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

✍ Scribed by M. Grédiac; N. Fournier; P.-A. Paris; Y. Surrel

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 393 KB
• Volume: 210
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1997.1304

✦ Synopsis

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.