Research Article
Study on Preload of Bolted Connections in Pitch Bearing Based on Vibration Modal Analysis
Table 6
Natural frequency and vibration mode.
| | Order | Experiment with the mode shape | Experiment frequency (Hz) | Simulate mode shapes | Simulation frequency (Hz) | Error (%) |
| | 1st mode | | 19,881 | | 21,995 | 9.6 |
| | 2nd mode | | 19,902 | | 21,996 | 9.5 |
| | 3rd mode | | 37,789 | | 33,683 | 10.8 |
| | 4th mode | | 40,827 | | 33,732 | 17.4 |
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