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
}