Effect of Internal Friction and the Lamé Ratio on Stoneley Wave Propagation in Viscoelastic Media of Order 1
Publication: International Journal of Geomechanics
Volume 16, Issue 4
Abstract
The present work aims to study the propagation of Stoneley wave at the common interface of two distinct homogeneous viscoelastic semi-infinite media. The closed-form expression of the velocity equation has been obtained. The real part of the velocity equation corresponds to the phase velocity of Stoneley wave, whereas the imaginary part corresponds to the damped velocity associated with the Stoneley wave. The Lamé ratio associated with Lamé’s first constant for the upper/lower viscoelastic semi-infinite medium and the frictional parameter associated with the shear strain for the upper/lower viscoelastic semi-infinite medium have significant effects on the phase velocity and the damped velocity of Stoneley wave associated with a longitudinal/transversal wave in the upper/lower viscoelastic semi-infinite medium. Numerical computation and graphical illustration were carried out to highlight the important peculiarities of the problem. Moreover, as a special case, it was observed that the velocity equation of propagation of Stoneley wave in the present problem is in good agreement with the velocity equation obtained earlier for the Stoneley wave propagation at the common interface of two distinct homogeneous isotropic semi-infinite media.
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Published In
International Journal of Geomechanics
Volume 16 • Issue 4 • August 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Nov 18, 2014
Accepted: Aug 31, 2015
Published online: Dec 31, 2015
Discussion open until: May 31, 2016
Published in print: Aug 1, 2016
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