Analitične in numerične metode reševanja elastodinamičnih problemov polprostora (Slovene)

By seismic analyse of pretentious constructions a problem of dynamic soil-structure interaction can be very important. Computational the main problem is a soil, which is according to a structure of very great dimensions and it can be treated as a halfspace. For a good soil model a radiation boundary condition (boundary condition at infinity) has to be correctly simulated. This asserts that at infinity all waves are outgoing and no energy is radiated from infinity towards the structure. As we think that according to a convergence and a simplification the described problem can be better solved as a finite system, a fictive finite boundary must be introduced in some distance from the origin of waving. The point is to assure good solutions also in the case that the fictive boundary is located as near as possible to the origin of waving. In this case the computational finite domain is namely small. We would like to assure that the method will be as more as possible general and applicable also for numerical solving of more complicated examples according to geometrical requests and heterogeneous of a soil.