Research Article
Analytical and Numerical Investigation of Lacing Wire Damage Induced Mistuning in Turbine Blade Packet
Table 12
Natural frequencies (
values) of the tuned blade packet with varying stiffness ratios (lacing wire at mid span).
| | Mode | Submode | = 0.1 | = 0.25 | = 0.5 | = 1.0 |
| | 1 | I | 1.8751 | 1.8751 | 1.8751 | 1.8751 | | II | 1.8803 | 1.8880 | 1.9006 | 1.9249 | | III | 1.8906 | 1.9129 | 1.9479 | 2.0109 |
| | 2 | I | 4.6941 | 4.6941 | 4.6941 | 4.6941 | | II | 4.6956 | 4.6978 | 4.7015 | 4.7019 | | III | 4.6985 | 4.7052 | 4.7162 | 4.7275 |
| | 3 | I | 7.8548 | 7.8548 | 7.8548 | 7.8548 | | II | 7.8548 | 7.8548 | 7.8548 | 7.8548 | | III | 7.8548 | 7.8548 | 7.8548 | 7.8548 |
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