Daniel Shaw
Ansys Employee

For time-based loading (Constant Amplitude, Time Series, and Time Step), DesignLife calculates the life as repeats of the loading cycle.  Thus, for time series loading, life is reported as repeats of the load history.  If you know the relationship between the load history and actual time, you can easily convert the loading cycle repeats to time.  If you want DesignLife to do the conversion, you can set the Number of equivalent units in the DesignLife post-processor. DesignLife will just multiply the calculated repeats by the NumEquivUnits value and report that value.

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