Hi @jousefm, @cjquijano,
so I’m back just after playing a bit.
I was quite amazed. I made a comparison between two different loading setups which represented the same effect on the shaft:
#1 “Remote force applied”: I applied 2×-450N in the Z direction at a distant point which represented a shear force and a torque as well.
#2 “Force and torque applied”: I applied 2×-450N in the Z direction and 207Nm moment at the center point of the shaft.
#1 Max. stress: 494MPa Max. displacement: 0.11mm
#2 Max. stress: 497MPa Max. displacement: 0.11mm
I find it really nice how the two simulations coincide! The sad thing is that >490 MPa stress is a bit too much for a normal steel shaft especially under alternating loads. The stress concentration at the key hole is quite massive I need to re-design the part.
So thanks again for supporting me!