RD-E: 5500 Fan Blade Rotation Initialization and Impact

Impacts of rotating structures usually happen while the structure is rotating at a steady state. When the structure is rotating at very high speeds, it is necessary to include the centrifugal force field acting on the structure to correctly account for the initial stresses in the structure due to rotation.

RD-E: 5501 Fan Blade Rotation Initialization shows how to use the /LOAD/CENTRI option in Radioss to create the centrifugal force field and then apply an initial and imposed velocity to the rotating fan blades to correctly initialize the steady state rotating condition.

In RD-E: 5502 Rotating Fan Blade Ice Impact and Failure, the rotating fan blades from RD-E: 5501 Fan Blade Rotation Initialization are then impacted by a large hailstone/ice ball modeled using SPH particles. To correctly model the failure of the blades, a Radioss material failure model is applied to them.


Figure 1.