Identification simultanée des paramètres de rigidité et d'amortissement de plaques isotropes minces en vibration par la méthode des champs virtuels

Abstract : The study presents the theory and the experimental application of a method leading to the simultaneous identification of the elastic and damping material properties of isotropic vibrating plates. The theory assumes that the searched parameters can be extracted from curvature and deflection fields measured on the whole surface of the plate at two particular instants of the vibrating motion. The experimental application consists in an original excitation fixture, a particular adaptation of an optical full-field measurement technique, a data preprocessing giving the curvature and deflection fields and finally in the identification process using the Virtual Fields Method. These latter act as filters leading to the extraction of the searched parameters. A particular attention is paid to the selection procedure of virtual fields which must comply with the experimental boundary conditions of the plate and can minimize the effects of the measurement noise on the identification results.
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https://pastel.archives-ouvertes.fr/pastel-00002749
Contributor : Ecole Arts Et Métiers Paristech <>
Submitted on : Monday, September 24, 2007 - 8:00:00 AM
Last modification on : Wednesday, November 29, 2017 - 9:42:42 AM
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Baoqiao Guo. Identification simultanée des paramètres de rigidité et d'amortissement de plaques isotropes minces en vibration par la méthode des champs virtuels. Sciences de l'ingénieur [physics]. Arts et Métiers ParisTech, 2007. Français. ⟨NNT : 2007ENAM0010⟩. ⟨pastel-00002749⟩

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