Fatigue strength modelling of high-performing welded joints

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Fatigue strength modelling of high-performing welded joints. / Remes, Heikki; Gallo, Pasquale; Jelovica, Jasmin; Romanoff, Jani; Lehto, Pauli.

In: INTERNATIONAL JOURNAL OF FATIGUE, Vol. 135, 105555, 06.2020.

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@article{49365c48648748fa889b7d5dd22795ae,
title = "Fatigue strength modelling of high-performing welded joints",
abstract = "This paper investigates the fatigue strength modelling of high-performing welded steel joints. The work considers the strain-based, notch stress, averaged strain energy density approaches, and linear elastic fracture mechanics. A comparison of the methods with experimental data shows that the predictions vary significantly for different modelling assumptions. Only the microstructure-sensitive strain-based approach can predict the fatigue life of various weld geometries and plate thicknesses. The explicit modelling of the localised plasticity using the microstructure-dependent representative volume element is required for accurate prediction of the short crack initiation and growth periods, which dominate the fatigue life modelling of high-performing welds.",
keywords = "Fatigue strength, Welded joint, Strain-based approach, Notch stress approach, Strain energy density",
author = "Heikki Remes and Pasquale Gallo and Jasmin Jelovica and Jani Romanoff and Pauli Lehto",
year = "2020",
month = "6",
doi = "10.1016/j.ijfatigue.2020.105555",
language = "English",
volume = "135",
journal = "INTERNATIONAL JOURNAL OF FATIGUE",
issn = "0142-1123",

}

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TY - JOUR

T1 - Fatigue strength modelling of high-performing welded joints

AU - Remes, Heikki

AU - Gallo, Pasquale

AU - Jelovica, Jasmin

AU - Romanoff, Jani

AU - Lehto, Pauli

PY - 2020/6

Y1 - 2020/6

N2 - This paper investigates the fatigue strength modelling of high-performing welded steel joints. The work considers the strain-based, notch stress, averaged strain energy density approaches, and linear elastic fracture mechanics. A comparison of the methods with experimental data shows that the predictions vary significantly for different modelling assumptions. Only the microstructure-sensitive strain-based approach can predict the fatigue life of various weld geometries and plate thicknesses. The explicit modelling of the localised plasticity using the microstructure-dependent representative volume element is required for accurate prediction of the short crack initiation and growth periods, which dominate the fatigue life modelling of high-performing welds.

AB - This paper investigates the fatigue strength modelling of high-performing welded steel joints. The work considers the strain-based, notch stress, averaged strain energy density approaches, and linear elastic fracture mechanics. A comparison of the methods with experimental data shows that the predictions vary significantly for different modelling assumptions. Only the microstructure-sensitive strain-based approach can predict the fatigue life of various weld geometries and plate thicknesses. The explicit modelling of the localised plasticity using the microstructure-dependent representative volume element is required for accurate prediction of the short crack initiation and growth periods, which dominate the fatigue life modelling of high-performing welds.

KW - Fatigue strength

KW - Welded joint

KW - Strain-based approach

KW - Notch stress approach

KW - Strain energy density

UR - http://www.scopus.com/inward/record.url?scp=85079885798&partnerID=8YFLogx

U2 - 10.1016/j.ijfatigue.2020.105555

DO - 10.1016/j.ijfatigue.2020.105555

M3 - Article

VL - 135

JO - INTERNATIONAL JOURNAL OF FATIGUE

JF - INTERNATIONAL JOURNAL OF FATIGUE

SN - 0142-1123

M1 - 105555

ER -

ID: 41268444