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

2. Under Type, do the following:

1. Select Displacement, Velocity, or Acceleration.

2. For Face, Edge, Plane for Direction , select a reference entity.

If you select a planar face or a reference plane, you can specify excitations Along Plane Dir 1 ,Along Plane Dir 2 , or Normal to Plane .

If you select a straight edge, you can specify an excitation in its direction Along Edge .

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 Uniform Base Excitation.

2. Under Type, do the following:

1. Select Displacement, Velocity, or Acceleration.

2. For Face, Edge, Plane for Direction , select a reference entity.

If you select a planar face or a reference plane, you can specify excitations Along Plane Dir 1 ,Along Plane Dir 2 , or Normal to Plane .

If you select an edge, you can specify an excitation along the edge .

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 Uniform Base Excitation.

2. Under Type, select Displacement, Velocity, or Acceleration.

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

1. For Unit , select the desired unit.

2. Click the button for a global direction and type a value for the Power Spectral Density of excitation.

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:

1. Click Edit Color to select a color.

2. Set Symbol Size .

6. Click .

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

2. Under Acceleration, do the following:

1. For Unit , select the desired unit.

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

3. 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 the variation is applied to all specified values. Click Graph to view the variation in all selected directions.

4. Under Symbol Settings, do the following:

1. Click Edit Color to select a color.

2. Set Symbol Size .

5. Click .