In epicyclic gear sets aimed at aeronautical applications,planet-gears are generally supported by spherical roller bearingswith bearing outer race being integral to the gear hub. This paperpresents a new method to compute roller load distribution in suchbearings where the outer ring can’t be considered rigid. Based onwell known Harris method, a modified formulation enables to accountfor centrifugal effects due to planet-carrier rotation and toassess roller loads at any position throughout the rotation cycle.New model load distribution predictions show discrepancies withresults presented by Harris, but are well correlated with 1D and 3DFinite Element Models. Several results validate the use ofsimplified analytical models to assess the roller load distributioninstead of more time consuming Finite element Models. The effectsof centrifugal effects due to planet-carrier rotation on rollerloads are also analyzed. Finally the impact of the positions ofrollers relative to the gear mesh forces on the load distributionis shown.
- Edition:
- 10
- Published:
- 10/01/2010
- Number of Pages:
- 11
- File Size:
- 1 file , 420 KB
Reviews
There are no reviews yet.