IOPTN

IOPTN

IOPTN, Lab, VAL1
Controls options relating to importing a model.

AUX15: IGES

Lab

Label identifying the import option. The meaning of VAL1 varies depending on Lab.

STAT

—

List overall status of import facilities, including current option values. VAL1 is ignored.

DEFA

—

Set default values for all import options. VAL1is ignored.

MERG

—

Entity merge option. VAL1 can be:

YES	—	Automatic merging is performed (default).
NO	—	No merging of entities.

SOLID

—

Solid option. VAL1 can be:

YES	—	Solid is created automatically (default).
NO	—	No solid created.

GTOLER

—

Entity merging tolerance. If IGES = SMOOTH, the GTOLER,VAL1 can be:

DEFA	—	Use system defaults (default).
FILE	—	Use tolerance from the imported file.
n	—	A user-specified tolerance value.

IGES

—

IGES import option. VAL1 can be:

STAT	—	List status of IGES related options in the output window.
SMOOTH (or RV52)	—	Use more robust IGES revision 5.2 import function (default).

SMALL

—

Small areas option. VAL1 can be:

YES	—	Small areas are deleted (default).
NO	—	Small areas are retained.

VAL1

Additional input value as described under each Lab option.

Command Default

Merging is performed during the IGES transfer with no global solid model tolerance (GTOLER) used.

Notes

Controls various options during a model file transfer. A global solid model tolerance (GTOLER) can be specified.

The SMALL,YES option (default) delete small areas and can cause geometrical inconsistencies that could cause the import process to abort. Retaining the small areas increases processor time and memory usage.

The data is stored in the standard ANSYS graphics database.

The IGES,SMOOTH (default) option is capable of reading in any rational B-spline curve entity (type 126), or rational B-spline surface entity (type 128) with a degree less than or equal to 20. Attempts to read in B-spline curve or surface entities of degree higher than 20 may result in error messages.

If you issue the /CLEAR command, the IOPTN settings return to their defaults.

For MERG,YES, merging of coincident geometry items is performed automatically when the IGESIN command is issued (that is, an internal NUMMRG,KP command is issued). The model is merged with the consideration tolerance (TOLER on NUMMRG) set equal to 0.75 * the shortest distance between the endpoints of any active line. See the NUMMRG command for more information about the tolerances. In most cases, the default merging is appropriate. Use the IOPTN command when you want to:

Disable merging operations.
Override the default merging and specify a global solid model tolerance value (GTOLER).
Disable the automatic creation of solids (SOLID).

The IOPTN command should be issued before the IGESIN command. You cannot change these options after your model has been imported or created. If you must change the options:

Clear the database (/CLEAR) or exit and restart the program.
Set the correct options.
Reimport or recreate the model.

This command is valid in any processor.

Menu Paths

Utility Menu>File>Import