Research Article
Vibration Characteristics of Hydrodynamic Fluid Film Pocket Journal Bearings
Table 2
Damped natural frequencies of a rotor supported by elliptic or pocket bearings ((1) refers to type 1, etc.).
| Speed (rpm) | 1000 | 2000 | 3000 | 4000 | 5000 | Elliptic | Real, Imag (rad/s) |
| Mode 1 | | | | | | Mode 2 | | | | | | Mode 3 | | | | | |
| Pocket | Real, Imag (rad/s) |
| Mode 1 | | | | | | (1) | | | | | | (2) | | | | | | Mode 2 | | | | | | (1) | | | | | | (2) | | | | | | Mode 3 | | | | | | (1) | | | | | | (2) | | | | | | Mode 4 | | | | | | (1) | | | | | | (2) | | | | | |
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