Bolt pretension - axial force due to preload?!

[ahkrit]

Hello.

I am trying to model a simple preload of a screw in a double lap joint. As i apply the preload of 38kN for a M12 screw, it gives back an axial force at the end of app. 160N.
I am wondering if it is realistic. Deformation and everything looks good, also tried with different contact properties, but it gives back the same result.
I cannot really imagine that in reality i could pull 16 kg horizontally by tightening a screw...
Ofcourse if only one end is fixed then there is no force but then a displacements occures at the not fixed end.. what i woould not expect form screw preload only.

Has someone any idea what i did wrong? Or do I imagine that in reality wrong?

Thanks!

Input files and a picture attached from my model.

 

[FEA way]

I don't work with real-life bolted connections but to me at first glance, this analysis looks correct. If you want to confirm the results, try to carry out some tests or use analytical estimations. You could also use different modeling approaches to simulate the preload and the bolt itself.