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DIRECT IDENTIFICATION OF ELASTIC CONSTANTS OF ANISOTROPIC PLATES BY MODAL ANALYSIS: EXPERIMENTAL RESULTS

The determination of the six elastic stiffnesses of thin anisotropic plates from vibration tests is usually performed with numerical procedures based on the finite element or the Rayleigh–Ritz method, which both require assumptions concerning the studied mode shapes. The present paper describes a me...

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Bibliographic Details
Published in:Journal of sound and vibration 1998-03, Vol.210 (5), p.643-659
Main Authors: Grédiac, M., Fournier, N., Paris, P.-A., Surrel, Y.
Format: Article
Language:English
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Summary:The determination of the six elastic stiffnesses of thin anisotropic plates from vibration tests is usually performed with numerical procedures based on the finite element or the Rayleigh–Ritz method, which both require assumptions concerning the studied mode shapes. The present paper describes a method based on the measurement and the processing of natural frequencies as well as mode shapes of the vibrating tested plate. As a result, the unknown stiffnesses are determined directly, without any iterative calculations. The experimental aspects of the method are presently described and several results illustrate the relevance of the approach.
ISSN:0022-460X
1095-8568
DOI:10.1006/jsvi.1997.1304