ROTOR DYNAMICS OF TURBOMACHINERYDownload article...
- Leontiev M.K., Tereshko A.G., Research of characteristics of elastic rings mounted in rotor bearings of gas-turbine engines
The problem of determination of an elastic ring stiffness mounted in gas-turbine engines bearings is considered. Analytical solutions give flexibility of an elastic ring as a curved beam with pinned-end supports. At once practice shows occurrence of abrasion on ring ledges during exploitation. It means the response of a ring in rotor precession conditions is more complicated comparing to the beam bending only. The FEM model of an elastic ring placed between two stiff rings is prepared. Results of analysis show the large difference between flexibilities obtained by analytical solution and FEM statement when rings have contact interactions. The flexibility of elastic rings also strongly depends on assembling conditions.
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