structural static analysis hub

[alequatt]

hello to all, I would like to evaluate the tensions on this component generated by the torque moment, which of course is transmitted by flange tab. I can't add other bodies in contact, what are the most correct constraints? Can you insert the effect of bullion preload without inserting other bodies?
Thank you.

 

[meccanicamg]

with lower level fem systems, which would not be your case, if you create surfaces around the holes, equal to the size of the washer or the nut of support you can put a force equal to the axial load of the screw itself.
I use solidworks that has all the possibilities of application, including screws etc. But I still put my forces on hand. I often use freecad with calculix, free program with the fem module with few constraints, so you have to act forcefully with the surfaces.
As for constraints, you have to apply a force along the side of the tabbed and a flange bond blocked as a reaction to the generated pair. evaluate whether to react to cut the screws or not.
think about exchange actions and you will see that it is not difficult.

 

[alequatt]

with lower level fem systems, which would not be your case, if you create surfaces around the holes, equal to the size of the washer or the nut of support you can put a force equal to the axial load of the screw itself.
I use solidworks that has all the possibilities of application, including screws etc. But I still put my forces on hand. I often use freecad with calculix, free program with the fem module with few constraints, so you have to act forcefully with the surfaces.
As for constraints, you have to apply a force along the side of the tabbed and a flange bond blocked as a reaction to the generated pair. evaluate whether to react to cut the screws or not.
think about exchange actions and you will see that it is not difficult.

applying a force on the clamp surface of the tongue also generates an inverosimile bending, to recreate the coupling with the tree I gave a support "compression only" that prevents the piece from "enter" in the inner diameter of the undeformed piece. I put on the tongue surface a "frictionless" support, and I applied a torque on the flange face. for now I have not been able to reproduce the preload of bolts, I think I will do as you say, I create surfaces and insert the forces of preload. as deformation (which here is amplified) seems quite consistent.