expand

Mapdl.expand(nrepeat='', hindex='', icsys='', sctang='', phase='', **kwargs)

Displays the results of a modal cyclic symmetry analysis.

APDL Command: EXPAND

Parameters
nrepeat

Number of sector repetitions for expansion. The default is 0 (no expansion).

modal

Specifies that the expansion is for a modal cyclic symmetry analysis.

hindex

The harmonic index ID for the results to expand.

icsys

The coordinate system number used in the modal cyclic symmetry solution. The default is the global cylindrical coordinate system (specified via the CSYS command where KCN = 1).

sctang

The sector angle in degrees, equal to 360 divided by the number of cyclic sectors.

This field is reserved for future use.

phase

The phase angle in degrees to use for the expansion. The default is 0. Typically, the value is the peak displacement (or stress/strain) phase angle obtained via the CYCPHASE command.

Notes

Issue this command to display the results of a modal cyclic symmetry analysis.

When you issue the EXPAND,Nrepeat command, subsequent SET commands read data from the results file and expand them to Nrepeat sectors. As long as no entities have been modified, this expansion can be negated (that is, reverted to single sector) by issuing EXPAND with no arguments. If you modify entities and wish to return to the partial model, use the Session Editor (see Restoring Database Contents in the Operations Guide).

EXPAND displays the results and allows you to print them, as if for a full model. The harmonic index (automatically retrieved from the results file) appears in the legend column.

When plotting or printing element strain energy (SENE), the EXPAND command works with brick or tet models only. Element kinetic energy (KENE) plotting or printing is not supported.

EXPAND is a specification command valid only in POST1. It is significantly different from the /CYCEXPAND command in several respects, (although you can use either command to display the results of a modal cyclic symmetry analysis):

EXPAND has none of the limitations of the /CYCEXPAND command.

EXPAND changes the database by modifying the geometry, the nodal displacements, and element stresses as they are read from the results file, whereas the /CYCEXPAND command does not change the database.

Caution:: : The EXPAND command creates new nodes and elements; therefore, saving (or issuing the /EXIT, ALL command) after issuing the EXPAND command can result in large databases.

Distributed ANSYS Restriction: This command is not supported in Distributed ANSYS.