Comptes Rendus
Simultaneous identification of stiffness and damping properties of isotropic materials from forced vibrating plates
Comptes Rendus. Mécanique, Volume 331 (2003) no. 4, pp. 259-264.

This paper presents a novel methodology for the identification of damping of isotropic plates. It relies on forced inertial excitation of a clamped plate and full-field curvature measurements using a suitable optical technique. Using the Virtual Fields Method, it is shown that the damping parameter is easily related to the curvature field, even on a non-resonant plate. This paper opens a totally new field of investigation for damping identification.

Ce papier présente une méthodologie originale d'identification de l'amortissement matériau d'une plaque mince. L'excitation choisie est inertielle et on suppose que le champs de courbure est mesuré en surface de la plaque. En utilisant la méthode des champs virtuels, on montre que le paramètre d'amortissement s'exprime assez simplement en fonction du champ de courbure, ceci même lorsqu'on est hors-résonance. Ce papier ouvre une voie nouvelle pour la caractérisation de l'amortissement des matériaux en régime vibratoire.

Received:
Accepted:
Published online:
DOI: 10.1016/S1631-0721(03)00061-5
Keywords: Vibrations, Identification, Virtual Fields Method, Damping, Forced vibrations, Plates
Mot clés : Vibrations, Identification, Méthode des champs virtuels, Amortissement, Vibrations forcées, Plaques

Alain Giraudeau 1; Fabrice Pierron 1

1 Laboratoire de mécanique et procédés de fabrication, École nationale supérieure d'arts et métiers, rue Saint-Dominique, BP 508, 51006 Châlons-en-Champagne cedex, France
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     title = {Simultaneous identification of stiffness and damping properties of isotropic materials from forced vibrating plates},
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Alain Giraudeau; Fabrice Pierron. Simultaneous identification of stiffness and damping properties of isotropic materials from forced vibrating plates. Comptes Rendus. Mécanique, Volume 331 (2003) no. 4, pp. 259-264. doi : 10.1016/S1631-0721(03)00061-5. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/S1631-0721(03)00061-5/

[1] M. Grédiac Principe des travaux virtuels et identification/principle of virtual work and identification, C. R. Acad. Sci. Paris, Sér. II, Volume 309 (1989), pp. 1-5

[2] M. Grédiac; N. Fournier; P.-A. Paris; Y. Surrel Direct determination of elastic constants of anisotropic plates by modal analysis: experimental results, J. Sound Vib., Volume 210 (1998) no. 5, pp. 643-659

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