To add a time history load to the current primary
load case, use the following procedure.
Select the current
load case in the program status bar.
-
Either:
The
Add New Load Items dialog opens.
-
Select the
Time History tab.
-
Select the
Load Type:
-
Time Load
for a forcing function that applies forces or moments to joints
-
Ground
Motion is applied global to all supports as an acceleration type
-
Select Direction in which the load is applied.
Time Load types are applied in FX, FY, or FZ for forces and MX,
MY, or MZ for moments. Ground motion types are applies in one of the three
global directions.
-
Select the arrival time for this load from the arrival times in
the time history definition parameters.
-
Select the load definition type from the Defined Types drop-down
list.
The list includes the definition number and function type.
- Optional:
Select the results type from the Response Types drop-down list.
- Optional:
Type a Force Amplitude Factor to multiply for the forces, moments,
or accelerations at the joints.
-
Click
Add.
You must assign the time history load to the joints to which it applies.