Modifying the output requests

Because this is a dynamic analysis in which the transient response of the frame is of interest, it is helpful to have the displacements of the center point written as history output. Displacement history output can be requested only for a preselected set. You will use the set named center, which was created earlier while assigning the load.

This task shows you how to:

Create a set (if necessary)

  1. In the Model Tree, expand the Assembly container and double-click the Sets item.

    The Create Set dialog box appears.

  2. Name the set center, accept the default selection of Geometry, and click Continue.

    Note:

    For meshed parts you can define sets that are based on either the geometry or the mesh. If you modify the mesh, you must redefine a mesh-based set. However, a geometry-based set will update automatically. For unmeshed parts only geometry-based sets are available.

  3. In the viewport, select the point at the center of the bottom edge of the truss. In the prompt area, click Done when you are finished.

Add displacements to the history output request

  1. In the Model Tree, click mouse button 3 on the History Output Requests container and select Manager from the menu that appears.
  2. In the History Output Requests Manager dialog box that appears, click Edit.

    The history output editor appears.

  3. Under the Domain field, select Set. Abaqus automatically provides a list of all the sets created for a given model. Choose the set named center.
  4. Under the Frequency field, select Every n time increments and set the value of n to 1 to write the output at every increment.
  5. In the Output Variables region, toggle off the Energy output and click the arrow to the left of the Displacement/Velocity/Acceleration category to reveal history output options for translations and rotations.
  6. Toggle on UT, Translations to have the displacements for the selected set be written as history output to the output database file.
  7. Click OK to save your changes and to close the dialog box. Dismiss the History Output Requests Manager.