Research Article
Analytical and Numerical Investigation of Lacing Wire Damage Induced Mistuning in Turbine Blade Packet
Table 8
Effect of lacing wire damage induced mistuning (for λ = 0.1) on natural frequencies of the blade packet (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 | 1.8886 | 1.8870 | 1.8849 | 1.8823 | 1.8790 | 1.8751 | III | 1.9146 | 1.9110 | 1.9078 | 1.9053 | 1.9032 | 1.9017 |
| 2 | I | 4.6941 | 4.6941 | 4.6941 | 4.6941 | 4.6941 | 4.6941 | II | 4.6946 | 4.6946 | 4.6945 | 4.6944 | 4.6942 | 4.6941 | III | 4.6957 | 4.6955 | 4.6954 | 4.6953 | 4.6952 | 4.6951 |
| 3 | I | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | 7.8548 | II | 7.8550 | 7.8550 | 7.8549 | 7.8549 | 7.8548 | 7.8548 | III | 7.8555 | 7.8555 | 7.8554 | 7.8553 | 7.8553 | 7.8553 |
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