Localized Bending Waves in a Rib-Reinforced Elastic Orthotropic Plate

[+] Author and Article Information
M. Belubekyan, K. Ghazaryan

 Institute of Mechanics, National Academy of Sciences of Armenia, Yerevan, Armenia

P. Marzocca, C. Cormier

Mechanical and Aeronautical Engineering Department,  Clarkson University, Potsdam, NY 13699-5725

J. Appl. Mech 74(1), 169-171 (Nov 21, 2005) (3 pages) doi:10.1115/1.2165242 History: Received May 05, 2005; Revised November 21, 2005

Localized bending waves in a thin elastic orthotropic cantilever plate reinforced by a rigid rib are studied. A condition under which the edge waves can be eliminated is determined. The condition requires that the rib have a certain minimal stiffness. Such waves are time-varying, and have spatially nonuniform bending perturbations that are localized in the proximity of free surface and are quickly decaying to zero. A general solution is presented and the particular case of an isotropic reinforced plate is shown. An inverse method is described for identifying the elastic properties of the rib.

Copyright © 2007 by American Society of Mechanical Engineers
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Grahic Jump Location
Figure 1

Model of a cantilever plate with one free and rib reinforced edge

Grahic Jump Location
Figure 2

Condition for the existence of localized bending waves in an isotropic rib reinforced plate, b=100mm



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