*hm_auto_elem_cleanup_new

Syntax

*hm_auto_elem_cleanup_new elem_mark_id node_mark_id feature_angle criteria_file string_array number_of_strings

Type

HyperMesh Tcl Modify

Description

Attempts to automatically improve the quality of failed elements using node movements and/or local remeshing, along with optional tria reduction.

Inputs

elem_mark_id

The ID of the mark containing the elements to correct. Valid values are 1 and 2.

node_mark_id

The ID of the mark containing any anchor nodes to preserve during cleanup. Valid values are 1 and 2.

feature_angle

The angle used to define features. Valid values are 0-360, and 30 is a common value.

criteria_file

The path to the criteria file. If the criteria are set using *setqualitycriteria, "dummy" can be used as the criteria file name.

string_array

The string array ID that contains the list of entity types. A value of ALL means all entity types. The string array is created using the *createstringarray command. This should always be set to 1. Valid strings include:

• ConsiderFailedElems failed adjacent layers

  This defines the elements affected by the cleanup. This string contains three values in fixed sequence as:

  • failed

    0 - Consider all elements

    1 - Consider only failed elements

  • adjacent

    Used when failed is 1.

    0 - Do not consider adjacent elements to failed elements

    1 - Consider adjacent elements to failed elements

  • layers

    Used when adjacent is 1.

    The number of adjacent layers to consider.

• FixFailedElements mode

  Indicates whether to use the QI-based re-meshing to cleanup elements.

  • mode

    0 - Do not perform re-meshing

    1 - Perform re-meshing

• FixWarpageByNodeMove mode tolerance

  This defines the tria reduction options:

  • mode

    0 - Do not fix warped elements by normal node movement

    1 - Fix warped elements by normal node movement

  • tolerance

    Used when mode is 1.

    The maximum value a node is allowed to move normally to fix the warpage.

• KeepNonShellConnected mode

  Indicates whether to maintain connectivity between 2D element edges shared with 1D and 3D elements during cleanup.

  • mode

    0 - Do not maintain connectivity. Elements may become disconnected after cleanup.

    1 - Maintain connectivity

• PreserveFeatures mark_id

  Any 1D plot elements to keep as features during cleanup.

  • mark_id

    The ID of the mark containing the 1D plot elements. Valid values are 1 and 2.

• QISmooth mode target move_shared move_shared_tol move_free move_free_tol

  Options defining how to smooth nodes to correct the quality.

  • mode

    0 - Do not optimize quality

    1 - Optimize quality

  • target

    The QI target value to attempt to achieve.

  • move_shared

    0 - Move nodes along shared edges only

    1 - Move nodes along and across shared edges

  • move_shared_tol

    The maximum amount a node is allowed to move across a shared edge when move_shared is 1.

  • move_free

    0 - Move nodes along free edges only

    1 - Move nodes along and across free edges

  • move_free_tol

    The maximum amount a node is allowed to move across a free edge when move_free is 1.

• ReduceTriaElements reduce_trias keep_edges

  This defines the tria reduction options:

  • reduce_trias

    0 - Do not perform tria reduction

    1 - Perform tria reduction

  • keep_edges

    Used when reduce_trias is 1.

    0 - Do not preserve edges

    1 - Preserve edges

• RemoveInverseElements mode angle

  Indicates whether to split warped/split quads.

  • mode

    0 - Do not remove

    1 - Remove

  • angle

    The inversion angle to consider.

• SplitWarpedSkewedQuads mode

  Indicates whether to split warped/split quads.

  • mode

    0 - Do not split

    1 - Split

number_of_strings

Integer indicating the size (number of strings) in the string array created using *createstringarray.

Example

Auto correct all elements, using anchor node 50, defining the criteria via a file, no preserved features, considering 7 adjacent layers, using remeshing and tria reduction:

*readqualitycriteria c:/criteria/mycriteria.txt
*createmark elements 1 all
*createmark nodes 2 50
*createstringarray 9 "PreserveFeatures: 0" "ConsiderFailedElems: 1 1 7" "RemoveInverseElements: 1 150" "ReduceTriaElements: 1 1" "FixFailedElements: 1" "QISmooth: 1 0.2 0 0 0 0" "KeepNonShellConnected: 0" "SplitWarpedSkewedQuads: 1" "FixWarpageByNodeMove: 0 0"
*hm_auto_elem_cleanup_new 1 2 15 "dummy" 1 9

Errors

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

Version History

2017.1