Limitations of the modelling of crack propagating through heterogeneous material using a phase field approach

Hervé Henry

doi:10.1016/j.tafmec.2019.102384

Limitations of the modelling of crack propagating through heterogeneous material using a phase field approach

Hervé Henry

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The modeling of crack propagation in a heterogeneous material using a phase field model is studied numerically in a simple test case: the crack meets a wedge of higher fracture energy. It is shown that when the crack cannot enter the wedge, phase field results are in qualitative agreement with theoretical predictions with moderate quantitative discrepancies. When the crack can propagate in both regions, numerical results show that the interplay of diffuse interface modelling used in the phase field model with the interface between the two regions induces spurious effects that are unphysical.

Original language	English
Article number	102384
Journal	Theoretical and Applied Fracture Mechanics
Volume	104
DOIs	https://doi.org/10.1016/j.tafmec.2019.102384
Publication status	Published - 1 Dec 2019

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10.1016/j.tafmec.2019.102384

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title = "Limitations of the modelling of crack propagating through heterogeneous material using a phase field approach",

abstract = "The modeling of crack propagation in a heterogeneous material using a phase field model is studied numerically in a simple test case: the crack meets a wedge of higher fracture energy. It is shown that when the crack cannot enter the wedge, phase field results are in qualitative agreement with theoretical predictions with moderate quantitative discrepancies. When the crack can propagate in both regions, numerical results show that the interplay of diffuse interface modelling used in the phase field model with the interface between the two regions induces spurious effects that are unphysical.",

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AB - The modeling of crack propagation in a heterogeneous material using a phase field model is studied numerically in a simple test case: the crack meets a wedge of higher fracture energy. It is shown that when the crack cannot enter the wedge, phase field results are in qualitative agreement with theoretical predictions with moderate quantitative discrepancies. When the crack can propagate in both regions, numerical results show that the interplay of diffuse interface modelling used in the phase field model with the interface between the two regions induces spurious effects that are unphysical.

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Limitations of the modelling of crack propagating through heterogeneous material using a phase field approach

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