A polygon scaled boundary finite element formulation for transient coupled thermoelastic fracture problems

E. T. Ooi; M. D. Iqbal; C. Birk; S. Natarajan; E. H. Ooi; C. Song

doi:10.1016/j.engfracmech.2020.107300

A polygon scaled boundary finite element formulation for transient coupled thermoelastic fracture problems

E. T. Ooi, M. D. Iqbal, C. Birk, S. Natarajan, E. H. Ooi, C. Song

Malaysia School of Engineering

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

32 Citations (Scopus)

Abstract

The scaled boundary finite element method is developed for transient thermoelastic fracture analysis. To enable this, a set of novel shape functions are derived considering thermoelastic equilibrium. The salient features of the proposed framework are: (a) can be formulated on polygons with an arbitrary number of sides leading to flexible mesh generation and (b) facilitates an accurate and direct evaluation of the stress intensity factors from their definition without resorting to any post-processing techniques using relatively coarse meshes. Several numerical benchmark problems demonstrate the aforementioned features of the technique.

Original language	English
Article number	107300
Number of pages	32
Journal	Engineering Fracture Mechanics
Volume	240
DOIs	https://doi.org/10.1016/j.engfracmech.2020.107300
Publication status	Published - Dec 2020

Keywords

Coupled thermoelasticity
Fracture
Scaled boundary finite element method
Stress intensity factors
Thermal stress

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10.1016/j.engfracmech.2020.107300

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title = "A polygon scaled boundary finite element formulation for transient coupled thermoelastic fracture problems",

abstract = "The scaled boundary finite element method is developed for transient thermoelastic fracture analysis. To enable this, a set of novel shape functions are derived considering thermoelastic equilibrium. The salient features of the proposed framework are: (a) can be formulated on polygons with an arbitrary number of sides leading to flexible mesh generation and (b) facilitates an accurate and direct evaluation of the stress intensity factors from their definition without resorting to any post-processing techniques using relatively coarse meshes. Several numerical benchmark problems demonstrate the aforementioned features of the technique.",

keywords = "Coupled thermoelasticity, Fracture, Scaled boundary finite element method, Stress intensity factors, Thermal stress",

author = "Ooi, \{E. T.\} and Iqbal, \{M. D.\} and C. Birk and S. Natarajan and Ooi, \{E. H.\} and C. Song",

note = "Funding Information: The research reported herein was partially performed within the scope of the Australia-Germany Joint Research Cooperation and DAAD-PPP (Australia) Schemes. The financial support of Universities Australia and the German Federal Ministry of Education and Research represented by the German Academic Exchange Service are gratefully acknowledged. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = dec,

doi = "10.1016/j.engfracmech.2020.107300",

language = "English",

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journal = "Engineering Fracture Mechanics",

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AU - Ooi, E. T.

AU - Iqbal, M. D.

AU - Birk, C.

AU - Natarajan, S.

AU - Ooi, E. H.

AU - Song, C.

N1 - Funding Information: The research reported herein was partially performed within the scope of the Australia-Germany Joint Research Cooperation and DAAD-PPP (Australia) Schemes. The financial support of Universities Australia and the German Federal Ministry of Education and Research represented by the German Academic Exchange Service are gratefully acknowledged. Publisher Copyright: © 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/12

Y1 - 2020/12

N2 - The scaled boundary finite element method is developed for transient thermoelastic fracture analysis. To enable this, a set of novel shape functions are derived considering thermoelastic equilibrium. The salient features of the proposed framework are: (a) can be formulated on polygons with an arbitrary number of sides leading to flexible mesh generation and (b) facilitates an accurate and direct evaluation of the stress intensity factors from their definition without resorting to any post-processing techniques using relatively coarse meshes. Several numerical benchmark problems demonstrate the aforementioned features of the technique.

AB - The scaled boundary finite element method is developed for transient thermoelastic fracture analysis. To enable this, a set of novel shape functions are derived considering thermoelastic equilibrium. The salient features of the proposed framework are: (a) can be formulated on polygons with an arbitrary number of sides leading to flexible mesh generation and (b) facilitates an accurate and direct evaluation of the stress intensity factors from their definition without resorting to any post-processing techniques using relatively coarse meshes. Several numerical benchmark problems demonstrate the aforementioned features of the technique.

KW - Coupled thermoelasticity

KW - Fracture

KW - Scaled boundary finite element method

KW - Stress intensity factors

KW - Thermal stress

UR - https://www.scopus.com/pages/publications/85092909028

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DO - 10.1016/j.engfracmech.2020.107300

M3 - Article

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VL - 240

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

M1 - 107300

ER -

A polygon scaled boundary finite element formulation for transient coupled thermoelastic fracture problems

Abstract

Keywords

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