My company is designing windturbines of 600kW. For our
certification process, we need to do a series of FEA analyse.
Currently i am working on the tower structure.
As some of you know there is a yaw bearing mounted on the tower
top. The surface of the towertop which makes contact with the
bearing, needs to be constrainted in a way that the entire surface
can tilt or move horizontly and/or vertically. So no local
The tower bottom is fixed.
For the loads working on the towertop, i need to define a moment
which will work on that constrainted surface. The points which lare
located far from the axis have to suffer more stress than the ones
closer to the axis. It looks a bit like a bearing load, but that
the force is higher as we move to the vertical plane.
Can please somebody help me to explain me if I need to define a
constarint plane and conect the surface at the towertop to this. By
doing so simulated a constrainted surface? When i tried this
approach Cosmos declared that i cannot implement a force/moment on