Uncertainty quantification in the ice-induced local damage assessment of a hull section
For the northernmost ocean regions, where the ice is occasionally present, one must design a robust structure that can withstand rare ice events (i.e., a glacial ice impact). Despite existing engineering practice is well developed, many challenges remain. One of them is an understanding of local ice...
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2611431 2023-05-15T14:22:13+02:00 Uncertainty quantification in the ice-induced local damage assessment of a hull section Kim, Ekaterina Yu, Zhaolong Amdahl, Jørgen Løset, Sveinung 2019 http://hdl.handle.net/11250/2611431 eng eng Port and Ocean Engineering under Arctic Conditions urn:issn:0376-6756 http://hdl.handle.net/11250/2611431 cristin:1716119 Proceedings - International Conference on Port and Ocean Engineering under Arctic Conditions Journal article Peer reviewed 2019 ftntnutrondheimi 2019-09-17T06:55:10Z For the northernmost ocean regions, where the ice is occasionally present, one must design a robust structure that can withstand rare ice events (i.e., a glacial ice impact). Despite existing engineering practice is well developed, many challenges remain. One of them is an understanding of local ice actions and action effects. The engineering community has adopted the limit-state design methodology for offshore structures, however, adequate guidance on how to design a structure against an accidental limit state (ALS) due to ice actions is lacking. The majority of existing experimental and full-scale ice data come from the structures that are virtually rigid and thus may not be representative for the scenarios where the structure deforms. Floating-ice impacts in which the structure sustains damage are in the shared-energy regime – both the ice and the structure dissipate energy through inelastic deformation. When analysts consider the shared-energy approach for assessment of the structure’s capability to withstand glacial ice impacts, they should be aware of the variations in input data and of how they might affect their analysis. This study is a follow up of the response assessment of a hull structure under glacial ice impact loads. The paper examines the required information for application of the shared energy method, the variances in that information, and how these variances affect the assessment of structural performance. Results of analysis indicate that using the rule-based ice load models may be insufficient for damage assessment under the ALS caused by ice. It requires a case-tailored view on the energy absorption capacity of ice and ALS criteria. publishedVersion Published by Port and Ocean Engineering under Arctic Conditions. http://www.poac.com/PastConferences.html Article in Journal/Newspaper Arctic Arctic NTNU Open Archive (Norwegian University of Science and Technology) Arctic |
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Open Polar |
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NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
For the northernmost ocean regions, where the ice is occasionally present, one must design a robust structure that can withstand rare ice events (i.e., a glacial ice impact). Despite existing engineering practice is well developed, many challenges remain. One of them is an understanding of local ice actions and action effects. The engineering community has adopted the limit-state design methodology for offshore structures, however, adequate guidance on how to design a structure against an accidental limit state (ALS) due to ice actions is lacking. The majority of existing experimental and full-scale ice data come from the structures that are virtually rigid and thus may not be representative for the scenarios where the structure deforms. Floating-ice impacts in which the structure sustains damage are in the shared-energy regime – both the ice and the structure dissipate energy through inelastic deformation. When analysts consider the shared-energy approach for assessment of the structure’s capability to withstand glacial ice impacts, they should be aware of the variations in input data and of how they might affect their analysis. This study is a follow up of the response assessment of a hull structure under glacial ice impact loads. The paper examines the required information for application of the shared energy method, the variances in that information, and how these variances affect the assessment of structural performance. Results of analysis indicate that using the rule-based ice load models may be insufficient for damage assessment under the ALS caused by ice. It requires a case-tailored view on the energy absorption capacity of ice and ALS criteria. publishedVersion Published by Port and Ocean Engineering under Arctic Conditions. http://www.poac.com/PastConferences.html |
format |
Article in Journal/Newspaper |
author |
Kim, Ekaterina Yu, Zhaolong Amdahl, Jørgen Løset, Sveinung |
spellingShingle |
Kim, Ekaterina Yu, Zhaolong Amdahl, Jørgen Løset, Sveinung Uncertainty quantification in the ice-induced local damage assessment of a hull section |
author_facet |
Kim, Ekaterina Yu, Zhaolong Amdahl, Jørgen Løset, Sveinung |
author_sort |
Kim, Ekaterina |
title |
Uncertainty quantification in the ice-induced local damage assessment of a hull section |
title_short |
Uncertainty quantification in the ice-induced local damage assessment of a hull section |
title_full |
Uncertainty quantification in the ice-induced local damage assessment of a hull section |
title_fullStr |
Uncertainty quantification in the ice-induced local damage assessment of a hull section |
title_full_unstemmed |
Uncertainty quantification in the ice-induced local damage assessment of a hull section |
title_sort |
uncertainty quantification in the ice-induced local damage assessment of a hull section |
publisher |
Port and Ocean Engineering under Arctic Conditions |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2611431 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic |
genre_facet |
Arctic Arctic |
op_source |
Proceedings - International Conference on Port and Ocean Engineering under Arctic Conditions |
op_relation |
urn:issn:0376-6756 http://hdl.handle.net/11250/2611431 cristin:1716119 |
_version_ |
1766294859886362624 |