Research Article
Vibration Characteristics of Hydrodynamic Fluid Film Pocket Journal Bearings
Table 1
Sample rotor bearing data.
| Rotor: Young’s modulus = 210 GPa, density = 7850 kg/m3 | No. | Length (m) | Diameter (m) | Disk mass (kg) | Disk Ip (kg-m2) | Disk Id (kg-m2) |
| 1 | 0.14 | 0.135 | 0 | 0.0358 | 0.0436 | 2 | 0.16 | 0.18 | 0 | 0.1294 | 0.1329 | 3 | 0.148 | 0.18 | 0 | 0.1193 | 0.1131 | 4 | 0.148 | 0.18 | 0 | 0.1193 | 0.1131 | 5 | 0.115 | 0.258 | 8.392 | 0.5447 | 0.3336 | 6 | 0.115 | 0.277 | 1.185 | 0.5447 | 0.3336 | 7 | 0.115 | 0.277 | 1.185 | 0.5447 | 0.3336 | 8 | 0.106 | 0.328 | 11.87 | 1.291 | 0.7217 | 9 | 0.106 | 0.353 | 0.921 | 1.291 | 0.7217 | 10 | 0.049 | 0.345 | 0 | 0.535 | 0.2747 | 11 | 0.076 | 0.44 | 89.29 | 8.643 | 4.408 | 12 | 0.058 | 0.5 | 47.73 | 6.559 | 3.317 | 13 | 0.15 | 0.556 | 93.86 | 20.57 | 8.875 | 14 | 0.224 | 0.556 | 139.5 | 30.48 | 14.42 | 15 | 0.2 | 0.556 | 111 | 25.38 | 12.52 | 16 | 0.219 | 0.556 | 128.4 | 28.57 | 14 | 17 | 0.217 | 0.556 | 126.6 | 28.19 | 13.88 | 18 | 0.216 | 0.556 | 122.8 | 27.57 | 13.77 | 19 | 0.215 | 0.556 | 119.1 | 27.05 | 13.66 | 20 | 0.214 | 0.556 | 119.1 | 26.87 | 13.59 | 21 | 0.221 | 0.547 | 126.7 | 26.83 | 13.6 | 22 | 0.198 | 0.55 | 117.2 | 24.64 | 12.55 | 23 | 0.159 | 0.704 | 4.15 | 30.62 | 16.34 | 24 | 0.159 | 0.704 | 4.15 | 30.62 | 16.34 | 25 | 0.16 | 0.497 | 249.4 | 30.81 | 16.46 | 26 | 0.015 | 0.345 | 0 | 0.1638 | 0.0821 | 27 | 0.168 | 0.353 | 1.467 | 2.056 | 1.335 | 28 | 0.168 | 0.353 | 1.467 | 2.056 | 1.335 | 29 | 0.17 | 0.353 | 1.484 | 2.081 | 1.359 | 30 | 0.187 | 0.315 | 0 | 1.419 | 1.043 | 31 | 0.07 | 0.385 | 38.39 | 3.034 | 1.559 | 32 | 0.238 | 0.315 | 0 | 1.806 | 1.59 | 33 | 0.238 | 0.315 | 0 | 1.806 | 1.59 | 34 | 0.067 | 0.42 | 25.1 | 2.904 | 1.489 | 35 | 0.065 | 0.58 | 67.21 | 12.73 | 6.436 | 36 | 0.07 | 0.58 | 131 | 22.1 | 11.16 |
| Bearings: , ( for pocket bearings) | No. | Length (m) | Diameter (m) | Clearance (mm) | Viscosity (Ns/m2) | Location |
| 1 | 0.092 | 0.18 | 0.1327 | 0.014 | 2 | 2 | 0.204 | 0.315 | 0.2322 | 0.014 | 32 |
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