Wave propagation due to a moving load

The wave propagation on the surface of a half-space due to a moving load is analyzed using the Integral Transform Method. By using of the Helmholtz’s decomposition and threefold Fourier transformation the body wave equation is transformed in the wave number-frequency domain and solved numerically. The obtained displacement field is transformed in time domain by the Inverse Fourier Transform. The analysis is carried out using computer program written in MATLAB program language. The load is vertical sinusoidal force P=1 MN moving along the line defined by x=0 with constant speed. The influence of source velocity on the displacements of the half-space and on the frequency content of the displacements at three locations at different distances from the load line is presented