Applying Rotational Accelerations

You can apply a rotational acceleration to prescribe an angular acceleration about a specified axis. The model must have at least one rotational degree of freedom.

Rotational accelerations cannot be defined in general static steps.

See Also
About Applied Rotational Accelerations
Creating Tabular Amplitudes
In Other Guides
Support Selection
  1. From the Loads section of the action bar, click Applied Rotational Acceleration .
  2. Optional: Enter a descriptive Name.
  3. Select the geometry supports in the model.

    In a frequency step, you can apply the rotational acceleration to a displacement restraint created as a secondary base. Select Sim feature as the type of support, then select the appropriate displacement restraint from the window that appears.

  4. Enter the Rotational magnitude.
  5. Select a Degree of Freedom representing the axis of rotation for the acceleration within the selected axis system.
  6. Optional: Enter a Scale factor that is applied to the magnitude in each step.
  7. Select an Amplitude that defines the magnitude during the step.
  8. Optional: For harmonic response steps, specify the Phase angle for the amplitude curve. The phase angle determine the real (in-phase) and imaginary (out-of-phase) parts of the magnitude. A phase angle of 0ยบ indicates a value with no imaginary component.
  9. Click OK.