Research Article
Free-Decay Nonlinear System Identification via Mass-Change Scheme
Table 6
Identified modal masses of the multistory building.
| Mode | Identified modal mass (kg), output-only NSI | Identified modal mass (kg), SSI | Difference (%) |
| 1 | 5.47 | 5.69 | 4.05 | 2 | 6.82 | 6.26 | 8.20 | 3 | 3.94 | 3.83 | 2.67 | 4 | 1.34 | 1.37 | 2.44 | 5 | 0.79 | 0.47 | 39.48 |
|
|