Feasible whirl or rotors in auxiliary bearings
Conference
·
OSTI ID:390760
- Univ. of Virginia, Charlottesville, VA (United States)
A general condition for steady circular whirl in auxiliary bearing clearances is developed for rotor/bearing systems which are circularly isotropic. Computed with a linear model, this condition is evaluated without transient simulation. It is established that such whirl, in the absence of other forcing mechanisms, is friction driven. As a result, the whirl must be backward and generally at a frequency which is very close to one of the resonances of the rotor/bearing system (neglecting the clearance). For lightly damped rotors, this frequency is most likely to be just below the lowest resonant frequency. The effect of dissipation in the auxiliary bearing is clearly demonstrated.
- OSTI ID:
- 390760
- Report Number(s):
- CONF-950852--
- Country of Publication:
- United States
- Language:
- English
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