rotational velocity boundary condition

- November 6, 2019 at 5:00 pm
  
  Arjunvy
  Subscriber
  
  Hi,
  
  I want to study the deformation of the blower blades when a rotational velocity of 255 rad/s is applied through a rotating shaft.
  
  I was not knowing that we can use the rotational boundary condition to apply a rotational velocity. So since the radius will be varying throughout the geometry I calculated a radius using geometric mean and applied a centrifugal force of 1720 N throughout the body.
  
  But then I got to know about the rotational velocity BC , so I am applying a rotational velocity of 255 rad/s at the CG which is at the center of the blower. I am applying a fixed BC at the center where the blower gets attached to the shaft.
  
  Now I solved the problem using the centrifugal force and using the rotational velocity boundary condition. I am getting the same stress value but getting different deformation values for both the cases. So can you help me understand where exactly I am going wrong?