Research Article
Frequency and Vibration Characteristics of High-Speed Gear-Rotor-Bearing System with Tooth Root Crack considering Compound Dynamic Backlash
Table 3
Amplitude of the sideband in θ1 direction.
| | Crack depth (%) | 8fm − 6fr2 (Hz) | Amplitude (×10−6 m) | 8fm − 3fr2 (Hz)(a) | Amplitude (×10−6 m) | 8fm + 3fr2 (Hz)(a) | Amplitude (×10−6 m) | 8fm + 6fr2 (Hz)a | Amplitude (×10−6 m) |
| | 0 | 11550 | ≈0 | 11775 | ≈0 | 12225 | ≈0 | 12450 | ≈0 | | 10 | 230.4%
16.2% | 0.0913 | 172.0%
10.0% | 0.1103 | 159.6%
−24.5% | 0.1489 | 130.0%
−43.3% | 0.1741 | | 20 | 0.3017 | 0.3009 | 0.3866 | 0.4004 | | 30 | 0.3503 | 0.3309 | 0.2918 | 0.2270 |
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aThe first line is the frequency of sideband, respectively, and the other lines indicate the growth rate when every crack 10% increases.
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