| Mode | Damped flexible cross-tie |
Rigid cross-tie | ( kN/m, kN·s/m) |
(, ) | (Hz) | (%) | Mode shape | (Hz) | (%) | Mode shape | Ana. | FEA | Ana. | FEA |
| 1 | 1.55 | 1.55 | 1.71 | 1.72 | GM, in-phase | 1.68 | 0.61 | GM, in-phase | 2 | 2.15 | 2.15 | 4.01 | 4.01 | GM, out-of-phase | 2.91 | 0.25 | LM, cable 1 | 3 | 2.91 | 2.91 | 0.25 | 0.25 | LM, cable 1 | 3.37 | 0.34 | GM, out-of-phase | 4 | 3.98 | 3.98 | 0.40 | 0.40 | LM, cable 2 | 3.98 | 0.40 | LM, cable 2 | 5 | 4.42 | 4.41 | 1.11 | 1.12 | LM, cable 1 | 5.04 | 0.21 | GM, in-phase | 6 | 5.83 | 5.82 | 0.12 | 0.12 | LM, cable 1 | 5.83 | 0.13 | LM, cable 1 | 7 | 6.03 | 6.02 | 1.29 | 1.29 | LM, cable 2 | 6.74 | 0.17 | GM, out-of-phase | 8 | 7.31 | 7.30 | 0.72 | 0.72 | LM, cable 1 | 7.97 | 0.20 | LM, cable 2 | 9 | 7.97 | 7.96 | 0.20 | 0.20 | LM, cable 2 | 8.41 | 0.13 | GM, in-phase | 10 | 8.74 | 8.72 | 0.08 | 0.08 | LM, cable 1 | 8.74 | 0.08 | LM, cable 1 |
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