Creating and Running Vibration Analyses

The forced vibration analysis sets up the vibration reference configuration for your model. When you create a vibration analysis, Adams Vibration designates input and output locations. These locations are used when you perform the vibration analysis. Adams Vibration automatically performs a normal modes analysis before performing a forced vibration analysis.

To create and run a forced vibration analysis:

1. Click the Plugins tab on the Adams View ribbon.
2. From the Vibration container, click Vibration tool Test Vibration Analysis.
The Perform Vibration Analysis dialog box appears.
3. Select New Vibration Analysis.
4. In the corresponding text box, enter .satellite.vertical.
5. For Operating Point, select Assembly.
This linearizes the model around an assembled configuration.
6. Select Forced Vibration Analysis.
7. Select Damping.
8. Right-click the Input Channels text box, point to Input_channel, point to Guesses, and then select input_y.
Adams Vibration inserts input_y in the Input Channels text box.
9. Right-click the Output Channels text box, point to Output_channel, point to Guesses, and then select *.
Adams Vibration inserts all the output channels you created earlier into the Output Channels text box.
10.  Select Logarithmic Spacing of Steps.
11.  Under Frequency Range (hz), in the Begin text box, enter 0.1.
12.  In the End text box, enter 1000.
13.  In the Steps text box, enter 400.
14.  To specify parameters for modal energy, select Modal Energy Computation.
Adams Vibration displays the Modal Info Computation dialog box.
15.  Select Compute Modal Energy and Kinetic Energy, and then select OK.
16.  In the Perform Vibration Analysis dialog box, select OK.
Adams Vibration performs a forced vibration analysis. The process runs quickly. If no error messages appear, you can assume the vibration analysis completed correctly. If you receive error messages, correct the problem, and rerun your analysis.