Research Article
Analytical and Numerical Investigation of Lacing Wire Damage Induced Mistuning in Turbine Blade Packet
Table 9
Effect of lacing wire damage induced mistuning (for λ = 0.25) on natural frequencies (lacing wire at 2/3rd of blade span).
| Mode | Submode | values | = 0 | = 0.2 | = 0.4 | = 0.6 | = 0.8 | = 1.0 |
| 1 | I | 1.8751 | 1.8751 | 1.8751 | 1.8751 | 1.8751 | 1.8751 | II | 1.9082 | 1.9044 | 1.8994 | 1.8928 | 1.8847 | 1.8751 | III | 1.9694 | 1.9611 | 1.9538 | 1.9478 | 1.9431 | 1.9396 |
| 2 | I | 4.6941 | 4.6941 | 4.6941 | 4.6941 | 4.6941 | 4.6941 | II | 4.6954 | 4.6952 | 4.6950 | 4.6948 | 4.6945 | 4.6941 | III | 4.6980 | 4.6976 | 4.6973 | 4.6970 | 4.6968 | 4.6967 |
| 3 | I | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | II | 7.8554 | 7.8553 | 7.8552 | 7.8551 | 7.8549 | 7.8548 | III | 7.8567 | 7.8565 | 7.8563 | 7.8562 | 7.8561 | 7.8560 |
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