Limit mechanisms for ice loads on inclined structures: Local crushing
This paper focuses on mechanisms that limit the sea ice loads on offshore structures. It introduces a probabilistic limit load model, which can be used to analyze peak ice load events and to estimate the maximum peak ice load values on a wide, inclined, offshore structure. The model is based on simp...
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Online Access: | https://aaltodoc.aalto.fi/handle/123456789/38825 https://doi.org/10.1016/j.marstruc.2019.102633 |
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ftaaltouniv:oai:aaltodoc.aalto.fi:123456789/38825 2023-05-15T15:08:09+02:00 Limit mechanisms for ice loads on inclined structures: Local crushing Ranta, Janne Polojärvi, Arttu Marine Technology Solid Mechanics Department of Mechanical Engineering Aalto-yliopisto Aalto University 2019-05-31 application/pdf https://aaltodoc.aalto.fi/handle/123456789/38825 https://doi.org/10.1016/j.marstruc.2019.102633 en eng Elsevier Ltd. Marine Structures Volume 67 Ranta , J & Polojärvi , A 2019 , ' Limit mechanisms for ice loads on inclined structures: Local crushing ' , Marine Structures , vol. 67 , 102633 . https://doi.org/10.1016/j.marstruc.2019.102633 0951-8339 PURE UUID: 61593cd5-25ee-4a3a-99bc-11159abf17e1 PURE ITEMURL: https://research.aalto.fi/en/publications/61593cd5-25ee-4a3a-99bc-11159abf17e1 PURE LINK: http://www.scopus.com/inward/record.url?scp=85066309161&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/34481788/ENG_Ranta_et_Poloj_rvi_Limit_Mechanisms_for_Ice_Marine_Structures.pdf https://aaltodoc.aalto.fi/handle/123456789/38825 URN:NBN:fi:aalto-201906203891 doi:10.1016/j.marstruc.2019.102633 openAccess Arctic engineering Discrete element method Finite-discrete element method ice loads Ice mechanics Ice-structure interaction Offshore structures A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä 2019 ftaaltouniv https://doi.org/10.1016/j.marstruc.2019.102633 2022-12-15T19:18:57Z This paper focuses on mechanisms that limit the sea ice loads on offshore structures. It introduces a probabilistic limit load model, which can be used to analyze peak ice load events and to estimate the maximum peak ice load values on a wide, inclined, offshore structure. The model is based on simple mechanical principles, and it accounts for a mixed-mode ice failure process that includes buckling and local crushing of ice. The model development is based on observations on two-dimensional combined finite-discrete element method simulations on the ice-structure interaction process. The paper also presents a numerical limit load algorithm, which is an extension of the probabilistic limit load model and capable of yielding a large number of stochastic peak ice load values. The algorithm is compared to simulation-based and full-scale observations. Analyzing peak ice load events is challenging as sea ice goes through a complex mixed-mode failure process during such events. The algorithm is an effective tool for this analysis, and it shows that distinguishing between the buckling and local crushing failure is virtually impossible if the only data available from a peak load event is the value of the peak ice load. The algorithm shows potential in improving estimates of maximum peak ice load values on offshore structures. Peer reviewed Article in Journal/Newspaper Arctic Sea ice Aalto University Publication Archive (Aaltodoc) Arctic Marine Structures 67 102633 |
institution |
Open Polar |
collection |
Aalto University Publication Archive (Aaltodoc) |
op_collection_id |
ftaaltouniv |
language |
English |
topic |
Arctic engineering Discrete element method Finite-discrete element method ice loads Ice mechanics Ice-structure interaction Offshore structures |
spellingShingle |
Arctic engineering Discrete element method Finite-discrete element method ice loads Ice mechanics Ice-structure interaction Offshore structures Ranta, Janne Polojärvi, Arttu Limit mechanisms for ice loads on inclined structures: Local crushing |
topic_facet |
Arctic engineering Discrete element method Finite-discrete element method ice loads Ice mechanics Ice-structure interaction Offshore structures |
description |
This paper focuses on mechanisms that limit the sea ice loads on offshore structures. It introduces a probabilistic limit load model, which can be used to analyze peak ice load events and to estimate the maximum peak ice load values on a wide, inclined, offshore structure. The model is based on simple mechanical principles, and it accounts for a mixed-mode ice failure process that includes buckling and local crushing of ice. The model development is based on observations on two-dimensional combined finite-discrete element method simulations on the ice-structure interaction process. The paper also presents a numerical limit load algorithm, which is an extension of the probabilistic limit load model and capable of yielding a large number of stochastic peak ice load values. The algorithm is compared to simulation-based and full-scale observations. Analyzing peak ice load events is challenging as sea ice goes through a complex mixed-mode failure process during such events. The algorithm is an effective tool for this analysis, and it shows that distinguishing between the buckling and local crushing failure is virtually impossible if the only data available from a peak load event is the value of the peak ice load. The algorithm shows potential in improving estimates of maximum peak ice load values on offshore structures. Peer reviewed |
author2 |
Marine Technology Solid Mechanics Department of Mechanical Engineering Aalto-yliopisto Aalto University |
format |
Article in Journal/Newspaper |
author |
Ranta, Janne Polojärvi, Arttu |
author_facet |
Ranta, Janne Polojärvi, Arttu |
author_sort |
Ranta, Janne |
title |
Limit mechanisms for ice loads on inclined structures: Local crushing |
title_short |
Limit mechanisms for ice loads on inclined structures: Local crushing |
title_full |
Limit mechanisms for ice loads on inclined structures: Local crushing |
title_fullStr |
Limit mechanisms for ice loads on inclined structures: Local crushing |
title_full_unstemmed |
Limit mechanisms for ice loads on inclined structures: Local crushing |
title_sort |
limit mechanisms for ice loads on inclined structures: local crushing |
publisher |
Elsevier Ltd. |
publishDate |
2019 |
url |
https://aaltodoc.aalto.fi/handle/123456789/38825 https://doi.org/10.1016/j.marstruc.2019.102633 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
Marine Structures Volume 67 Ranta , J & Polojärvi , A 2019 , ' Limit mechanisms for ice loads on inclined structures: Local crushing ' , Marine Structures , vol. 67 , 102633 . https://doi.org/10.1016/j.marstruc.2019.102633 0951-8339 PURE UUID: 61593cd5-25ee-4a3a-99bc-11159abf17e1 PURE ITEMURL: https://research.aalto.fi/en/publications/61593cd5-25ee-4a3a-99bc-11159abf17e1 PURE LINK: http://www.scopus.com/inward/record.url?scp=85066309161&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/34481788/ENG_Ranta_et_Poloj_rvi_Limit_Mechanisms_for_Ice_Marine_Structures.pdf https://aaltodoc.aalto.fi/handle/123456789/38825 URN:NBN:fi:aalto-201906203891 doi:10.1016/j.marstruc.2019.102633 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.marstruc.2019.102633 |
container_title |
Marine Structures |
container_volume |
67 |
container_start_page |
102633 |
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