Scale Effects in Lattice-Based Modeling of Ice Sheet

Arttu Polojärvi; Ville-Pekka Lilja; Jukka Tuhkuri; Jani Paavilainen

Scale Effects in Lattice-Based Modeling of Ice Sheet

Arttu Polojärvi, Ville-Pekka Lilja, Jukka Tuhkuri, Jani Paavilainen

Department of Energy and Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

Three-dimensional numerical modelling of an intact ice sheet can be performed using different techniques. Models aiming for computational efficiency often rely on lattices of beams or different types of springs, that is, ice sheet is modelled using a network of beams or springs, which connect rigid bodies to each other. This technique is often used in the context of discrete element method, combined finite-discrete element method, and bonded particle models. Often the use of lattices introduces scale effects, which show in the response of a modeled ice sheet to external loading. Another source of scale effects can be the used material model. This paper discusses the scale effects of a model, which is based on a network of Timoshenko beams that fracture through a cohesive softening process. The results appear to scale as would be expected for quasi-brittle materials.

Original language	English
Title of host publication	Proceedings of the 25th IAHR International Symposium on Ice
Publisher	International Association for Hydro-Environment Engineering and Research
Number of pages	10
ISBN (Electronic)	978-82-7598-120-0
Publication status	Published - 2021
MoE publication type	A4 Conference publication
Event	International Association for Hydro-Environment Engineering and Research International Symposium on Ice - Trondheim, Norway Duration: 23 Nov 2020 → 25 Nov 2020 Conference number: 25

Publication series

Name	IAHR International Symposium on Ice
ISSN (Electronic)	2414-6331

Conference

Conference	International Association for Hydro-Environment Engineering and Research International Symposium on Ice
Abbreviated title	IAHR-ICE
Country/Territory	Norway
City	Trondheim
Period	23/11/2020 → 25/11/2020

Access to Document

https://www.iahr.org/library/technical?pid=304

ICEBES: Ice Block Breakage: Experiments and Simulations (ICEBES)
Polojärvi, A. (Principal investigator), Ranta, J. (Project Member), Prasanna, M. (Project Member) & Wei, M. (Project Member)
01/09/2017 → 31/08/2021
Project: Academy of Finland: Other research funding

Cite this

@inproceedings{1fce78220b6646209118e8da516a089d,

title = "Scale Effects in Lattice-Based Modeling of Ice Sheet",

abstract = "Three-dimensional numerical modelling of an intact ice sheet can be performed using different techniques. Models aiming for computational efficiency often rely on lattices of beams or different types of springs, that is, ice sheet is modelled using a network of beams or springs, which connect rigid bodies to each other. This technique is often used in the context of discrete element method, combined finite-discrete element method, and bonded particle models. Often the use of lattices introduces scale effects, which show in the response of a modeled ice sheet to external loading. Another source of scale effects can be the used material model. This paper discusses the scale effects of a model, which is based on a network of Timoshenko beams that fracture through a cohesive softening process. The results appear to scale as would be expected for quasi-brittle materials. ",

author = "Arttu Poloj{\"a}rvi and Ville-Pekka Lilja and Jukka Tuhkuri and Jani Paavilainen",

year = "2021",

language = "English",

series = "IAHR International Symposium on Ice",

publisher = "International Association for Hydro-Environment Engineering and Research",

booktitle = "Proceedings of the 25th IAHR International Symposium on Ice",

address = "China",

note = "International Association for Hydro-Environment Engineering and Research International Symposium on Ice, IAHR-ICE ; Conference date: 23-11-2020 Through 25-11-2020",

}

Polojärvi, A, Lilja, V-P, Tuhkuri, J & Paavilainen, J 2021, Scale Effects in Lattice-Based Modeling of Ice Sheet. in Proceedings of the 25th IAHR International Symposium on Ice. IAHR International Symposium on Ice, International Association for Hydro-Environment Engineering and Research, International Association for Hydro-Environment Engineering and Research International Symposium on Ice, Trondheim, Norway, 23/11/2020. <https://www.iahr.org/library/technical?pid=304>

Scale Effects in Lattice-Based Modeling of Ice Sheet. / Polojärvi, Arttu; Lilja, Ville-Pekka; Tuhkuri, Jukka et al.
Proceedings of the 25th IAHR International Symposium on Ice. International Association for Hydro-Environment Engineering and Research, 2021. (IAHR International Symposium on Ice).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Scale Effects in Lattice-Based Modeling of Ice Sheet

AU - Polojärvi, Arttu

AU - Lilja, Ville-Pekka

AU - Tuhkuri, Jukka

AU - Paavilainen, Jani

N1 - Conference code: 25

PY - 2021

Y1 - 2021

N2 - Three-dimensional numerical modelling of an intact ice sheet can be performed using different techniques. Models aiming for computational efficiency often rely on lattices of beams or different types of springs, that is, ice sheet is modelled using a network of beams or springs, which connect rigid bodies to each other. This technique is often used in the context of discrete element method, combined finite-discrete element method, and bonded particle models. Often the use of lattices introduces scale effects, which show in the response of a modeled ice sheet to external loading. Another source of scale effects can be the used material model. This paper discusses the scale effects of a model, which is based on a network of Timoshenko beams that fracture through a cohesive softening process. The results appear to scale as would be expected for quasi-brittle materials.

AB - Three-dimensional numerical modelling of an intact ice sheet can be performed using different techniques. Models aiming for computational efficiency often rely on lattices of beams or different types of springs, that is, ice sheet is modelled using a network of beams or springs, which connect rigid bodies to each other. This technique is often used in the context of discrete element method, combined finite-discrete element method, and bonded particle models. Often the use of lattices introduces scale effects, which show in the response of a modeled ice sheet to external loading. Another source of scale effects can be the used material model. This paper discusses the scale effects of a model, which is based on a network of Timoshenko beams that fracture through a cohesive softening process. The results appear to scale as would be expected for quasi-brittle materials.

M3 - Conference article in proceedings

T3 - IAHR International Symposium on Ice

BT - Proceedings of the 25th IAHR International Symposium on Ice

PB - International Association for Hydro-Environment Engineering and Research

T2 - International Association for Hydro-Environment Engineering and Research International Symposium on Ice

Y2 - 23 November 2020 through 25 November 2020

ER -

Scale Effects in Lattice-Based Modeling of Ice Sheet

Abstract

Publication series

Conference

Access to Document

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Projects

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

Cite this