Numerical model for a failure process of an ice sheet

Arttu Polojärvi

doi:10.1016/j.compstruc.2022.106828

Numerical model for a failure process of an ice sheet

Arttu Polojärvi

Department of Energy and Mechanical Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

9 Citations (Scopus)

105 Downloads (Pure)

Abstract

Model for describing a three-dimensional continuous failure process of an ice sheet is introduced. The presented model is based on the combined finite-discrete element method. The ice sheet consists of polyhedral rigid discrete elements joined by a lattice of Timoshenko beam elements, which go through cohesive softening upon sheet failure. The contact model accounts for inter-particle friction and local failure of ice in contacts. The model is carefully validated against a laboratory experiment, where an ice sheet is pushed against an inclined plane. Convincing agreement between the modelled and experimental failure process is found. The effect of ice sheet tessellation and element size is tested and found to be only moderate. The model compares favorably to earlier ones: The modelling and the experimental results agree, the domain sizes used can be large, and the modelled failure processes are long in duration. Requirements for numerical modelling of ice failure processes are discussed. (C) 2022 The Author(s). Published by Elsevier Ltd.

Original language	English
Article number	106828
Number of pages	13
Journal	Computers and Structures
Volume	269
DOIs	https://doi.org/10.1016/j.compstruc.2022.106828
Publication status	Published - Sept 2022
MoE publication type	A1 Journal article-refereed

Keywords

Combined finite-discrete element method
Discrete element method
Ice mechanics
Ice-structure interaction
Multi-fracture
Numerical modelling

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10.1016/j.compstruc.2022.106828Licence: CC BY

1-s2.0-S0045794922000888-mainFinal published version, 3.61 MBLicence: CC BY

Cite this

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title = "Numerical model for a failure process of an ice sheet",

abstract = "Model for describing a three-dimensional continuous failure process of an ice sheet is introduced. The presented model is based on the combined finite-discrete element method. The ice sheet consists of polyhedral rigid discrete elements joined by a lattice of Timoshenko beam elements, which go through cohesive softening upon sheet failure. The contact model accounts for inter-particle friction and local failure of ice in contacts. The model is carefully validated against a laboratory experiment, where an ice sheet is pushed against an inclined plane. Convincing agreement between the modelled and experimental failure process is found. The effect of ice sheet tessellation and element size is tested and found to be only moderate. The model compares favorably to earlier ones: The modelling and the experimental results agree, the domain sizes used can be large, and the modelled failure processes are long in duration. Requirements for numerical modelling of ice failure processes are discussed. (C) 2022 The Author(s). Published by Elsevier Ltd.",

keywords = "Combined finite-discrete element method, Discrete element method, Ice mechanics, Ice-structure interaction, Multi-fracture, Numerical modelling",

author = "Arttu Poloj{\"a}rvi",

note = "Funding Information: The author is grateful for the financial support from the Academy of Finland research project (309830) Ice Block Breakage: Experiments and Simulations (ICEBES). Dr. Janne Ranta and Dr. Devin O{\textquoteright}Connor are thanked for the insightful discussions on the contact force model, its parameterization, and estimates on added mass. The research leading to this article was partly performed while visiting Thayer School of Engineering at Dartmouth College (Hanover, NH, USA) during spring 2020. Thanks are extended to Prof. Erland Schulson for hosting and the Finnish Maritime Foundation for partial funding of the visit. CSC–IT Center for Science (Finland) is acknowledged for computational resources under the project (2000971) Mechanics and Fracture of Ice. Author also wishes to thank the five anonymous reviewers whose comments helped to improve the manuscript. Funding Information: The author is grateful for the financial support from the Academy of Finland research project (309830) Ice Block Breakage: Experiments and Simulations (ICEBES). Dr. Janne Ranta and Dr. Devin O'Connor are thanked for the insightful discussions on the contact force model, its parameterization, and estimates on added mass. The research leading to this article was partly performed while visiting Thayer School of Engineering at Dartmouth College (Hanover, NH, USA) during spring 2020. Thanks are extended to Prof. Erland Schulson for hosting and the Finnish Maritime Foundation for partial funding of the visit. CSC–IT Center for Science (Finland) is acknowledged for computational resources under the project (2000971) Mechanics and Fracture of Ice. Author also wishes to thank the five anonymous reviewers whose comments helped to improve the manuscript. Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2022",

