*splitelementbyelemselect

Splits shell element patches using patterns based on the patch shared edges.

Syntax

*splitelementbyelemselect elem_mark=<mark_id> ?option1=<value1>? ?option2=<value2>? ... ?optionN=<valueN>?

Type

HyperMesh Tcl Modify Command

Description

Splits shell element patches using patterns based on the patch shared edges.

Inputs

elem_mark=<mark_id>: The ID of the mark containing elements to split. Valid values are 1 and 2.
consider1ds=<value>: Check for 1D elements during the split operation.; 0 – Splitting 1D elements disabled.; 1 – Splitting 1D elements enabled. (default)
dividequadsoptions =<value>: The orientation of the diagonals of the selected elements after split.; ShortestDiagonals – Chooses the shortest diagonal in each element. (default); AlignedDiagonals – Aligns all the diagonals in the same direction.; UnionjackDiagonals – Creates a union-jack pattern out of the diagonals.; LargestAngleDiagonals – Chooses the diagonal that splits the largest angle in the element.
midpointoptions =<value>: The element split pattern at the midpoint.; ToQuads – Splits quads and trias into quads only.; ToTrias – Splits quads and trias into trias only.
reverseorientation =<value>: Check for switching to the other diagonal within each selected element.; 0 – The diagonals are not reversed. (default); 1 – The diagonals are reversed.
splitallsidesoptions =<value>: The mode in which trias are split if “SplitAllSides” is the split mode. This option is effective only if splitoptions is set to SplitAllSides and splitnumberedges is set to 1.; Quads – Splits a tria into three quads. (default); Mixed – Splits a tria into two trias and one quad.
splitnumberedges =<value>: The number of splits in each edge of the selected elements. Default value is 1.
splitoptions =<value>: The split mode.; SplitAllSides – Splits each edge of the selected elements. (default); DivideQuads – Divides selected quads along the diagonals.; Midpoint – Splits selected elements at their midpoint.
useinferredgeometry =<value>: Checks for using inferred geometry from the nodes when the underlying geometry is not specified.; 0 – Do not use inferred geometry.; 1 – Use inferred geometry.
useadjacentlayer =<value>: Checks for using a layer of adjacent elements as transition elements for split operations.; 0 – Do not use adjacent layer. (default); 1 – Use an adjacent layer.

Examples

To split elements ID 10 and 11:

*createmark elements 1 10 11
*splitelementbyelemselect elem_mark=1 splitoptions=SplitAllSides splitallsidesoptions=Quads consider1ds=1 splitnumberedges=5 useinferredgeometry=1 useadjacentlayer=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

2021

2022.3 - Updated the syntax to support name-value argument pairs and added new option consider1ds.

2023 - Added new options dividequadsoptions, midpointoptions, reverseorientation, splitallsidesoptions, splitnumberedges, splitoptions, useinferredgeometry and useadjacentlayer.