An approximate analysis of thickness-stretch waves in an elastic plate |
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Authors: | J. S. Yang Shankar Krishnaswamy |
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Affiliation: | Department of Engineering Mechanics, University of Nebraska, Lincoln, NE 68588, USA |
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Abstract: | Two-dimensional equations for coupled extensional and thickness-stretch waves in an elastic plate are simplified by eliminating the extensional displacements in a systematic manner; the result is a single equation governing thickness-stretch motions. A similar reduction is also performed for coupled extensional, thickness-stretch, and symmetric thickness-shear waves. The procedure is similar to that used in the thickness-shear approximation, wherein the flexural displacement is eliminated from the equations for coupled flexural and thickness-shear motions. The resulting equations are used to discuss the energy-trapped vibration of plates in thickness-stretch modes. |
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