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Fatigue life under non-Gaussian random loading from various models

Banvillet, A. / Lagoda, T. / Macha, E. / Nieslony, A. / Palin-Luc, T. / Vittori, J.F.

Fatigue test results on the 10HNAP steel under constant amplitude and random loading with non-Gaussian probability distribution function, zero mean value and wide-band frequency spectrum have been used to compare the life time estimation of the models proposed by Bannantine, Fatemi-Socie, Socie, Wang-Brown, Morel and Lagoda-Macha. Except the Morel proposal which accumulates damage step by step with a proper methodology, all the other models use a cycle counting method. The rainflow algorithm is used to extract cycles from random histories of damage parameters in time domain. In the last model, where a strain energy density parameter is employed, additionally spectral method is evaluated for fatigue life calculation in the frequency domain. The best and very similar results of fatigue life assessment have been obtained using the models proposed by Socie and by Lagoda-Macha, both in time and frequency domains for the last one.

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Fatigue life under non-Gaussian random loading from various models

Banvillet, A. / Lagoda, T. / Macha, E. / Nieslony, A. / Palin-Luc, T. / Vittori, J.F.

Fatigue test results on the 10HNAP steel under constant amplitude and random loading with non-Gaussian probability distribution function, zero mean value and wide-band frequency spectrum have been used to compare the life time estimation of the models proposed by Bannantine, Fatemi-Socie, Socie, Wang-Brown, Morel and Lagoda-Macha. Except the Morel proposal which accumulates damage step by step with a proper methodology, all the other models use a cycle counting method. The rainflow algorithm is used to extract cycles from random histories of damage parameters in time domain. In the last model, where a strain energy density parameter is employed, additionally spectral method is evaluated for fatigue life calculation in the frequency domain. The best and very similar results of fatigue life assessment have been obtained using the models proposed by Socie and by Lagoda-Macha, both in time and frequency domains for the last one.

Fatigue life under non-Gaussian random loading from various models

Banvillet, A. / Lagoda, T. / Macha, E. / Nieslony, A. / Palin-Luc, T. / Vittori, J.F.

Fatigue test results on the 10HNAP steel under constant amplitude and random loading with non-Gaussian probability distribution function, zero mean value and wide-band frequency spectrum have been used to compare the life time estimation of the models proposed by Bannantine, Fatemi-Socie, Socie, Wang-Brown, Morel and Lagoda-Macha. Except the Morel proposal which accumulates damage step by step with a proper methodology, all the other models use a cycle counting method. The rainflow algorithm is used to extract cycles from random histories of damage parameters in time domain. In the last model, where a strain energy density parameter is employed, additionally spectral method is evaluated for fatigue life calculation in the frequency domain. The best and very similar results of fatigue life assessment have been obtained using the models proposed by Socie and by Lagoda-Macha, both in time and frequency domains for the last one.

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Title:

Fatigue life under non-Gaussian random loading from various models

Contributors:

Banvillet, A. (author) / Lagoda, T. (author) / Macha, E. (author) / Nieslony, A. (author) / Palin-Luc, T. (author) / Vittori, J.F. (author)

Published in:

International Journal of Fatigue ; 26 ; 349-363

Publication date:

2004

Size:

15 Seiten, 22 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.ijfatigue.2003.08.017

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Stahlbau , Verspannung , Duktilität , Elastizitätsmodul , Algorithmus , Poisson-Zahl , Zeitbereichanalyse , Frequenzbereichsanalyse , statistische Verteilung , Vektor , mathematisches Modell , Verformungsenergie , zufällige Belastung , Ermüdungslebensdauer

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