A non-matching finite element-scaled boundary finite element coupled method for linear elastic crack propagation modelling

Zhenjun Yang; X.F. Wang; D.S. Yin; Ch Zhang

doi:10.1016/j.compstruc.2015.02.034

A non-matching finite element-scaled boundary finite element coupled method for linear elastic crack propagation modelling

Zhenjun Yang, X.F. Wang, D.S. Yin, Ch Zhang

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

44 Citations (Scopus)

Abstract

A novel method coupling the scaled boundary finite element method (SBFEM) and the finite element method (FEM) is developed for linear elastic fracture modelling. A very simple but effective remeshing procedure based on the FE mesh only is used to accommodate crack propagation. The crack-tip region is modelled by an SBFE subdomain whose semi-analytical displacement solutions are used to extract accurate stress intensity factors. The SBFE subdomain is coupled with the surrounding FE mesh through virtual interfaces so that non-matching nodal discretisations of the shared boundaries can be used and only one SBFE subdomain is needed at a crack-tip. A few plane problems are modelled to validate the new method.

Original language	English
Pages (from-to)	126-136
Journal	Computers and Structures
Volume	153
Issue number	June
DOIs	https://doi.org/10.1016/j.compstruc.2015.02.034
Publication status	Published - 25 Mar 2015

Bibliographical note

This paper is not available on the repository.

Keywords

Scaled boundary finite element method
Non-matching mesh
Stress intensity factors
Crack propagation
Remeshing procedure
Linear elastic fracture mechanics

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10.1016/j.compstruc.2015.02.034

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title = "A non-matching finite element-scaled boundary finite element coupled method for linear elastic crack propagation modelling",

abstract = "A novel method coupling the scaled boundary finite element method (SBFEM) and the finite element method (FEM) is developed for linear elastic fracture modelling. A very simple but effective remeshing procedure based on the FE mesh only is used to accommodate crack propagation. The crack-tip region is modelled by an SBFE subdomain whose semi-analytical displacement solutions are used to extract accurate stress intensity factors. The SBFE subdomain is coupled with the surrounding FE mesh through virtual interfaces so that non-matching nodal discretisations of the shared boundaries can be used and only one SBFE subdomain is needed at a crack-tip. A few plane problems are modelled to validate the new method.",

keywords = "Scaled boundary finite element method, Non-matching mesh, Stress intensity factors, Crack propagation, Remeshing procedure, Linear elastic fracture mechanics",

author = "Zhenjun Yang and X.F. Wang and D.S. Yin and Ch Zhang",

note = "This paper is not available on the repository.",

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doi = "10.1016/j.compstruc.2015.02.034",

language = "English",

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T1 - A non-matching finite element-scaled boundary finite element coupled method for linear elastic crack propagation modelling

AU - Yang, Zhenjun

AU - Wang, X.F.

AU - Yin, D.S.

AU - Zhang, Ch

N1 - This paper is not available on the repository.

PY - 2015/3/25

Y1 - 2015/3/25

N2 - A novel method coupling the scaled boundary finite element method (SBFEM) and the finite element method (FEM) is developed for linear elastic fracture modelling. A very simple but effective remeshing procedure based on the FE mesh only is used to accommodate crack propagation. The crack-tip region is modelled by an SBFE subdomain whose semi-analytical displacement solutions are used to extract accurate stress intensity factors. The SBFE subdomain is coupled with the surrounding FE mesh through virtual interfaces so that non-matching nodal discretisations of the shared boundaries can be used and only one SBFE subdomain is needed at a crack-tip. A few plane problems are modelled to validate the new method.

AB - A novel method coupling the scaled boundary finite element method (SBFEM) and the finite element method (FEM) is developed for linear elastic fracture modelling. A very simple but effective remeshing procedure based on the FE mesh only is used to accommodate crack propagation. The crack-tip region is modelled by an SBFE subdomain whose semi-analytical displacement solutions are used to extract accurate stress intensity factors. The SBFE subdomain is coupled with the surrounding FE mesh through virtual interfaces so that non-matching nodal discretisations of the shared boundaries can be used and only one SBFE subdomain is needed at a crack-tip. A few plane problems are modelled to validate the new method.

KW - Scaled boundary finite element method

KW - Non-matching mesh

KW - Stress intensity factors

KW - Crack propagation

KW - Remeshing procedure

KW - Linear elastic fracture mechanics

U2 - 10.1016/j.compstruc.2015.02.034

DO - 10.1016/j.compstruc.2015.02.034

M3 - Article

SN - 0045-7949

VL - 153

SP - 126

EP - 136

JO - Computers and Structures

JF - Computers and Structures

IS - June

ER -

A non-matching finite element-scaled boundary finite element coupled method for linear elastic crack propagation modelling

Abstract

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Keywords

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