Hello,

I am trying to perform a simple fatigue analysis on a bike frame I have modeled using structural members. I performed a static analysis with all members being treated as beams and everything worked out fine. I then attempted to perform a fatigue analysis but after trying to add an event, I received the following error message; You need one or more static, nonlinear or linear dynamic to perform Fatigue Analysis. From reading I understand that apparently fatigue analysis doesn't support beams but I also want to avoid treating everything as a solid or converting to trusses as this would make the results less accurate.

I have looked through other posts and have found the similar problem but no good explanation for the solution as can be seen in the following link;

Can anyone explain how to perform a fatigue analysis of a frame made from beams?

Things to note:

4 of the structural members do not have the required slenderness ratio to be considered beams, not sure if this affects the results at all, any input on this would be appreciated