*optimized_mesh

Syntax

*optimized_mesh mark_id filename elem_size elem_type smooth_across feature_angle algorithm do_remesh comp_mode

Type

HyperMesh Tcl Modify Command

Description

This command is used to create a mesh on a surface using saved or default parameters on surfaces and specifying various options. Any elements attached to the input surfaces are deleted before the meshing operation.

Inputs

mark_id

The mark ID containing the surfaces to mesh. Valid values are 1 and 2.

criteria_file

The full path and filename for the user-defined quality index criteria file. If no file is given, "dummy" should be specified.

elem_size

The default element size used to calculate element densities along edges for topology cleanup operations.

elem_type

The type of elements to create. Valid values are:

• 0 - trias
• 1 - quads
• 2 - mixed
• 3 - right trias
• 4 - quads only

smooth_across

Flag indicating whether to ignore surface edges for element smoothing and cleanup operations. Valid values are:

• 0 - Honor surface edges for element smoothing and cleanup.
• 1 - Ignore surface edges for element smoothing and cleanup.

feature_angle

The angle, in degrees, specifying the feature lines. This is approximately the minimum angle between the elements adjacent to a feature line.

algorithm

Determines the algorithm for surface meshing. Valid values are:

• 0 - Standard surface meshing
• 1 - Meshing with flow "align" control
• 3 - Meshing with flow "align" and "size" control

do_remesh

Flag indicating whether to keep or delete existing elements on the surfaces. Valid values are:

• 2 - Break connectivity between neighboring surfaces.
• 3 - Keep connectivity between neighboring surfaces.
• 4 - Redo connectivity between neighboring surfaces by expanding surface selection by one layer of adjacent surfaces.

comp_mode

Parameter specifying how entities are organized into components:

• 0 - Elements are created in the current component.
• 1 - Elements are created in the same components as their parent surfaces.

Example

To start the optimization process with a criteria file named C:/criteria/mycriteria.txt for displayed surfaces, with tria elements, element size of 15, feature angle of 35 degrees, ignoring surface edges for smoothing and new elements created in their surface components:

*createmark surfaces 1 displayed
*optimized_mesh 1 "C:/criteria/mycriteria.txt" 15 0 1 35 0 0 1

Errors

if { [ catch {command_name...} ] } {
   # Handle error
}