-meshing along the cut, defined as "keyword value" format.
For example: "angle 30.0 generate_intersect_segments_only 0 remove_internal_shell 1 do_only_remove_internal_shell 0 num_remesh_layers 2"
Valid keywords and values are:
angle
Values used to define feature edges on mesh. Default if not specified is 30.0.
break_shell_along_component_boundaries
All elements connected to each other are classified as a group. This defines how that grouping occurs:
0 - Do not break element grouping at component boundaries (default)
1 - Element grouping stops at component boundaries. This means that elements in an element group belong to a single component.
close_small_intersection_gaps
Specifies whether to close small gaps along intersection lines and free shell mesh boundaries.
0 - Do not close (default)
1 - Close
do_only_remove_internal_shell
Indicates that the command only removes internal elements. It requires that all intersecting elements are conformal along the common intersecting element edge lines.
0 - Do not apply (default)
1 - Only remove internal shells. If specified, remove_internal_shell must be 1 or undefined and generate_intersect_segments_only must be 0 or not defined.
gap_close_method
Specifies the method for closing small gaps. Gaps are closed by extending free edge elements to the intersecting target mesh.
1 - Tangent extension
2 - Free edge normal projection
generate_intersect_segments_only
Indicates that the command only creates intersection segments.
0 - Do not apply (default)
1 - Only generate intersection segments. If specified, do_only_remove_internal_shell must be 0 or undefined.
intersection_gap_close_limit
The gap close size limit. Must be specified if close_small_intersection_gaps=1.
keep_intersect_edges
Specifies whether to store mesh intersections as 1D elements.
0 - Do not store (default)
1 - Store
num_remesh_layers
Defines the number of element layers attached to intersecting elements considered for remeshing. Valid values are:
-1 - Intersecting elements are split and stitched to obtain conformal element connectivity.
0 - Remesh only intersecting elements.
> 0 - Remesh specified additional layers in addition to intersecting elements.
num_threads
Specifies the number of threads to use:
-1 - Multi-teading with no limit (default)
0 - No multi-threading
> 0 - The exact number of threads
remove_internal_shell
0 - Do not remove internal elements when selected elements form two or more watertight shells.
1 - Remove internal elements when selected elements form two or more watertight shells (default).
remove_small_penetration
Specifies whether to remove small penetrations. A penetration consists of a group of connected elements whose boundaries are only intersection lines and free shell mesh boundaries.
0 - Do not remove (default)
1 - Remove
tria_remesh_growth_ratio
The element size growth ratio used by the adaptive tria mesher when use_adaptive_tria_remesh=1.
Default if not specified is 1.5.
tria_remesh_span_angle
The maximum element normal angle deviation used by the adaptive tria mesher when use_adaptive_tria_remesh=1.
Default if not specified is 35.0.
trim_removal_limit
The maximum distance between intersection lines and free element edges in small penetrations to be removed. Must be specified if remove_small_penetration=1.
use_adaptive_tria_remesh
Specifies whether to use the adaptive tria mesher when re-meshing triangular elements.
0 - Do not use (default)
1 - Use

Example

To trim displayed components, removing internal shells and remeshing using 2 additional layers:
*createmark comps 1 "displayed"
*remesh_element_intersection comps 1 "generate_intersect_segments_only 0 remove_internal_shell 1 do_only_remove_internal_shell 0 num_remesh_layers 2 angle 30.0"

Errors

Incorrect usage results in a Tcl error. To detect errors, you can use the catch command:
if { [ catch {command_name...} ] } {
   # Handle error
}

Version History

12.0.110