Research Article
Influence of Excitation on Dynamic System Identification for a Multi-Span Reinforced Concrete Bridge
Table 4
Reliability of 1st mode shape from harmonic loading with superimposed noise.
| | Source of noise | Reference mode shape | MAC value at varying noise levels | | No noise | 1% noise | 5% noise | 10% noise |
| | Input (force) | Eigenvalue | 0.99498 | 0.99497 | 0.99522 | 0.99523 | | Time domain (no noise) | 1.00000 | 1.00000 | 1.00000 | 1.00000 | | Output (response) | Eigenvalue | 0.99498 | 0.99540 | 0.99550 | 0.99490 | | Time domain (no noise) | 1.00000 | 1.00000 | 1.00000 | 1.00000 |
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