Dynamic displacement and stress solutions for viscoelastic half-spaces subjected to harmonic concentrated loads using the Radon and Fourier transforms

Abstract

In this article a numerical solution for a three-dimensional isotropic, viscoelastic half-space subjected to concentrated surface stress loadings is synthesized with the aid of the Radon and Fourier integral transforms. Dynamic displacement and stress fields are computed for points at the surface and inside the domain. The analysis is performed in the frequency domain. Viscoelastic effects are incorporated by means of the elastic-viscoelastic correspondence principle. The equations of motion are solved in the Radon-Fourier transformed domain. Inverse transformations to the physical domain are accomplished numerically. The scheme used to perform the numerical inverse transformations is addressed. The solution is validated by comparison with results available in the literature. A set of original dynamic displacement and stress solutions for points within the half-space is presented. Copyright (C) 2009 John Wiley & Sons, Ltd.