Mechanical APDL Basic Analysis Guide

loads) is also read in,but only if either element nodal loads or reaction loads are available; see the OUTRES
command for more information. If they are not available, no boundary conditions will be available for
listing or plotting. Only constraints and forces are read in; surface and body loads are not updated and
remain at their last specified value. However, if the surface and body loads have been specified using
tabular boundary conditions, they will reflect the values corresponding to this results set. Loading
conditions are identified either by load step and substep or by time (or frequency). The arguments
specified with the command or path identify the data to be read into the database. For example,SET,2,5
reads in results for load step 2, substep 5. Similarly,SET,,,,,3.89 reads in results at time = 3.89 (or frequency
= 3.89 depending on the type of analysis that was run). If you specify a time for which no results are
available, the program performs linear interpolation to calculate results at that time.

The default maximum number of substeps in the results file (Jobname.RST) is 1000.When the number
of substeps exceeds this limit, you need to issue SET,Lstep,LAST to bring in the 1000th load step. Use
/CONFIG to increase the limit.

Caution

For a nonlinear analysis, interpolation between time points usually degrades accuracy.

Therefore, take care to postprocess at a time value for which a solution is available.

Some convenience labels are also available on SET:

• SET,FIRST reads in the first substep. The GUI equivalent is Main Menu> General Postproc> Read
  Results> First Set.


• SET,NEXT reads in the next substep. The GUI equivalent is Main Menu> General Postproc> Read
  Results> Next Set.


• SET,LAST reads in the last substep. The GUI equivalent is Main Menu> General Postproc> Read
  Results> Last Set.


• The NSET field on the SET command (GUI equivalent is Main Menu> General Postproc> Read
  Results> By Set Number) retrieves data that corresponds to its unique data set number, rather than
  its load step and substep number. The LIST option on the SET command (or Main Menu> General
  Postproc> List Results in the GUI) lists the data set number along with its corresponding load step
  and substep numbers. You can enter this data set number on the NSET field of the next SET command
  to request the proper set of results.


• The ANGLE field on SET specifies the circumferential location for harmonic elements (structural -
  PLANE25,PLANE83, and SHELL61; thermal - PLANE75 and PLANE78).

Note

You can postprocess results without reading in the results data if the solution results were

saved to the database file (Jobname.DB). Distributed ANSYS, however, can only postprocess

using the results file (Jobname.RST) and cannot use the Jobname.DB file since no solution

results are written to the database. Therefore, you must issue a SET command before post-

processing in Distributed ANSYS.

7.1.2. Other Options for Retrieving Results Data

Other GUI paths or commands also enable you to retrieve results data.

Release 15.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information

The General Postprocessor (POST1)