Peridynamic modelling of fracture in polycrystalline ice

Research output: Contribution to journalArticle

Abstract

In this study, a peridynamic material model for a polycrystalline ice is utilised to investigate its fracture behaviour under dynamic loading condition. First, the material model was validated by considering a single grain, double grains and polycrystalline structure under tension loading condition. Peridynamic results are compared against finite element analysis results without allowing failure. After validating the material model, dynamic analysis of a polycrystalline ice material with two pre-existing cracks under tension loading is performed by considering weak and strong grain boundaries with respect to grain interiors. Numerical results show that the effect of microstructure is significant for weak grain boundaries. On the other hand, for strong grain boundaries, the effect of microstructure is insignificant. The evaluated results have demonstrated that peridynamics can be a very good alternative numerical tool for fracture analysis of polycrystalline ice material.
Original languageEnglish
JournalJournal of Mechanics
Publication statusAccepted/In press - 18 Nov 2019

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Ice
ice
grain boundaries
Grain Boundary
Modeling
Grain boundaries
microstructure
Microstructure
dynamic models
cracks
Dynamic Analysis
Dynamic analysis
Crack
Interior
Model
Finite Element
Cracks
Finite element method
Numerical Results
Alternatives

Keywords

  • peridynamics
  • polycrystalline ice
  • fracture
  • numerical

Cite this

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title = "Peridynamic modelling of fracture in polycrystalline ice",
abstract = "In this study, a peridynamic material model for a polycrystalline ice is utilised to investigate its fracture behaviour under dynamic loading condition. First, the material model was validated by considering a single grain, double grains and polycrystalline structure under tension loading condition. Peridynamic results are compared against finite element analysis results without allowing failure. After validating the material model, dynamic analysis of a polycrystalline ice material with two pre-existing cracks under tension loading is performed by considering weak and strong grain boundaries with respect to grain interiors. Numerical results show that the effect of microstructure is significant for weak grain boundaries. On the other hand, for strong grain boundaries, the effect of microstructure is insignificant. The evaluated results have demonstrated that peridynamics can be a very good alternative numerical tool for fracture analysis of polycrystalline ice material.",
keywords = "peridynamics, polycrystalline ice, fracture, numerical",
author = "Wei Lu and Mingyang Li and Bozo Vazic and Selda Oterkus and Erkan Oterkus and Qing Wang",
year = "2019",
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Peridynamic modelling of fracture in polycrystalline ice. / Lu, Wei; Li, Mingyang; Vazic, Bozo; Oterkus, Selda; Oterkus, Erkan; Wang, Qing.

In: Journal of Mechanics, 18.11.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Peridynamic modelling of fracture in polycrystalline ice

AU - Lu, Wei

AU - Li, Mingyang

AU - Vazic, Bozo

AU - Oterkus, Selda

AU - Oterkus, Erkan

AU - Wang, Qing

PY - 2019/11/18

Y1 - 2019/11/18

N2 - In this study, a peridynamic material model for a polycrystalline ice is utilised to investigate its fracture behaviour under dynamic loading condition. First, the material model was validated by considering a single grain, double grains and polycrystalline structure under tension loading condition. Peridynamic results are compared against finite element analysis results without allowing failure. After validating the material model, dynamic analysis of a polycrystalline ice material with two pre-existing cracks under tension loading is performed by considering weak and strong grain boundaries with respect to grain interiors. Numerical results show that the effect of microstructure is significant for weak grain boundaries. On the other hand, for strong grain boundaries, the effect of microstructure is insignificant. The evaluated results have demonstrated that peridynamics can be a very good alternative numerical tool for fracture analysis of polycrystalline ice material.

AB - In this study, a peridynamic material model for a polycrystalline ice is utilised to investigate its fracture behaviour under dynamic loading condition. First, the material model was validated by considering a single grain, double grains and polycrystalline structure under tension loading condition. Peridynamic results are compared against finite element analysis results without allowing failure. After validating the material model, dynamic analysis of a polycrystalline ice material with two pre-existing cracks under tension loading is performed by considering weak and strong grain boundaries with respect to grain interiors. Numerical results show that the effect of microstructure is significant for weak grain boundaries. On the other hand, for strong grain boundaries, the effect of microstructure is insignificant. The evaluated results have demonstrated that peridynamics can be a very good alternative numerical tool for fracture analysis of polycrystalline ice material.

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