Modeling Splitting and Spalling of Columnar Ice Compressed Biaxially

The Role of Crack Nucleation

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Columnar ice exhibits three failure modes under increasing lateral confinement across the columns: splitting, Coulombic shear faulting, and spalling. Modeling of the splitting-to-spalling transition under increasing confined compression is considered here. Shear faulting is not considered. A three-dimensional crack nucleation model, based on a grain boundary sliding approach, is formulated to model brittle failure mechanisms under biaxial compression along and across the columns. The growth of the nucleated crack is based on the wing crack approach. The numerical results were in good agreement with experimental data for both across-column and along-column biaxial compression. The model shows that in columnar ice, crack nucleation preceded by sliding along tapered grain boundaries induces splitting-to-spalling transition under increasing confinement.

Original languageEnglish
Pages (from-to)3271-3287
Number of pages16
JournalJournal of Geophysical Research: Solid Earth
Volume124
Issue number4
DOIs
Publication statusPublished - 25 May 2019
MoE publication typeA1 Journal article-refereed

Fingerprint

spalling
Spalling
Ice
nucleation
ice
crack
Nucleation
cracks
Cracks
Faulting
compression
grain boundary
modeling
sliding
faulting
grain boundaries
shear
brittle failure
Grain boundary sliding
failure modes

Keywords

  • anisotropic damage
  • brittle failure
  • columnar ice
  • FE modeling
  • splitting
  • wing crack

Cite this

@article{9879d94ca34d498080e1bd052bc2c50f,
title = "Modeling Splitting and Spalling of Columnar Ice Compressed Biaxially: The Role of Crack Nucleation",
abstract = "Columnar ice exhibits three failure modes under increasing lateral confinement across the columns: splitting, Coulombic shear faulting, and spalling. Modeling of the splitting-to-spalling transition under increasing confined compression is considered here. Shear faulting is not considered. A three-dimensional crack nucleation model, based on a grain boundary sliding approach, is formulated to model brittle failure mechanisms under biaxial compression along and across the columns. The growth of the nucleated crack is based on the wing crack approach. The numerical results were in good agreement with experimental data for both across-column and along-column biaxial compression. The model shows that in columnar ice, crack nucleation preceded by sliding along tapered grain boundaries induces splitting-to-spalling transition under increasing confinement.",
keywords = "anisotropic damage, brittle failure, columnar ice, FE modeling, splitting, wing crack",
author = "Kari Kolari",
year = "2019",
month = "5",
day = "25",
doi = "10.1029/2018JB017032",
language = "English",
volume = "124",
pages = "3271--3287",
journal = "Journal of Geophysical Research: Solid Earth",
issn = "2169-9313",
publisher = "Wiley-Blackwell",
number = "4",

}

Modeling Splitting and Spalling of Columnar Ice Compressed Biaxially : The Role of Crack Nucleation. / Kolari, Kari.

In: Journal of Geophysical Research: Solid Earth, Vol. 124, No. 4, 25.05.2019, p. 3271-3287.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modeling Splitting and Spalling of Columnar Ice Compressed Biaxially

T2 - The Role of Crack Nucleation

AU - Kolari, Kari

PY - 2019/5/25

Y1 - 2019/5/25

N2 - Columnar ice exhibits three failure modes under increasing lateral confinement across the columns: splitting, Coulombic shear faulting, and spalling. Modeling of the splitting-to-spalling transition under increasing confined compression is considered here. Shear faulting is not considered. A three-dimensional crack nucleation model, based on a grain boundary sliding approach, is formulated to model brittle failure mechanisms under biaxial compression along and across the columns. The growth of the nucleated crack is based on the wing crack approach. The numerical results were in good agreement with experimental data for both across-column and along-column biaxial compression. The model shows that in columnar ice, crack nucleation preceded by sliding along tapered grain boundaries induces splitting-to-spalling transition under increasing confinement.

AB - Columnar ice exhibits three failure modes under increasing lateral confinement across the columns: splitting, Coulombic shear faulting, and spalling. Modeling of the splitting-to-spalling transition under increasing confined compression is considered here. Shear faulting is not considered. A three-dimensional crack nucleation model, based on a grain boundary sliding approach, is formulated to model brittle failure mechanisms under biaxial compression along and across the columns. The growth of the nucleated crack is based on the wing crack approach. The numerical results were in good agreement with experimental data for both across-column and along-column biaxial compression. The model shows that in columnar ice, crack nucleation preceded by sliding along tapered grain boundaries induces splitting-to-spalling transition under increasing confinement.

KW - anisotropic damage

KW - brittle failure

KW - columnar ice

KW - FE modeling

KW - splitting

KW - wing crack

UR - http://www.scopus.com/inward/record.url?scp=85063886207&partnerID=8YFLogxK

U2 - 10.1029/2018JB017032

DO - 10.1029/2018JB017032

M3 - Article

VL - 124

SP - 3271

EP - 3287

JO - Journal of Geophysical Research: Solid Earth

JF - Journal of Geophysical Research: Solid Earth

SN - 2169-9313

IS - 4

ER -