Research Article
Analytical and Numerical Investigation of Lacing Wire Damage Induced Mistuning in Turbine Blade Packet
Table 11
Effect of lacing wire damage induced mistuning (for λ = 1) 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 | 1.9978 | 1.9847 | 1.9668 | 1.9430 | 1.9125 | 1.8751 | III | 2.1884 | 2.1646 | 2.1433 | 2.1254 | 2.1111 | 2.1002 |
| 2 | I | 4.6941 | 4.6941 | 4.6941 | 4.6941 | 4.6941 | 4.6941 | II | 4.6993 | 4.6987 | 4.6979 | 4.6968 | 4.6956 | 4.6941 | III | 4.7098 | 4.7083 | 4.7070 | 4.7060 | 4.7052 | 4.7045 |
| 3 | I | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | II | 7.8573 | 7.8570 | 7.8566 | 7.8561 | 7.8555 | 7.8548 | III | 7.8625 | 7.8617 | 7.8611 | 7.8606 | 7.8602 | 7.8599 |
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