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.
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Mots-clés : Vibrations, Identification, Méthode des champs virtuels, Amortissement, Vibrations forcées, Plaques
Alain Giraudeau 1; Fabrice Pierron 1
@article{CRMECA_2003__331_4_259_0, author = {Alain Giraudeau and Fabrice Pierron}, title = {Simultaneous identification of stiffness and damping properties of isotropic materials from forced vibrating plates}, journal = {Comptes Rendus. M\'ecanique}, pages = {259--264}, publisher = {Elsevier}, volume = {331}, number = {4}, year = {2003}, doi = {10.1016/S1631-0721(03)00061-5}, language = {en}, }
TY - JOUR AU - Alain Giraudeau AU - Fabrice Pierron TI - Simultaneous identification of stiffness and damping properties of isotropic materials from forced vibrating plates JO - Comptes Rendus. Mécanique PY - 2003 SP - 259 EP - 264 VL - 331 IS - 4 PB - Elsevier DO - 10.1016/S1631-0721(03)00061-5 LA - en ID - CRMECA_2003__331_4_259_0 ER -
%0 Journal Article %A Alain Giraudeau %A Fabrice Pierron %T Simultaneous identification of stiffness and damping properties of isotropic materials from forced vibrating plates %J Comptes Rendus. Mécanique %D 2003 %P 259-264 %V 331 %N 4 %I Elsevier %R 10.1016/S1631-0721(03)00061-5 %G en %F CRMECA_2003__331_4_259_0
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] 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] 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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