APPLICATION OF DIFFERENT MODELLING TECHNIQUES FOR SOIL-STRUCTURE INTERACTION PROBLEMS IN ANISOTROPIC MEDIA

The current paper investigates wave propagation from time-harmonic embedded point source in a semi-infinite anisotropic medium containing underground structure by applying three different computational techniques.Firstly, direct BEM for 2D elastodynamics is applied using the fundamental solution derived by the Radon transform for general anisotropic continua.The second numerical technique is a computationally efficient two-and-a-half dimensional FEM, used to calculate the 3D wave field in the soil.At the boundaries of the mesh perfectly matched layers are instated to prevent spurious wave reflections.The FEM solutions realized by the built-in options in ANSYS are finally utilized with two types of absorbing boundary conditions.The results obtained by the three adopted modelling techniques are properly compared and respective insights regarding their applications are provided.