ABSTRACT
In the problem of dynamic soil-structure interaction, it is essential to appropriately model the boundary of soil domain for elimination of the influence of the reflected waves from the boundary. In this paper, some of the existing prominent models have been critically reviewed and an attempt has been made to model the soil domain using only the finite elements by placing the truncated (artificial) boundary in the soil mass at appropriate distances from the structure. An example of a rigid vibrating disc resting on the semi-infinite soil surface has been considered. The minimum essential distance of the boundary from the structure has been found out for various values of damping so as to cause negligible change in the response of the structure. The proposed technique has also been tested for nonlinear transient dynamic behaviour.
