Research Article
Analytical and Numerical Investigation of Lacing Wire Damage Induced Mistuning in Turbine Blade Packet
Table 14
Effect of lacing wire damage induced mistuning (for λ = 0.25) on natural frequencies (lacing wire at mid 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 | 1.8880 | 1.8866 | 1.8846 | 1.8820 | 1.8788 | 1.8751 | III | 1.9129 | 1.9095 | 1.9065 | 1.9040 | 1.9021 | 1.9006 |
| 2 | I | 4.6941 | 4.6941 | 4.6941 | 4.6941 | 4.6941 | 4.6941 | II | 4.6978 | 4.6974 | 4.6968 | 4.6960 | 4.6951 | 4.6941 | III | 4.7052 | 4.7041 | 4.7032 | 4.7025 | 4.7019 | 4.7015 |
| 3 | I | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | II | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | III | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 |
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