Create an FKM Analysis Case
-
From the standard area of the action bar, click Scenario
.
-
From the Durability section of the action bar, click Create FKM Case
.
-
Accept the default name for the FKM analysis case, and click
OK.
The context selector switches to the FKM analysis case.
Define the FKM Fatigue Assessment
-
From the Durability section of the action bar, click FKM Fatigue Assessment.
-
Accept the default values in the FKM Fatigue
Assessment dialog box, and click
OK.
-
From the Durability section of the action bar, click Weld Fillet Set
.
-
Select the fillets that represent the welds, as shown below.

The weld fillet sets appear in the tree under the Interactions node of the FKM analysis
case.
-
From the Durability section of the action bar, click Fatigue Loading
.
-
Click Superposition
.
In this type of fatigue loading event, the app superimposes all the loads and signals rather than organizing the events
in series.
A superposition event appears in the fatigue loading
history.
-
Double-click the Repeats row under the superposition
event, and change the value to 12,000.
This value represents the number of loading events that the fatigue
calculation evaluates.
-
Right-click the superposition event, and select Add
frame.
Frames specify which stress results to include in a superposition
event.
-
From the Frames dialog box, select the
Left load case and click
OK.
-
Right-click the frame, select Add signal values, and
enter 1, 0.
The 1, 0 values create a "pulse" signal where the
stress alternates between on (1) and off
(0).
-
Similarly, add superposition events for the Mid and
Right load cases.
-
Click OK.
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