Defining file imperfections

You can define file imperfections on an assembly.

See Also
In Other Guides
Introducing a Geometric Imperfection into a Model
  1. From the main menu bar in the Interaction module, select Special Imperfection Create.
  2. In the Create Imperfection dialog box that appears, name the imperfection, select File Imperfection, and click Continue.
  3. Select the points for which you want to define a file imperfection using one of the following methods:

    • Select the points in the viewport. When you have finished selecting, click mouse button 2.

    • To select from a list of existing sets, do the following:

      1. Click Sets on the right side of the prompt area to display the Region Selection dialog box containing a list of available sets.

      2. Select the set of interest, and click Continue.

        Note: The default selection method is based on the selection method you most recently employed. To revert to the other method, click Select in Viewport or Sets on the right side of the prompt area.

    The Edit Imperfection dialog box appears.

  4. Select Result file, which is an .odb file that is to be used in the imperfection definition.
  5. Select the Step and Increment of the results file from which the displacement data are to be read to define the imperfection.
  6. In the Data table, enter the following:

    Mode Number

    Enter the mode number.

    Scaling Factor

    Enter the scaling factor. Repeat this row in the table as often as necessary to specify the imperfection as a linear combination of mode shapes.

  7. Click OK to save your data and to close the dialog box.