I am trying to model a bolted connection between a
centrifugal fan shaft and impeller.
To reduce the calculation times, I want to eliminate the
complicated impeller geometry and replace it with an external mass
applied to the outer diameter face of my simplified fan
The center of mass of the remote mass happens to be exactly at the
origin. This is correct. What appears to be happening is that the
centrifugal loading of the remote mass is applied in the wrong
direction, pulling the outer face of the centreplate towards the
origin, rather than away from it.