1990

Kajaste-Rudnitski, Juri

In the process of ice-structure interaction, elastic waves propagate outward from the contact points into the depth of a moving infinite ice sheet carrying away with them a certain amount of energy.Although the equations of motion do not contain dissipative terms the damping effect occurs due to the border geometry.If not taken into account this geometrical damping can cause substantial errors in the load evaluation.Actually to demonstrate a phenomenon in the time domain, the method of potentials is used to solve a dynamic problem of the elastic half-plane subjected to the arbitrary force acting on its boundary edge.The dynamic properties of the elastic ice sheet are also studied in the frequency domain.This research, as part of a joint project, was carried out in cooperation with the Norwegian Geotechnical Institute, Oslo, Norway.