On the surface motion characteristics in a single layered half-space excited by bulk waves

On the surface motion characteristics in a single layered half-space excited by bulk waves In this paper, a study of bulk wave propagation in a layered half-space and the corresponding surface motion characteristics is reported. Two different types of layer material, namely elastic and viscoelastic, are considered. In both cases, the half-space is modeled as an elastic medium. The displacement functions are obtained for the free surface material point motion. In general, the free surface material point motion in a layered half-space is elliptical with certain aspect ratio and orientation. The aspect ratio and orientation depend upon the incident wave and medium properties. The effects of various parameters of the viscoelastic media on the material point motion are studied. The dependence of phase velocity and quality factor on frequency is derived using the creep function of the viscoelastic medium. The effects of various controllable parameters on the characteristics of surface displacement and material point motion are presented and discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Mechanica Springer Journals

On the surface motion characteristics in a single layered half-space excited by bulk waves

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Publisher
Springer Vienna
Copyright
Copyright © 2017 by Springer-Verlag Wien
Subject
Engineering; Theoretical and Applied Mechanics; Classical and Continuum Physics; Continuum Mechanics and Mechanics of Materials; Structural Mechanics; Vibration, Dynamical Systems, Control; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0001-5970
eISSN
1619-6937
D.O.I.
10.1007/s00707-017-1868-6
Publisher site
See Article on Publisher Site

Abstract

In this paper, a study of bulk wave propagation in a layered half-space and the corresponding surface motion characteristics is reported. Two different types of layer material, namely elastic and viscoelastic, are considered. In both cases, the half-space is modeled as an elastic medium. The displacement functions are obtained for the free surface material point motion. In general, the free surface material point motion in a layered half-space is elliptical with certain aspect ratio and orientation. The aspect ratio and orientation depend upon the incident wave and medium properties. The effects of various parameters of the viscoelastic media on the material point motion are studied. The dependence of phase velocity and quality factor on frequency is derived using the creep function of the viscoelastic medium. The effects of various controllable parameters on the characteristics of surface displacement and material point motion are presented and discussed.

Journal

Acta MechanicaSpringer Journals

Published: Jun 17, 2017

References

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