Nonlinear finite element simulations of ice sheet forces on conical structures
The present paper deals with interaction between an ice sheet and fixed, conical structures. The ice sheet as well as the structure is discretizied by finite elements. The interaction between the ice sheet and the conical structure is simulated using a special contact algorithm which makes it possib...
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Luleå tekniska universitet, Byggkonstruktion och -produktion
2006
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ftluleatu:oai:DiVA.org:ltu-37576 2023-05-15T14:22:10+02:00 Nonlinear finite element simulations of ice sheet forces on conical structures Sand, Björnar Fransson, Lennart 2006 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-37576 eng eng Luleå tekniska universitet, Byggkonstruktion och -produktion New York : American Society of Mechanical Engineers Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering : presented at the 25th International Conference on Offshore Mechanics and Arctic Engineering : June 4-9, 2006, Hamburg, Germany, p. 773-782 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-37576 urn:isbn:791837777 Local ba45d5c0-b61c-11db-bf94-000ea68e967b info:eu-repo/semantics/openAccess Infrastructure Engineering Infrastrukturteknik Conference paper info:eu-repo/semantics/conferenceObject text 2006 ftluleatu 2022-10-25T20:50:02Z The present paper deals with interaction between an ice sheet and fixed, conical structures. The ice sheet as well as the structure is discretizied by finite elements. The interaction between the ice sheet and the conical structure is simulated using a special contact algorithm which makes it possible to follow the gradually developing contact between the two bodies. As the configuration of the ice sheet under the interaction process changes, the buoyancy forces changes accordingly. This process is traced by introducing a continuous nonlinear foundation model to include the effects of buoyancy forces and specific weight of the ice. The mechanical behavior of ice is approximated using two different constitutive models. In the first case the ice is treated as an isotropic, brittle material, while in the second case the ice is considered being a transversal isotropic and brittle material. When the state of stress at a material point in the ice reaches the failure surface, cracking or crushing is said to occur. After cracking or crushing, the post peak behavior of the ice is approximated as a rigid plastic material. The results from the finite element simulations are compared with analytical methods for calculation of ice sheet forces on conical structures. Godkänd; 2006; Bibliografisk uppgift: CD-ROM. OMAE2006-92470; 20070206 (ysko) Conference Object Arctic Ice Sheet Luleå University of Technology Publications (DiVA) |
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Luleå University of Technology Publications (DiVA) |
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English |
topic |
Infrastructure Engineering Infrastrukturteknik |
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Infrastructure Engineering Infrastrukturteknik Sand, Björnar Fransson, Lennart Nonlinear finite element simulations of ice sheet forces on conical structures |
topic_facet |
Infrastructure Engineering Infrastrukturteknik |
description |
The present paper deals with interaction between an ice sheet and fixed, conical structures. The ice sheet as well as the structure is discretizied by finite elements. The interaction between the ice sheet and the conical structure is simulated using a special contact algorithm which makes it possible to follow the gradually developing contact between the two bodies. As the configuration of the ice sheet under the interaction process changes, the buoyancy forces changes accordingly. This process is traced by introducing a continuous nonlinear foundation model to include the effects of buoyancy forces and specific weight of the ice. The mechanical behavior of ice is approximated using two different constitutive models. In the first case the ice is treated as an isotropic, brittle material, while in the second case the ice is considered being a transversal isotropic and brittle material. When the state of stress at a material point in the ice reaches the failure surface, cracking or crushing is said to occur. After cracking or crushing, the post peak behavior of the ice is approximated as a rigid plastic material. The results from the finite element simulations are compared with analytical methods for calculation of ice sheet forces on conical structures. Godkänd; 2006; Bibliografisk uppgift: CD-ROM. OMAE2006-92470; 20070206 (ysko) |
format |
Conference Object |
author |
Sand, Björnar Fransson, Lennart |
author_facet |
Sand, Björnar Fransson, Lennart |
author_sort |
Sand, Björnar |
title |
Nonlinear finite element simulations of ice sheet forces on conical structures |
title_short |
Nonlinear finite element simulations of ice sheet forces on conical structures |
title_full |
Nonlinear finite element simulations of ice sheet forces on conical structures |
title_fullStr |
Nonlinear finite element simulations of ice sheet forces on conical structures |
title_full_unstemmed |
Nonlinear finite element simulations of ice sheet forces on conical structures |
title_sort |
nonlinear finite element simulations of ice sheet forces on conical structures |
publisher |
Luleå tekniska universitet, Byggkonstruktion och -produktion |
publishDate |
2006 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-37576 |
genre |
Arctic Ice Sheet |
genre_facet |
Arctic Ice Sheet |
op_relation |
Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering : presented at the 25th International Conference on Offshore Mechanics and Arctic Engineering : June 4-9, 2006, Hamburg, Germany, p. 773-782 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-37576 urn:isbn:791837777 Local ba45d5c0-b61c-11db-bf94-000ea68e967b |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766294826374922240 |