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A numerical investigation of the high cycle fatigue sensitivity to microstructure and defect

Article dans une revue avec comité de lecture
Author
LIANG, Xiaoyu
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
ccROBERT, Camille
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
HOR, Anis
110103 Institut Clément Ader [ICA]
ccMOREL, Franck
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

URI
http://hdl.handle.net/10985/22238
DOI
10.1016/j.ijfatigue.2020.105541
Date
2020-02-14
Journal
International Journal of Fatigue

Abstract

This study aims at investigating the effect of defect on the high cycle fatigue behavior of polycrystalline aggregates. An explicit virtual microstructure finite element model is created to conduct fatigue simulations. Different stress-based criteria frequently applied in fatigue assessment are tested with a combination of the non-local methods. Two realizations of the non-local method are used and compared. Simulation results are compared to experimental results of 316L. From the parametric simulations, better qualitative understandings on the choice of non-local method as well as its parameters are obtained. The effect of Kitagawa-Takahashi can be reproduced and explained by this proposed framework of microstructure modeling-simulation.

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