Cohesive zone micromechanical model for compressive and tensile failure of polycrystalline ice

Gribanov, Igor; Taylor, Rocky; Sarracino, Robert

doi:10.1016/j.engfracmech.2018.04.023

Cited by 18 publications

(2 citation statements)

References 23 publications

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“…The work by Gribanov et al [7] models the fracture of polycrystalline cylindrical samples under uniaxial loading. The ice is represented by three-dimensional geometry that is partitioned into separate polygonal grains.…”

Section: Related Workmentioning

confidence: 99%

Investigating Ice Loads on Subsea Pipelines with Cohesive Zone Model in Abaqus

Gribanov,

Taylor,

Thijssen

et al. 2023

Modelling

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Subsea pipelines and cables placed in ice-prone regions may be at risk of iceberg damage. In particular, pipes that are not buried may come in direct contact with iceberg keels. Knowing the range of interaction forces helps to assess the types and magnitudes of potential damage. Experimental studies provide the most valuable data about the interaction forces, while numerical modeling may give insight into configurations that are difficult to study experimentally. This work applies the cohesive zone model to investigate the fracture behavior of ice samples. Simulations are performed in 2D with Abaqus explicit solver. Modeled interaction forces from multiple simulations are recorded and compared to understand how the geometry of the samples affects the fracture. Repeat interactions with different grain configurations are conducted to investigate associated variance in fracture patterns and loads. t-tests show that the force application angle and the indenter’s position significantly affect the fracture force.

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Section: Related Workmentioning

confidence: 99%

Investigating Ice Loads on Subsea Pipelines with Cohesive Zone Model in Abaqus

Gribanov,

Taylor,

Thijssen

et al. 2023

Modelling

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“…For the polycrystalline ice, Gribanov et al [14] implemented the cohesive zone model within an implicit finite element method to simulate the 4-point bending test of freshwater ice beam. Furthermore, the same CZM model is utilized by Gribanov et al [15] to model the fracture behaviour of polycrystalline cylindrical samples under uniaxial loading conditions. The numerical results capture the observations fracture from the experiment.…”

Section: Introductionmentioning

confidence: 99%

Peridynamic Modelling of Fracture in Polycrystalline Ice

Lü

Važić

et al. 2020

J. mech.

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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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Parallel implementation of implicit finite element model with cohesive zones and collision response using CUDA

Gribanov

Taylor

Sarracino

2018

Numerical Meth Engineering

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Summary The aim of this work is to efficiently implement the Park‐Paulino‐Roesler cohesive zone model with the objective of creating realistic high‐resolution simulations of material deformation, fracture, and postfracture behavior. Intrinsically, unstructured meshes can create more realistic fracture patterns in bulk material than structured meshes. Implicit methods, stable for much larger time steps, have greater potential to model both fracture and postfracture behavior without sacrificing speed of execution. Several technical contributions are presented, including (i) GPU‐accelerated implementation of the Park‐Paulino‐Roesler cohesive zone model, (ii) efficient creation of sparse matrix structure, and (iii) comparison of different unloading/reloading relations when using an implicit scheme. A potential‐based collision response scheme was implemented that allows one to model the interaction of fragmented material. Several test simulations are carried out to demonstrate the flexibility of the model and its ability to reproduce different materials under various loading conditions. Benchmarking results show that most of the computational time is spent by the third‐party solver library, meaning that other operations do not require optimization. The library is made available as open source.

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Cohesive zone micromechanical model for compressive and tensile failure of polycrystalline ice

Cited by 18 publications

References 23 publications

Investigating Ice Loads on Subsea Pipelines with Cohesive Zone Model in Abaqus

Investigating Ice Loads on Subsea Pipelines with Cohesive Zone Model in Abaqus

Peridynamic Modelling of Fracture in Polycrystalline Ice

Parallel implementation of implicit finite element model with cohesive zones and collision response using CUDA

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