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| Independent1 (Theoretical) | Independent2 (MSC/NASTRAN) | Independent3 (NISA II) | MIDAS | OpenBrIM | Percent Difference (MIDAS vs Independent1) | Percent Difference (MIDAS vs Independent2) | Percent Difference (MIDAS vs Independent3) | Percent Difference (OpenBrIM vs Independent1) | Percent Difference (OpenBrIM vs Independent2) | Percent Difference (OpenBrIM vs Independent3) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mode1 | Frequency (rad/sec) | 10.8267 | 10.8267 | 10.8267 | 10.8267 | 10.8267 | 0% | 0% | 0% | 0% | 0% | 0% | |||
| Frequency (cycle/sec) | 1.7231 | 1.7231 | 1.7231 | 1.7231 | 1.7231 | 0% | 0% | 0% | 0% | 0% | 0% | ||||
| Period (sec) | Angular velocity, w1 (rad/sec) | X1 | X2 | 0.5803 | 0.5803 | 0.5803 | 0.5803 | 0.5803 | 0% | 0% | 0% | 0% | 0% | 0% | |
| X1 | 1.0000 | 1.0000 | 1.0000 | 1.0000 | |||||||||||
| X2 | 0.531 | 0.531 | 0.531 | 0.531 | |||||||||||
| Mode2 | Frequency (rad/sec) | 46.1821 | 46.1821 | 46.1821 | 46.1821 | 46.1821 | 0% | 0% | 0% | 0% | 0% | 0% | |||
| Frequency (cycle/sec) | 7.3501 | 7.3501 | 7.3501 | 7.3501 | 7.3501 | 0% | 0% | 0% | 0% | 0% | 0% | ||||
| Period (sec) | Angular velocity, w1 (rad/sec) | X1 | X2 | 0.1361 | 0.1361 | 0.1361 | 0.1361 | 0.1361 | 0% | 0% | 0% | 0% | 0% | 0% | |
| X1 | -0.133 | -0.133 | -0.133 | -0.133 | |||||||||||
| X2 | 1.0000 | 1.0000 | 1.0000 | 1.0000 |