Torsional Surface Waves in Nonhomogeneous Anisotropic Medium under Initial Stress
Publication: Journal of Engineering Mechanics
Volume 126, Issue 11
Abstract
This paper studies the possibilities of propagation of torsional surface waves in nonhomogeneous anisotropic half-space under compressive initial stress. Two types of variations in nonhomogeneity, mainly hyperbolic and quadratic, have been discussed, and it is observed that in both cases the torsional surface wave will propagate in the media under consideration. The velocities of propagation have been computed and are presented in graphs. The study shows that for hyperbolic variation of nonhomogeneity, the increase of the anisotropic factor, increases the velocity of propagation, always keeping it more than that of shear wave in homogeneous medium. The presence of initial stress increases the velocity of propagation. In the case of quadratic variation it is found that the presence of initial stresses increases the velocity of propagation. The increase of anisotropy decreases the velocity, and the decrease in the nonhomogeneity factor increases the velocity, always keeping the velocity of torsional surface waves less than that of shear wave in the homogeneous medium.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 126 • Issue 11 • November 2000
Pages: 1120 - 1123
History
Received: Jul 26, 1999
Published online: Nov 1, 2000
Published in print: Nov 2000
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