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Damping ratios identification by sensitivity-based model updating: Experimental investigation

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Authors
Li, Jun
Hao, H.
Fan, G.
Date
2017
Type
Conference Paper

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Li, J. and Hao, H. and Fan, G. 2017. Damping ratios identification by sensitivity-based model updating: Experimental investigation, Hao, H. and Zhang, C. (eds), Proceedings of the 24th Australasian Conference on the Mechanics of Structures and Materials (ACMSM24), Dec 6-9 2016, pp. 1349-1354. Perth: ACMSM.
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Mechanics of Structures and Materials: Advancements and Challenges - Proceedings of the 24th Australasian Conference on the Mechanics of Structures and Materials, ACMSM24 2016
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School of Civil and Mechanical Engineering (CME)
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Abstract

Identification of damping characteristics is of significant importance for dynamic response analysis and condition assessment of structural systems. Damping is associated with the behavior of the energy dissipation mechanism. Identification of damping ratios based on the sensitivity of dynamic responses and the model updating technique is investigated with experimental investigations. The effectiveness and performance of the sensitivity-based model updating method for damping ratios identification are investigated. Experimental studies on a steel planar frame structure are conducted. The robustness and performance of the proposed damping identification approach considering noise effect and modelling errors are investigated. The results demonstrate that the proposed approach has a decent and reliable performance to identify the damping ratios based on time domain analysis.