Mechanical APDL Basic Analysis Guide

(Axel Boer) #1

and FREQ is reserved for the frequency value. All other identifiers must be unique, and can be made
up of 32 letters and characters. If you don't supply a unique identifier, ANSYS will assign one. In addition
to the unique identifiers, ANSYS uses numerical indices (reference numbers) to track and manipulate
the variables. These numbers can be used interchangeably with the identifiers at the command level,
and in some interactive operations. The numerical index is displayed, along with any name you choose
in the data properties dialog box.


8.3.1. Interactive


Follow these steps to enter time-history data using the variable viewer.



  1. Click on the Add Data button.


Result: The “Add Time-History Variable” data selection dialog appears. Use the result item tree
provided in the “Result Item” frame of this dialog to select the type of result you wish to add.
Result items are presented in a hierarchical tree fashion from which you can select many
standard result items (only result items available in your analysis will be displayed). A “favorites”
section is provided to allow you to access previously selected data items. The last fifty entries
are stored here.


  1. Specify a name for the result item and provide additional information. The “Variable Name” field in
    the “Result Item Properties” area will display an ANSYS-assigned name, however, this field can be
    edited to use any name you choose. You will be asked to overwrite existing data if the name chosen
    is not unique. Depending on the type of result chosen from the “Result Item” area above, you may
    provide additional information about the item, such as the appropriate shell surface, force component
    or layer number information.

  2. Click on the OK button.


Result: If entity information is required, a picking window will appear, and you can choose the
appropriate node and/or element from your model. The “Add Time-History Variable” window
then closes and the appropriate variable appears in the variable viewer's variable list area.

If you wish to enter more than one variable definition, click Apply, and the results data will be
defined and entered into the variable list area, while still keeping the “Add Time-History Variable”
window open.


  1. (optional) Add or modify properties information.


You may, depending on the type of results variable, wish to supply additional time-history
properties information. Time History Properties include specific variable information, X- axis
definition data and list definition data. This information can be edited at any time via the Data
Properties button.

Notes:



  • You can see all of your defined variables in the Variable List area. Specific element and node inform-
    ation, along with the appropriate range of values are all displayed here.

  • When you define your variable information with the variable viewer, you can easily modify and change
    various properties by clicking on the variable and using the Data Properties button. The subsequent
    “Time History Properties” tabbed dialog box allows you to modify or add specific (Variable) results
    data properties and also to modify global properties (X-Axis and List).


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Defining Variables
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