Computation of Mixed Mode Stress Intensity Factors in 3D Functionally Graded Material Using Tetrahedral Finite Element

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

In this paper, a formulation of interaction integral method for the calculation of Stress Intensity Factor (SIF) for three-dimensional cracks in functionally graded material (FGM) is discussed. The SIF evaluations were carried out using somewhat rough FEM model around the crack front while maintaining the path independent property of the interaction integral. The proposed method was examined on both homogeneous material and FGM, for the accuracies of evaluated SIFs under mode I and mixed mode loadings. The results indicate that the present interaction integral method maintain its path independent property.

Original languageEnglish
Title of host publicationMechanisms and Machine Science
PublisherSpringer
Pages83-90
Number of pages8
DOIs
Publication statusPublished - 1 Jan 2020

Publication series

NameMechanisms and Machine Science
Volume75
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Fingerprint

Functionally graded materials
Stress intensity factors
Cracks
Finite element method

Keywords

  • Domain integral method
  • Finite element method
  • Fracture mechanics
  • Interaction integral method
  • Stress intensity factor

Cite this

Tabaza, Omar ; Okada, Hiroshi ; Yusa, Yasunori. / Computation of Mixed Mode Stress Intensity Factors in 3D Functionally Graded Material Using Tetrahedral Finite Element. Mechanisms and Machine Science. Springer, 2020. pp. 83-90 (Mechanisms and Machine Science).
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Computation of Mixed Mode Stress Intensity Factors in 3D Functionally Graded Material Using Tetrahedral Finite Element. / Tabaza, Omar; Okada, Hiroshi; Yusa, Yasunori.

Mechanisms and Machine Science. Springer, 2020. p. 83-90 (Mechanisms and Machine Science; Vol. 75).

Research output: Chapter in Book/Report/Conference proceedingChapter

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T1 - Computation of Mixed Mode Stress Intensity Factors in 3D Functionally Graded Material Using Tetrahedral Finite Element

AU - Tabaza, Omar

AU - Okada, Hiroshi

AU - Yusa, Yasunori

PY - 2020/1/1

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N2 - In this paper, a formulation of interaction integral method for the calculation of Stress Intensity Factor (SIF) for three-dimensional cracks in functionally graded material (FGM) is discussed. The SIF evaluations were carried out using somewhat rough FEM model around the crack front while maintaining the path independent property of the interaction integral. The proposed method was examined on both homogeneous material and FGM, for the accuracies of evaluated SIFs under mode I and mixed mode loadings. The results indicate that the present interaction integral method maintain its path independent property.

AB - In this paper, a formulation of interaction integral method for the calculation of Stress Intensity Factor (SIF) for three-dimensional cracks in functionally graded material (FGM) is discussed. The SIF evaluations were carried out using somewhat rough FEM model around the crack front while maintaining the path independent property of the interaction integral. The proposed method was examined on both homogeneous material and FGM, for the accuracies of evaluated SIFs under mode I and mixed mode loadings. The results indicate that the present interaction integral method maintain its path independent property.

KW - Domain integral method

KW - Finite element method

KW - Fracture mechanics

KW - Interaction integral method

KW - Stress intensity factor

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