Hi all,

I am currently working on a thesis where I am drawing an ULM aircraft.

Now, I'm doing a design study on the lift struts. When I do a static simulation, I get results for stress as seen in the picture below.

But when I'm running my design study with different force loads, I don't get values for stress. Even though I've added a stress sensor for model max in the constraints.

The minimum factor of safety gives me values but stress doesn't. This makes no sense to me...

Did someone had a similar problem and knows how to solve this? (For the lift strut, I used weldments.)

Thank you!

Karel