Velocity field and force distribution in an unconsolidated ice ridge penetrated by a ship
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A4 Artikkeli konferenssijulkaisussa
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Date
2023
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Language
en
Pages
8
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Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions
Abstract
Estimating ship resistance in ice ridges requires an understanding of ridge failure processes. A three-dimensional discrete element method is used to study a ship passing through a small unconsolidated ridge with a triangular cross-section and the resulting velocity field and force distribution inside the ridge. The kinetic behavior of ice blocks within the ridge suggests a gradual failure process, not a sudden failure. The velocity field shows fast-moving ice blocks near the ship bow, and stationary or slow-moving blocks further away. Loads within the ridge were transmitted through force chains. No unique shear planes were observed.Description
Funding Information: The first author gratefully acknowledges financial support from K. Albin Johanssons stiftelse s.The paper’s content is part of the firsr author's doctoral thesis at Aalto University. Publisher Copyright: © 2023 Lulea University of Technology. All rights reserved.
Keywords
Failure behavior, Force chain, Resistance, Ridge
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Citation
Gong, H, Polojärvi, A & Tuhkuri, J 2023, Velocity field and force distribution in an unconsolidated ice ridge penetrated by a ship . in Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions (POAC) . vol. 2023-June, Proceedings of the International Conference on Port and Ocean Engineering under Arctic Conditions, International Conference on Port and Ocean Engineering under Arctic Conditions (POAC), International Conference on Port and Ocean Engineering under Arctic Conditions, Glasgow, United Kingdom, 12/06/2023 .