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Enhanced multiaxial fatigue criterion that considers stress gradient effects

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Enhanced multiaxial fatigue criterion that considers stress gradient effects. / Ottosen, Niels Saabye; Ristinmaa, Matti; Kouhia, Reijo.

In: International Journal of Fatigue, Vol. 116, 01.11.2018, p. 128-139.

Research output: Contribution to journalArticleScientificpeer-review

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Ottosen, NS, Ristinmaa, M & Kouhia, R 2018, 'Enhanced multiaxial fatigue criterion that considers stress gradient effects', International Journal of Fatigue, vol. 116, pp. 128-139. https://doi.org/10.1016/j.ijfatigue.2018.05.024

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Ottosen, Niels Saabye ; Ristinmaa, Matti ; Kouhia, Reijo. / Enhanced multiaxial fatigue criterion that considers stress gradient effects. In: International Journal of Fatigue. 2018 ; Vol. 116. pp. 128-139.

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@article{50bb6e121ad84df082c5d932a344f881,
title = "Enhanced multiaxial fatigue criterion that considers stress gradient effects",
abstract = "Modification of a fatigue criterion valid for homogeneous multiaxial stress states to account for the beneficial effect of stress gradients is traditionally performed by modifying the stress terms in the fatigue criterion and thereby introducing new parameters that need to be calibrated. Here the stress terms are left unchanged and, instead, the parameters in the fatigue criterion are modified. This modification is performed, in principle, along the lines of Siebel and Stieler and it introduces Neuber's parameter as the only new parameter; however, as soon as the ultimate strength of the material is known, also Neuber's parameter is known. Therefore, the methodology introduced implies that no new calibration process is needed. Here a specific fatigue criterion valid for homogeneous multiaxial stress states is enhanced by this procedure and predictions of this simple approach are compared with a broad range of experimental data and good accuracy is achieved. Moreover, the approach adopted can be applied to other fatigue criteria than the one considered here.",
keywords = "Fatigue, Gradient effects, Multiaxial fatigue",
author = "Ottosen, {Niels Saabye} and Matti Ristinmaa and Reijo Kouhia",
year = "2018",
month = "11",
day = "1",
doi = "10.1016/j.ijfatigue.2018.05.024",
language = "English",
volume = "116",
pages = "128--139",
journal = "International Journal of Fatigue",
issn = "0142-1123",
publisher = "Elsevier",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Enhanced multiaxial fatigue criterion that considers stress gradient effects

AU - Ottosen, Niels Saabye

AU - Ristinmaa, Matti

AU - Kouhia, Reijo

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Modification of a fatigue criterion valid for homogeneous multiaxial stress states to account for the beneficial effect of stress gradients is traditionally performed by modifying the stress terms in the fatigue criterion and thereby introducing new parameters that need to be calibrated. Here the stress terms are left unchanged and, instead, the parameters in the fatigue criterion are modified. This modification is performed, in principle, along the lines of Siebel and Stieler and it introduces Neuber's parameter as the only new parameter; however, as soon as the ultimate strength of the material is known, also Neuber's parameter is known. Therefore, the methodology introduced implies that no new calibration process is needed. Here a specific fatigue criterion valid for homogeneous multiaxial stress states is enhanced by this procedure and predictions of this simple approach are compared with a broad range of experimental data and good accuracy is achieved. Moreover, the approach adopted can be applied to other fatigue criteria than the one considered here.

AB - Modification of a fatigue criterion valid for homogeneous multiaxial stress states to account for the beneficial effect of stress gradients is traditionally performed by modifying the stress terms in the fatigue criterion and thereby introducing new parameters that need to be calibrated. Here the stress terms are left unchanged and, instead, the parameters in the fatigue criterion are modified. This modification is performed, in principle, along the lines of Siebel and Stieler and it introduces Neuber's parameter as the only new parameter; however, as soon as the ultimate strength of the material is known, also Neuber's parameter is known. Therefore, the methodology introduced implies that no new calibration process is needed. Here a specific fatigue criterion valid for homogeneous multiaxial stress states is enhanced by this procedure and predictions of this simple approach are compared with a broad range of experimental data and good accuracy is achieved. Moreover, the approach adopted can be applied to other fatigue criteria than the one considered here.

KW - Fatigue

KW - Gradient effects

KW - Multiaxial fatigue

U2 - 10.1016/j.ijfatigue.2018.05.024

DO - 10.1016/j.ijfatigue.2018.05.024

M3 - Article

VL - 116

SP - 128

EP - 139

JO - International Journal of Fatigue

JF - International Journal of Fatigue

SN - 0142-1123

ER -