Implementation of modified Wheeler model in peridynamic fatigue model to predict effects of overload and underload on fatigue crack growth rate

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Tien Nguyen, Cong and Oterkus, Selda and Oterkus, Erkan (2021) Implementation of modified Wheeler model in peridynamic fatigue model to predict effects of overload and underload on fatigue crack growth rate. Theoretical and Applied Fracture Mechanics, 116. 103115. ISSN 0167-8442 (https://doi.org/10.1016/j.tafmec.2021.103115)

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Abstract

This study presents a novel peridynamic model for the prediction of fatigue crack growth rate with the effects of overload and underload. The modified Wheeler models for underload, overload and overload-underload combinations are applied to peridynamic fatigue equations. The capability of the proposed peridynamic fatigue model is demonstrated by considering fatigue crack growth on a single edge-notch plate subjected to constant amplitude loadings with overloads, underloads, and overload/underload combinations. The accuracy of the proposed peridynamic fatigue model is verified by comparing the predicted fatigue crack growth with experimental results.

ORCID iDs

Tien Nguyen, Cong, Oterkus, Selda ORCID logoORCID: https://orcid.org/0000-0003-0474-0279 and Oterkus, Erkan ORCID logoORCID: https://orcid.org/0000-0002-4614-7214;
CORE (COnnecting REpositories)