Research Article
Dynamic Characteristics Analysis of the Coupled Lateral-Torsional Vibration with Spur Gear System
Table 1
Structure and dynamics parameters of spur gear rotor bearing system.
| Gear parameters | Number of teeth | | 100 | | 25 | Mass (kg) | | 667.8 | | 141.1 | Inertia (kg⋅m2) | | 44.4 | | 0.207 | Modulus | | 8 | Eccentricity | | 2.0 × 10−6 | | 2.0 × 10−5 | Mesh stiffness | | 6.0 × 108 | Damping ratio | | 0.1 | Transmission error | | | Mean | | 2 × 10−5 | Amplitude | | 3 × 10−5 | Angular speed | | 2000 |
| Shaft parameters | Bending stiffness | | 2.5 × 108 | |
1.6 × 107 | Damping ratio | | 0.07 | Torsional stiffness | | 4.3 × 108 | | 2.5 × 107 | Damping ratio | | 0.07 |
Input/output parameters | | | Rotational inertia | | 17.8 | | 5.3 | Speed (r/min) | | 500 | | 2000 | Gear on the shaft position | , |
| Bearing parameters | Lumped mass | , | 115.2 | , | 73.2 | Bearing stiffness | , | 6.0 × 1010 | , | 2.0 × 1010 | Damping ratio | | 0.01 | Bearing contact stiffness | | 13 × 109 | | 10 × 109 | Number of bearing rolling balls | | 14 | | 10 | Bearing 1 radius (m) | | 0.25 | | 0.2 | Bearing 2 radius (m) | | 0.125 | | 0.1 | Bearing clearance (m) | |
2 × 10−7 | | 5 × 10−7 |
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