A Contribution to the Modal Identification of the Damping Factor based on the Dissipated Energy

Diogo Montalvão; J. M. M. Silva

A Contribution to the Modal Identification of the Damping Factor based on the Dissipated Energy

Diogo Montalvão, J. M. M. Silva

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

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Abstract

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. For lightly damped systems with conveniently spaced modes, it produced quite accurate results in comparison to the direct application of the method of the inverse, both in the numerical and in the experimental examples. It also is a simple technique that can be used to produce quick estimates of the modal damping factors. Furthermore, this is also a contribution to further developments on modal analysis and identification methods as, up to today, the developed technique has not yet been proposed.

Original language	English
Title of host publication	EURODYN 2014
Subtitle of host publication	IX Int Conf on Structural Dynamics
Editors	A. Cunha, E. Caetano, P. Ribeiro, G. Muller
Publisher	European Association for Structural Dynamics (EASD)
Pages	2571-2577
Number of pages	7
ISBN (Print)	978-972-752-165-4
Publication status	Published - Jul 2014
Event	EURODYN 2014 - 9th International Conference on Structural Dynamics - Faculdade de Engenharia da Universidade do Porto, Porto, Portugal Duration: 30 Jun 2014 → 2 Jul 2014

Conference

Conference	EURODYN 2014 - 9th International Conference on Structural Dynamics
Country/Territory	Portugal
City	Porto
Period	30/06/14 → 2/07/14

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2014_MontalvaoSilva_FINAL_PAPER_356_MS13_ABS_1364Final published version, 721 KB

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Cite this

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title = "A Contribution to the Modal Identification of the Damping Factor based on the Dissipated Energy",

abstract = "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. For lightly damped systems with conveniently spaced modes, it produced quite accurate results in comparison to the direct application of the method of the inverse, both in the numerical and in the experimental examples. It also is a simple technique that can be used to produce quick estimates of the modal damping factors. Furthermore, this is also a contribution to further developments on modal analysis and identification methods as, up to today, the developed technique has not yet been proposed.",

author = "Diogo Montalv{\~a}o and Silva, {J. M. M.}",

year = "2014",

month = jul,

language = "English",

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publisher = "European Association for Structural Dynamics (EASD)",

note = "EURODYN 2014 - 9th International Conference on Structural Dynamics ; Conference date: 30-06-2014 Through 02-07-2014",

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Montalvão, D & Silva, JMM 2014, A Contribution to the Modal Identification of the Damping Factor based on the Dissipated Energy. in A Cunha, E Caetano, P Ribeiro & G Muller (eds), EURODYN 2014: IX Int Conf on Structural Dynamics. European Association for Structural Dynamics (EASD), pp. 2571-2577, EURODYN 2014 - 9th International Conference on Structural Dynamics, Porto, Portugal, 30/06/14. <http://www.fe.up.pt/eurodyn2014>

A Contribution to the Modal Identification of the Damping Factor based on the Dissipated Energy. / Montalvão, Diogo; Silva, J. M. M.
EURODYN 2014: IX Int Conf on Structural Dynamics. ed. / A. Cunha; E. Caetano; P. Ribeiro; G. Muller. European Association for Structural Dynamics (EASD), 2014. p. 2571-2577.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - A Contribution to the Modal Identification of the Damping Factor based on the Dissipated Energy

AU - Montalvão, Diogo

AU - Silva, J. M. M.

PY - 2014/7

Y1 - 2014/7

N2 - 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. For lightly damped systems with conveniently spaced modes, it produced quite accurate results in comparison to the direct application of the method of the inverse, both in the numerical and in the experimental examples. It also is a simple technique that can be used to produce quick estimates of the modal damping factors. Furthermore, this is also a contribution to further developments on modal analysis and identification methods as, up to today, the developed technique has not yet been proposed.

AB - 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. For lightly damped systems with conveniently spaced modes, it produced quite accurate results in comparison to the direct application of the method of the inverse, both in the numerical and in the experimental examples. It also is a simple technique that can be used to produce quick estimates of the modal damping factors. Furthermore, this is also a contribution to further developments on modal analysis and identification methods as, up to today, the developed technique has not yet been proposed.

M3 - Conference contribution

SN - 978-972-752-165-4

SP - 2571

EP - 2577

BT - EURODYN 2014

A2 - Cunha, A.

A2 - Caetano, E.

A2 - Ribeiro, P.

A2 - Muller, G.

PB - European Association for Structural Dynamics (EASD)

T2 - EURODYN 2014 - 9th International Conference on Structural Dynamics

Y2 - 30 June 2014 through 2 July 2014

ER -

A Contribution to the Modal Identification of the Damping Factor based on the Dissipated Energy

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