November 25, 2019 at 3:24 pmDeepeshSubscriber
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.
November 25, 2019 at 6:09 pmpeteroznewmanSubscriber
Bearings have a field to type in the bearing stiffness, so you are adding flexibility to Case 1.
Remote displacements can be of Type: Rigid or Deformable, but in either case, you are not adding flexibility in Case 2.
The different flexibility between Case 1 and 2 will lead to different results.
November 28, 2019 at 1:55 amDeepeshSubscriber
Is there any value of stiffness that I can give to bearings so that it acts exactly as Rigid one just like remote displacement?
November 28, 2019 at 3:04 ampeteroznewmanSubscriber
Use a very large stiffness value, but not too large or you will cause numerical problems.
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