Phase-field Models of Floe Fracture in Sea Ice
We develop a phase-field model of brittle fracture to model fracture of sea ice floes. Phase fields allow a variational formulation of fracture using an energy functional that combines a linear elastic energy with a term modeling the energetic cost of fracture. We study the fracture strength of ice floe...
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ftcopernicus:oai:publications.copernicus.org:egusphere105837 2023-05-15T18:17:28+02:00 Phase-field Models of Floe Fracture in Sea Ice Dinh, Huy Giannakis, Dimitrios Slawinska, Joanna Stadler, Georg 2022-08-18 application/pdf https://doi.org/10.5194/egusphere-2022-790 https://egusphere.copernicus.org/preprints/2022/egusphere-2022-790/ eng eng doi:10.5194/egusphere-2022-790 https://egusphere.copernicus.org/preprints/2022/egusphere-2022-790/ eISSN: Text 2022 ftcopernicus https://doi.org/10.5194/egusphere-2022-790 2022-08-22T16:22:54Z We develop a phase-field model of brittle fracture to model fracture of sea ice floes. Phase fields allow a variational formulation of fracture using an energy functional that combines a linear elastic energy with a term modeling the energetic cost of fracture. We study the fracture strength of ice floes with stochastic thickness variations under boundary forcings or displacements. Our approach models refrozen cracks or other linear ice impurities with stochastic models for thickness profiles. We find that the orientation of thickness variations are an important factor for the strength of ice floes and study the distribution of critical stresses leading to fracture. Potential applications to Discrete Element Method (DEM) simulations and field data from the ICEx 2018 campaign are discussed. Text Sea ice Copernicus Publications: E-Journals |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
We develop a phase-field model of brittle fracture to model fracture of sea ice floes. Phase fields allow a variational formulation of fracture using an energy functional that combines a linear elastic energy with a term modeling the energetic cost of fracture. We study the fracture strength of ice floes with stochastic thickness variations under boundary forcings or displacements. Our approach models refrozen cracks or other linear ice impurities with stochastic models for thickness profiles. We find that the orientation of thickness variations are an important factor for the strength of ice floes and study the distribution of critical stresses leading to fracture. Potential applications to Discrete Element Method (DEM) simulations and field data from the ICEx 2018 campaign are discussed. |
format |
Text |
author |
Dinh, Huy Giannakis, Dimitrios Slawinska, Joanna Stadler, Georg |
spellingShingle |
Dinh, Huy Giannakis, Dimitrios Slawinska, Joanna Stadler, Georg Phase-field Models of Floe Fracture in Sea Ice |
author_facet |
Dinh, Huy Giannakis, Dimitrios Slawinska, Joanna Stadler, Georg |
author_sort |
Dinh, Huy |
title |
Phase-field Models of Floe Fracture in Sea Ice |
title_short |
Phase-field Models of Floe Fracture in Sea Ice |
title_full |
Phase-field Models of Floe Fracture in Sea Ice |
title_fullStr |
Phase-field Models of Floe Fracture in Sea Ice |
title_full_unstemmed |
Phase-field Models of Floe Fracture in Sea Ice |
title_sort |
phase-field models of floe fracture in sea ice |
publishDate |
2022 |
url |
https://doi.org/10.5194/egusphere-2022-790 https://egusphere.copernicus.org/preprints/2022/egusphere-2022-790/ |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
eISSN: |
op_relation |
doi:10.5194/egusphere-2022-790 https://egusphere.copernicus.org/preprints/2022/egusphere-2022-790/ |
op_doi |
https://doi.org/10.5194/egusphere-2022-790 |
_version_ |
1766191701205975040 |