Dynamics of the elastic ice sheet

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...

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Bibliographic Details
Main Author: Kajaste-Rudnitski, Juri
Format: Book
Language:English
Published: VTT Technical Research Centre of Finland 1990
Subjects:
Online Access:https://cris.vtt.fi/en/publications/4b0a2808-bba1-4304-961d-9cbb6eb31021
Description
Summary: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.