Tutorial A3: Run the Analysis and Post-Process the Results

1. Save the model.
2. Right-click on Bracket Analysis and choose Solve in Nastran.
3. When you see the dialog "Nastran Solution Complete", click OK to load the results into Autodesk Inventor Nastran.

Post-Process the Results

1. Right-click on XY Plot and select New.
2. Click a node at the top of the bracket (side with the hole). The ID should appear in the input box.

   

3. Make sure that Start Set is set to STEP 1 and the End Set is set to STEP 19.
4. Select LINEAR ACCELERATION from the Result Data drop-down menu.
5. Select TOTAL from the Component drop-down menu.

   

6. Click the Show XY Plot button. Your results should look as shown below.

   

   Note the large spike just after 200 Hz. This peak coincides with a normal modes analysis result of ~214 Hz.

This concludes Modal Frequency Response of a Bracket.

The following summarizes the main topics covered:

• Create a modal frequency response analysis.
• Apply a frequency dependent load.
• Apply damping to a structure.
• Define a cluster between modes of interest for a modal frequency response solution.
• Create a base motion problem using the direct approach.