Combination Criteria for Load Histories:

You can define different load histories for multiple load sets on the Fatigue Analysis Definition dialog box.

The following load history combinations are possible:

• Any combination of constant amplitude histories.

• Combinations of variable amplitude histories with the same number of steps or values in every load set.

• Combinations of variable amplitude histories with the same number of steps combined with a user defined constant amplitude history. The minimum and maximum load factor for constant user defined amplitude in every load set must be equal.