Mechanical APDL Basic Analysis Guide

CLEAR Clears all data from the variable and expression input area.

BACKSPACE Backspace from the current cursor location deleting preceding characters.

Computes the expression in the expression input area and stores the result

in the variable specified in the variable input area (STORE).

ENTER

8.2. Entering the Time-History Postprocessor

You enter the time history processor to process time or frequency related results data. Once you have
solved an analysis, ANSYS uses your results data to create a “Results File.” The active results file (.RST,
.RTH,*.RMG, etc.) is automatically loaded when you enter postprocessing. If the current analysis
contains no results file, you are queried for one. You can also use the file option to load any other results
file for processing.

8.2.1. Interactive

Selecting Main Menu> TimeHist PostPro starts the time-history postprocessor and loads the time-
history variable viewer. The following discussions of interactive mode deal with the variable viewer
portion of the Graphical User Interface (GUI). Alternate GUI methods are discussed in the appropriate
command descriptions. If you need to reopen the variable viewer while still in the time-history postpro-
cessor, click Variable Viewer in the TimeHist PostPro menu.

8.2.2. Batch

The command /POST26 opens the time-history postprocessor for batch and command line operations.

Notes:

• You must have your geometry loaded and a valid results file must be available in order to perform
  time-history post processing (interactive or batch)


• By default, the time-history processor looks for one of the results files mentioned in The General
  Postprocessor (POST1). You can specify a different file name using the FILE command (batch) or from
  the file menu of the variable viewer.


• The data sets and variable definitions you create in the time history postprocessor are maintained
  for the current ANSYS session.This allows you to move, for example, between POST1 and POST26
  without losing stored information (see the KEEP command for more information).


• If you define variables outside of the variable viewer, but want to use it for postprocessing, you must
  refresh the variable viewer by either pressing the F5 button on your keyboard with the variable
  viewer selected, or by choosing the refresh button in the variable viewer's toolbar.


• Use the Clear time-history Data button to remove all defined variables and return settings to their
  default values.

8.3. Defining Variables

Your time-history operations deal with variables, tables of result item versus time (or versus frequency).
The result item may be the UX displacement at a node, the heat flux in an element, the force developed
at a node, the stress in an element, the magnetic flux in an element, etc. You assign unique identifiers
to each of your variables. Up to 200 such variables can be defined. TIME is reserved for the time value,

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The Time-History Postprocessor (POST26)