*autotopocleanup

Performs automatic preparation of a model’s topology for meshing, using specified element size and element quality criteria.

Syntax

*autotopocleanup surfmark criteria_filename param_filename

Type

HyperMesh Tcl Modify Command

Description

Performs automatic preparation of a model’s topology for meshing, using specified element size and element quality criteria. These criteria may include geometry feature recognition (fillets, holes, beads, flanges, etc.), the topology simplification, cleaning of small features, etc. The parameters controlling the topology cleanup stages and tools are given as a set of topology cleanup parameters.

Inputs

Surfmark: The mark of surfaces to be processed.
criteria_filename: The path to the file with element quality criteria.
param_filename: The path to the file with topology cleanup parameters.

The quality criteria and topology cleanup parameters files should be prepared using Criteria Editor dialog from HyperMesh or BatchMesher. Both criteria and parameters set can be pre-set directly in the command file. In this case, use "dummy" (without quotes) for the criteria and/or parameters file name, respectively (this allows you to specify criteria/parameters directly within of of the following commands):

*readqualitycriteria or *setqualitycriteria for criteria;

*createcleanupparamsfromstrings, *create_batch_file, or *readbatchparamsfile for cleanup parameters.

The cleanup parameters are deleted after every call of the *autotopocleanup command, so when a "dummy" parameter is used the cleanup parameters must be set with one of the above mentioned commands prior to each call of *autotopocleanup.

Examples

To perform topology cleanup of all displayed surfaces using element quality criteria nvh10.criteria and quality parameters file nvh10.param:

*createmark surfaces 1 "displayed"
*autotopocleanup 1 "nvh10.criteria" "nvh10.param"

To perform topology cleanup of all displayed surafaces using element quality criteria set directly in the command file and quality parameters file nvh10.param:

*createstringarray 14 \
" 0 penalty value      0.00    0.00    0.80    1.00   10.00" \
" 1 min length        1 1.0   3.000   2.749   1.502   1.000   0.749  1" \
" 2 max length        1 1.0   3.000   3.600   4.500   6.000   9.000  0" \
" 3 aspect ratio      1 1.0   1.000   2.000   4.400   5.000  10.000  0" \
" 4 warpage           1 1.0   0.000   5.000  13.000  15.000  30.000  0" \
" 5 max angle quad    1 1.0  90.000 110.000 134.000 140.000 160.000  0" \
" 6 min angle quad    1 1.0  90.000  70.000  46.000  40.000  20.000  0" \
" 7 max angle tria    1 1.0  60.000  80.000 112.000 120.000 150.000  0" \
" 8 min angle tria    1 1.0  60.000  50.000  34.000  30.000  15.000  0" \
" 9 skew              1 1.0   0.000  10.000  34.000  40.000  70.000  0" \
"10 jacobian          1 1.0   1.000   0.900   0.700   0.600   0.300  0" \
"11 chordal dev       0 1.0   0.000   0.300   0.800   1.000   2.000  0" \
"12 taper             1 1.0   0.000   0.200   0.500   0.600   0.900  0" \
"13 % of trias        1 1.0   0.000   6.000  10.000  15.000  20.000  0"
*setqualitycriteria 1 14 0
*createmark surfaces 1 "displayed"
*autotopocleanup 1 "dummy" "nvh10.param"