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Shock and Vibration
Volume 5 (1998), Issue 5-6, Pages 337-341

Coupling of Flexural and Longitudinal Damped Vibration in a Two-Layered Beam

F. Pourroy,1 S. Shakhesi,1 and P. Trompette2

1Laboratoire des Sols, Solides et Structures, BP53, 38041 Grenoble Cedex 9, France
2Institut des Sciences et Techniques de l’Ingénieur de Lyon, 69000 Lyon, France

Received 18 November 1996; Revised 6 November 1998

Copyright © 1998 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In dynamics, the effect of varying the constitutive materials’ thickness of a two-layered beam is investigated. Resonance frequencies and damping variations are determined. It is shown that for specific thicknesses the coupling of longitudinal and flexural vibrations influences the global modal damping ratio significantly.