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Peridynamic Modelling of Fracture in Polycrystalline Ice

Published online by Cambridge University Press:  21 February 2020

Wei Lu
Affiliation:
University of Strathclyde, Glasgow, UK College of shipbuilding Engineering, Harbin Engineering University, Harbin, China
Mingyang Li
Affiliation:
University of Strathclyde, Glasgow, UK
Bozo Vazic
Affiliation:
University of Strathclyde, Glasgow, UK
Selda Oterkus*
Affiliation:
University of Strathclyde, Glasgow, UK
Erkan Oterkus
Affiliation:
University of Strathclyde, Glasgow, UK
Qing Wang
Affiliation:
College of shipbuilding Engineering, Harbin Engineering University, Harbin, China
*
*Corresponding author ([email protected])
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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.

Type
Research Article
Copyright
Copyright © 2020 The Society of Theoretical and Applied Mechanics

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