University of Hertfordshire

Documents

  • Diogo Montalvão
  • J. M. M. Silva
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Original languageEnglish
Pages (from-to)108-123
JournalMechanical Systems and Signal Processing
Volume54-55
Early online date18 Sep 2014
DOIs
Publication statusPublished - 1 Mar 2015

Abstract

The identification of the modal parameters from frequency response functions is a subject that is not new. However, the starting point often comes from the equations that govern the dynamic motion. In this paper, a novel approach is shown, resulting from an analysis that starts on the dissipated energy per cycle of vibration. Numerical and experimental examples were used in order to assess the effectiveness of the proposed method. It was shown that, for lightly damped systems with conveniently spaced modes, it produced quite accurate results when compared to those obtained from the method of the inverse. The technique also proved to be simple enough to be used for quick estimates of the modal damping factors. Finally, this paper is a contribution to modal analysis and identification methods, as the developed technique has never been proposed before.

Notes

This document is the Accepted Manuscript version, made available under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way. The final, definitive version of this article is available online at doi: https://doi.org/10.1016/j.ymssp.2014.08.025.

ID: 7410933