Research Article
Finite Element Model Updating of Bridge Structures Based on Improved Response Surface Methods
Table 9
Comparison of natural frequencies before/after was model updated.
| | Natural frequency | Measured frequency (Hz) | Before updating | Traditional response surface method | Improved response surface method | | Frequencies (Hz) | Error (%) | Updated (Hz) | Error (%) | Updated (Hz) | Error (%) |
| | First | 1.741 | 2.119 | 21.68 | 1.888 | 8.44 | 1.758 | 0.94 | | Second | 2.559 | 2.787 | 8.88 | 2.542 | 0.66 | 2.559 | 0.02 | | Third | 3.371 | 3.763 | 11.64 | 3.635 | 7.83 | 3.229 | 4.23 |
|
|
