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Modal identification of output-only systems using frequency domain decomposition
Abstract
In this paper a new frequency domain technique is introduced for the modal identification of output-only systems, i.e. in the case where the modal parameters must be estimated without knowing the input exciting the system. By its user friendliness the technique is closely related to the classical approach where the modal parameters are estimated by simple peak picking. However, by introducing a decomposition of the spectral density function matrix, the response spectra can be separated into a set of single degree of freedom systems, each corresponding to an individual mode. By using this decomposition technique close modes can be identified with high accuracy even in the case of strong noise contamination of the signals. Also, the technique clearly indicates harmonic components in the response signals.
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Citations
Cited by
Malekloo, A., Ozer, E., AlHamaydeh, M., & Girolami, M. (2022) · Structural Health Monitoring · doi:10.1177/14759217211036880 · Cited by 607
Malekjafarian, A., & OBrien, E. J. (2014) · Engineering Structures · doi:10.1016/j.engstruct.2014.10.007 · Cited by 275
System identification of suspension bridge from ambient vibration response
Siringoringo, D. M., & Fujino, Y. (2008) · Engineering Structures · doi:10.1016/j.engstruct.2007.03.004 · Cited by 263
Lynch, J. P., Wang, Y., Loh, K. J., Yi, J.-H., & Yun, C.-B. (2006) · Smart Materials and Structures · doi:10.1088/0964-1726/15/6/008 · Cited by 257
Modal identification of bridges under varying environmental conditions: Temperature and wind effects
Li, H., Li, S., Ou, J., & Li, H. (2009) · Structural Control and Health Monitoring · doi:10.1002/stc.319 · Cited by 168
Metadata
- Authors
- Brincker, R., Zhang, L., & Andersen, P.
- Venue
- Smart Materials and Structures
- Publisher
- IOP Publishing
- Published
- 2001-06-01
- Volume
- 10
- Issue
- 3
- Pages
- 441-445
- ISSN
- 0964-1726 (ISSN-L)
- 1361-665X
- OpenAlex
- W2055738215
- Cited by
- 1,825
- References
- 0
- FWCI
- 20.58
- Type
- journal article
- Language
- en
- Open access
- closed
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- Brincker, R., Zhang, L., & Andersen, P. (2001). Modal identification of output-only systems using frequency domain decomposition. Smart Materials and Structures. https://doi.org/10.1088/0964-1726/10/3/303
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