Research Article
A Torsional Vibration Measurement Method for Rotating Blades Based on Blade Tip Timing
Table 7
Parameters of numerical simulation with bending of rigidity axis.
| | | Properties | Value |
| | Presetting angle of blades (rad) | 0.6117 | | Axial length of the blade tip (mm) | 28 | | Vibration amplitude of torsion angle of the blade tip (rad) | 0.05 | | Vibration frequency of torsion angle of the blade tip (Hz) | 333.18 | | Axial distance between point A and B (mm) | 3 | | Maximum axial distance between point B and X (mm) | 10 | | Axial distance between point B and D′ (mm) | 9 | | Maximum axial distance between point D′ and D″ (mm) | 0.5 | | Rotation frequency of the rotating shaft (Hz) | 80 | | Number of rotation cycles of the rotating shaft | 80 | | Number of virtual BTT sensors | 25 | | Number of real BTT sensors | 4 |
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