AXISYMMETRICAL ELASTODYNAMIC INFINITE ELEMENTS FOR MULTILAYERED HALF-SPACE

This paper presents three axisymmetric infinite elements for the elast odynamic problems in a multi-layered half-space. They are the horizont al, the vertical and the corner infinite elements that are developed b y using the wave functions in the function spaces derived from approxi mate expressions of the analytical solutions. An efficient integration procedure is proposed for calculating the element matrices involving multiple wave components. Numerical example analyses are presented for rigid disks on homogeneous and layered half-spaces, and for an embedd ed caisson. The numerical results obtained show the effectiveness of t he proposed infinite elements.