Bearing and Remote Displacement (Harmonic, Modal Analysis)

Consider a Solid Shaft. I performed harmonic analysis on it. To fix ends of the shaft, I used Bearings in Case 1 and Remote displacement in case 2.

In Case 1, I inserted the plane of rotation 

In case 2, I restricted every motion except the one for the rotation

But in both the cases, the answers I got in Deformation, stress were different.

Can someone explain me how and why is it so? because since both the options I used were to do same things i.e restrict particular motion and allow particular motion.


Thanks in advance.


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