Author(s)

P. Santos, J. Antonio & A. Tadeu

Abstract

This paper presents the three-dimensional scattering field obtained when a cylindrical circular cavity of infinite length, buried in a homogeneous elastic half- space, is subjected to a dilatational point load placed at some point in the medium. The solution is formulated using boundary elements for a wide range of frequencies and spatially harmonic line loads, which are then used to obtain time series by means of (fast) inverse Fourier transforms into space-time. The inclusion and the half-space surface are both modelled with a number of boundary elements that changes according to the excitation frequency of the harmonic source. The number of elements placed at the half-space surface is calculated to fully reproduce the responses at the receivers in the time window conside

Keywords