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Full Dynamic Compound Inverse Method: Extension to General and Rayleigh damping

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Abstract

The present paper takes from the original output-only identification approach named Full Dynamic Compound Inverse Method (FDCIM), recently published on this journal by the authors, and proposes an innovative, much enhanced version, in the description of more general forms of structural damping, including for classically adopted Rayleigh damping. This has led to an extended FDCIM formulation, which offers superior performance, on all the targeted identification parameters, namely: modal properties, Rayleigh damping coefficients, structural features at the element-level and input seismic excitation time history. Synthetic earthquake-induced structural response signals are adopted as input channels for the FDCIM approach, towards comparison and validation. The identification algorithm is run first on a benchmark 3-storey shear-type frame, and then on a realistic 10-storey frame, also by considering noise added to the response signals. Consistency of the identification results is demonstrated, with definite superiority of this latter FDCIM proposal.

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Acknowledgements

This study was funded by public research support from “Fondi di Ricerca d’Ateneo ex 60%” and a ministerial doctoral grant and funds at the ISA Doctoral School, University of Bergamo, Department of Engineering and Applied Sciences (Dalmine).

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  1. Dipartimento di Ingegneria e Scienze Applicate, Università di Bergamo, viale G. Marconi 5, 24044, Dalmine, BG, Italy

    Fabio Pioldi & Egidio Rizzi

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  1. Fabio Pioldi
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  2. Egidio Rizzi
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Correspondence to Egidio Rizzi.

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Pioldi, F., Rizzi, E. Full Dynamic Compound Inverse Method: Extension to General and Rayleigh damping. Comput Mech 59, 539–553 (2017). https://doi.org/10.1007/s00466-016-1347-2

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  • DOI: https://doi.org/10.1007/s00466-016-1347-2

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