An iterative technique to assess the fatigue strength of notched components

J. A. Balbín; V. Chaves; N. O. Larrosa; A. Navarro

doi:10.1016/j.prostr.2020.11.098

An iterative technique to assess the fatigue strength of notched components

J. A. Balbín^*
, V. Chaves
, N. O. Larrosa
, A. Navarro

^*Corresponding author for this work

University of Bristol

Research output: Contribution to journal › Conference article › peer-review

Abstract

The present work provides an efficient formulation to assess the growth of short fatigue cracks in metallic components. The proposed technique consists on the iterative combination of a micromechanical short-crack growth model and the Finite Elements Method. The interaction of the crack with the microstructure of the material is evaluated through the dislocations distribution technique. The finite elements analysis of the problem is needed to obtain the stress gradient ahead of the notch. The division of the main problem into simpler scenarios makes the resolution of the method easier since cases with known solutions are required exclusively. The iterative method formulation is properly described and application examples are given in order to show its usefulness.

Original language	English
Pages (from-to)	1167-1175
Number of pages	9
Journal	Procedia Structural Integrity
Volume	28
DOIs	https://doi.org/10.1016/j.prostr.2020.11.098
Publication status	Published - 2020
Externally published	Yes
Event	1st Virtual European Conference on Fracture, VECF 2020 - Virtual, Online Duration: 29 Jun 2020 → 1 Jul 2020

Keywords

Crack
Dislocations
Fatigue
Finite elements
Notch

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10.1016/j.prostr.2020.11.098

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@article{1329f52b04d64b26b486f7f2089069ce,

title = "An iterative technique to assess the fatigue strength of notched components",

abstract = "The present work provides an efficient formulation to assess the growth of short fatigue cracks in metallic components. The proposed technique consists on the iterative combination of a micromechanical short-crack growth model and the Finite Elements Method. The interaction of the crack with the microstructure of the material is evaluated through the dislocations distribution technique. The finite elements analysis of the problem is needed to obtain the stress gradient ahead of the notch. The division of the main problem into simpler scenarios makes the resolution of the method easier since cases with known solutions are required exclusively. The iterative method formulation is properly described and application examples are given in order to show its usefulness.",

keywords = "Crack, Dislocations, Fatigue, Finite elements, Notch",

author = "Balb{\'i}n, \{J. A.\} and V. Chaves and Larrosa, \{N. O.\} and A. Navarro",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0); 1st Virtual European Conference on Fracture, VECF 2020 ; Conference date: 29-06-2020 Through 01-07-2020",

year = "2020",

doi = "10.1016/j.prostr.2020.11.098",

language = "English",

volume = "28",

pages = "1167--1175",

journal = "Procedia Structural Integrity",

issn = "2452-3216",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - An iterative technique to assess the fatigue strength of notched components

AU - Balbín, J. A.

AU - Chaves, V.

AU - Larrosa, N. O.

AU - Navarro, A.

PY - 2020

Y1 - 2020

N2 - The present work provides an efficient formulation to assess the growth of short fatigue cracks in metallic components. The proposed technique consists on the iterative combination of a micromechanical short-crack growth model and the Finite Elements Method. The interaction of the crack with the microstructure of the material is evaluated through the dislocations distribution technique. The finite elements analysis of the problem is needed to obtain the stress gradient ahead of the notch. The division of the main problem into simpler scenarios makes the resolution of the method easier since cases with known solutions are required exclusively. The iterative method formulation is properly described and application examples are given in order to show its usefulness.

AB - The present work provides an efficient formulation to assess the growth of short fatigue cracks in metallic components. The proposed technique consists on the iterative combination of a micromechanical short-crack growth model and the Finite Elements Method. The interaction of the crack with the microstructure of the material is evaluated through the dislocations distribution technique. The finite elements analysis of the problem is needed to obtain the stress gradient ahead of the notch. The division of the main problem into simpler scenarios makes the resolution of the method easier since cases with known solutions are required exclusively. The iterative method formulation is properly described and application examples are given in order to show its usefulness.

KW - Crack

KW - Dislocations

KW - Fatigue

KW - Finite elements

KW - Notch

UR - https://www.scopus.com/pages/publications/85099818007

U2 - 10.1016/j.prostr.2020.11.098

DO - 10.1016/j.prostr.2020.11.098

M3 - Conference article

AN - SCOPUS:85099818007

SN - 2452-3216

VL - 28

SP - 1167

EP - 1175

JO - Procedia Structural Integrity

JF - Procedia Structural Integrity

T2 - 1st Virtual European Conference on Fracture, VECF 2020

Y2 - 29 June 2020 through 1 July 2020

ER -

An iterative technique to assess the fatigue strength of notched components

Abstract

Keywords

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