Phase-field models of floe fracture in sea ice
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Published:2023-09-07
Issue:9
Volume:17
Page:3883-3893
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ISSN:1994-0424
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Container-title:The Cryosphere
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language:en
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Short-container-title:The Cryosphere
Author:
Dinh Huy,Giannakis Dimitrios,Slawinska Joanna,Stadler Georg
Abstract
Abstract. We develop a phase-field model of brittle fracture to model fracture
in sea ice floes. Phase fields allow for a variational formulation of
fracture by 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 is an important factor for the strength of ice
floes, and we 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.
Funder
Office of Naval Research
Publisher
Copernicus GmbH
Subject
Earth-Surface Processes,Water Science and Technology
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