Mechanical APDL Basic Analysis Guide - Ansys

Chapter 7:The General Postprocessor (POST1)
• Magnetic Forces
• Pressure Gradients
• Body Temperatures
• Densities for Topological Optimization
You can also create a PGR file from the Results Viewer. The Results Viewer file menu links to the PGR File
Options dialog box, allowing you to write and append to a PGR file from a results file that is already loaded.
You can then take advantage of the speed and flexibility of the Results Viewer and access your data faster,
in a subsequent run. See The Results Viewer Main Menu (p. 162) later in this section for more information on
writing or appending to your PGR file from the viewer.
Stresses can only be displayed in the coordinate system that was active when the PGR file was written. If
you wish to use the results viewer to view stresses in other coordinate displays, you must reload your results
file (*.RST, *.RFL, *.RTH, *.RMG, etc.).
The PGR file creation operations are controlled by the PGWRITE command, and can be accessed either via
the menu, as described above, or via the command line.
7.3.2. Appending to an Existing PGR File in POST1
In solution, you are given the option to specify the items you want written to your PGR file. Often, you may
wish to add additional data to your existing PGR file. You can append your PGR file and access all of the
existing data, along with the new solution data, from the same analysis. You can also modify your analysis
parameters (loading, step data, constraint data, etc.) and add that information to the PGR file. The only requirements
are that you do not change any of the “data to save on file” criteria, and that you do not modify
the geometry of your model. If you attempt to append a PGR file with different items in the “data to save
on file” area selected, ANSYS will generate an error message and prevent you from proceeding. Once you
have changed the information to align with the existing PGR data, you will be allowed to proceed. When
you change the geometry of the model, ANSYS will again generate an error message. However, you will not
be able to change the PGR parameters to append the file. You must solve the analysis again, and write a
new PGR file.
When you choose to append to the PGR file, the current analysis filename is displayed. Changing this filename
will create a new PGR file and will prevent appending the data to your existing file. If you have changed the
loading on the model, the new data is appended as an additional results set, which can be accessed with
the Results Viewer, separately from the other data. If you have selected new PGR results items to be included
with the file, this data is added to each of the results sets. The changes to the result item availability are
written to each of the existing data sets and are available directly within the PGR file.
The PGR file append operations are controlled by the PGWRITE command, and can be accessed either via
the menu, as described above, or via the command line.
7.4. Additional POST1 Postprocessing
The following additional POST1 postprocessing techniques are covered in this section:
7.4.1. Rotating Results to a Different Coordinate System
7.4.2. Performing Arithmetic Operations Among Results Data
7.4.3. Creating and Combining Load Cases
7.4.4. Mapping Results onto a Different Mesh or to a Cut Boundary
7.4.5. Creating or Modifying Results Data in the Database
7.4.6. Splitting Large Results Files
7.4.7. Magnetics Command Macros
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