When carrying out the fatigue design, I am getting very little or no utilization of my members.
What is the reason for this?

Answer

The RF-STEEL Fatigue Members add-on module requires a stress cycle or a stress range for the fatigue analysis.


To be able to determine them, the input of the load cases to be designed has to be checked.

For example, if only the load cases with the actual operating load have been entered for the design and the self-weight of the structure (here e.g. LC1) was not selected, this effect may occur.


If the load case "Self-Weight" is used for the calculation of the stress cycle, a much higher utilisation may result.


In this context, reference should also be made to result combinations selected for the design, if applicable. They should also be created so that the governing stress cycle in the module can be determined.



Keywords

Fatigue Fatigue design Stress range Stress range Stress cycle

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