1. Right-click the Load/Restraint folder and select Selected Base Excitation.

2. Under Type, do the following:

3. Under Displacement, Velocity, or Acceleration do the following:

   1. For Unit , select the desired unit.

   2. Click the button for a direction and type a value.

4. Under Variation with Time, select:

   • Linear to vary the excitation linearly from 0 at time 0 to its specified value at the end of the solution period.

   • Curve to specify your own variation or select a library curve. Click Edit to modify the curve.

NOTE: The shape of variation is applied to all specified values. Click Graph to view the variation in all selected directions.

5. Under Symbol Settings, do the following:

   1. Click Edit Color to select a color.

   2. Set Symbol Size .

6. Click .

1. Right-click the Load/Restraint folder and select Selected Base Excitation.

2. Under Type, do the following:

   1. Select Displacement, Velocity, or Acceleration.

   2. For Restraint , select a restraint from the list of admissible restraints.

3. Under Displacement, Velocity, or Acceleration, do the following:

   1. For Unit , select the desired unit.

   2. Click the button for a direction and type a value.

4. Under Phase Angle, do the following:

   1. For Unit, select the desired unit.

   2. For Angle, type a value.

5. Under Variation with Frequency, select:

   • Constant to specify constant excitation for the full range of operating frequencies.

   • Curve to specify your own variation or select a library curve. Click Edit to modify the curve.

NOTE: The shape of variation is applied to all specified values. Click Graph to view the variation in all selected directions.

6. Under Symbol Settings, do the following:

   1. click Edit Color to select a color.

   2. Set Symbol Size .

7. Click .

1. Right-click the Load/Restraint folder and select Selected Base Excitation.

2. Under Type,

1. Select Displacement, Velocity, or Acceleration.

2. For Restraint , select a restraint from the list of admissible restraints.

Admissible restraints are defined with respect to the global coordinate system.

3. Under PSD Displacement, PSD Velocity, or PSD Acceleration, do the following:

4. Under Variation with Frequency, select:

   • Constant to specify constant excitation for the full range of operating frequencies.

   •  Curve to specify your own variation or select a library curve. Click Edit to modify the curve.

NOTE: The shape of the variation is applied to all specified values. Click Graph to view the variation in all selected directions.

5. Under Symbol Settings, do the following:

6. Click .