month = sep,

doi = "10.1016/j.compstruc.2022.106828",

language = "English",

volume = "269",

journal = "Computers and Structures",

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N1 - Funding Information: The author is grateful for the financial support from the Academy of Finland research project (309830) Ice Block Breakage: Experiments and Simulations (ICEBES). Dr. Janne Ranta and Dr. Devin O’Connor are thanked for the insightful discussions on the contact force model, its parameterization, and estimates on added mass. The research leading to this article was partly performed while visiting Thayer School of Engineering at Dartmouth College (Hanover, NH, USA) during spring 2020. Thanks are extended to Prof. Erland Schulson for hosting and the Finnish Maritime Foundation for partial funding of the visit. CSC–IT Center for Science (Finland) is acknowledged for computational resources under the project (2000971) Mechanics and Fracture of Ice. Author also wishes to thank the five anonymous reviewers whose comments helped to improve the manuscript. Funding Information: The author is grateful for the financial support from the Academy of Finland research project (309830) Ice Block Breakage: Experiments and Simulations (ICEBES). Dr. Janne Ranta and Dr. Devin O'Connor are thanked for the insightful discussions on the contact force model, its parameterization, and estimates on added mass. The research leading to this article was partly performed while visiting Thayer School of Engineering at Dartmouth College (Hanover, NH, USA) during spring 2020. Thanks are extended to Prof. Erland Schulson for hosting and the Finnish Maritime Foundation for partial funding of the visit. CSC–IT Center for Science (Finland) is acknowledged for computational resources under the project (2000971) Mechanics and Fracture of Ice. Author also wishes to thank the five anonymous reviewers whose comments helped to improve the manuscript. Publisher Copyright: © 2022 The Author(s)

PY - 2022/9

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N2 - Model for describing a three-dimensional continuous failure process of an ice sheet is introduced. The presented model is based on the combined finite-discrete element method. The ice sheet consists of polyhedral rigid discrete elements joined by a lattice of Timoshenko beam elements, which go through cohesive softening upon sheet failure. The contact model accounts for inter-particle friction and local failure of ice in contacts. The model is carefully validated against a laboratory experiment, where an ice sheet is pushed against an inclined plane. Convincing agreement between the modelled and experimental failure process is found. The effect of ice sheet tessellation and element size is tested and found to be only moderate. The model compares favorably to earlier ones: The modelling and the experimental results agree, the domain sizes used can be large, and the modelled failure processes are long in duration. Requirements for numerical modelling of ice failure processes are discussed. (C) 2022 The Author(s). Published by Elsevier Ltd.

AB - Model for describing a three-dimensional continuous failure process of an ice sheet is introduced. The presented model is based on the combined finite-discrete element method. The ice sheet consists of polyhedral rigid discrete elements joined by a lattice of Timoshenko beam elements, which go through cohesive softening upon sheet failure. The contact model accounts for inter-particle friction and local failure of ice in contacts. The model is carefully validated against a laboratory experiment, where an ice sheet is pushed against an inclined plane. Convincing agreement between the modelled and experimental failure process is found. The effect of ice sheet tessellation and element size is tested and found to be only moderate. The model compares favorably to earlier ones: The modelling and the experimental results agree, the domain sizes used can be large, and the modelled failure processes are long in duration. Requirements for numerical modelling of ice failure processes are discussed. (C) 2022 The Author(s). Published by Elsevier Ltd.

KW - Combined finite-discrete element method

KW - Discrete element method

KW - Ice mechanics

KW - Ice-structure interaction

KW - Multi-fracture

KW - Numerical modelling

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VL - 269

JO - Computers and Structures

JF - Computers and Structures

M1 - 106828

ER -

Numerical model for a failure process of an ice sheet

Abstract

Keywords

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ICEBES: Ice Block Breakage: Experiments and Simulations (ICEBES)

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Numerical model for a failure process of an ice sheet

Abstract

Keywords

Access to Document

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Projects

ICEBES: Ice Block Breakage: Experiments and Simulations (ICEBES)

Cite this