An alternative method to the identification of the modal damping factor based on the dissipated energy
Authors: Montalvão, D. and Silva, J.M.M.
Journal: Mechanical Systems and Signal Processing
Volume: 54
Pages: 108-123
eISSN: 1096-1216
ISSN: 0888-3270
DOI: 10.1016/j.ymssp.2014.08.025
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.
https://eprints.bournemouth.ac.uk/24568/
Source: Scopus
An alternative method to the identification of the modal damping factor based on the dissipated energy
Authors: Montalvao, D. and Silva, J.M.M.
Journal: MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Volume: 54-55
Pages: 108-123
ISSN: 0888-3270
DOI: 10.1016/j.ymssp.2014.08.025
https://eprints.bournemouth.ac.uk/24568/
Source: Web of Science (Lite)
An alternative method to the identification of the modal damping factor based on the dissipated energy
Authors: Montalvão, D. and Silva, J.M.M.
Journal: Mechanical Systems and Signal Processing
Volume: 54-55
Pages: 108-123
ISSN: 0888-3270
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.
https://eprints.bournemouth.ac.uk/24568/
Source: BURO EPrints