Rayleigh type bending waves in anisotropic media |
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Authors: | D.D. Zakharov |
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Affiliation: | a Institute for Problems in Mechanics, Russian Academy of Sciences, 101-1 Vernadsky avenue, 117526 Moscow, Russiab Institute of Mechanics and Control, University of Siegen, Paul-Bonatz-Str. 9-11, 57068 Siegen, Germany |
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Abstract: | The existence, dispersion properties, velocities and energy of waves, localized near the stress-free edge of thin anisotropic plates are investigated. As shown, some qualitatively new effects occur: the velocity of Rayleigh type waves can be not minimal between bending waves; wave decay takes place with oscillations; under some type of anisotropy, power flow can equal zero and can change the sign. The well-known Leontovich-Lighthill theorem does not hold any longer, despite the same sign of the phase and group velocities the power flow can have the same or opposite sign. |
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