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Article Dans Une Revue Tribology International Année : 2020

Modeling the fretting fatigue endurance from partial to gross slip: the effect of debris layer

Résumé

Fretting Fatigue (FF) appears as a key damaging process in many industrial assemblies subjected to vibrations. In this study, the "U-shape" experimental fretting fatigue endurance evolution of a 35NiCrMo16 steel cylinder/plane contact versus the applied displacement amplitudes is compared versus a complete finite element modeling. This latter takes into account the crack nucleation process, the crack propagation phenomena but also the surface wear as well as the evolution of the "third body" debris layer entrapped within the interface. This dynamical simulation of the fretting fatigue endurance from partial to gross slip condition confirms that surface wear effects can be neglected under partial slip (PS) but must be taken into account including the debris layer effect, in order to predict the fretting fatigue endurance under gross slip (GS) conditions. Using this (PS-NoWear/GS-Wear&ThirdBody) numerical framework, calibrated from a restricted set of plain fatigue experiments, an original "DSN" fretting fatigue chart strategy allowing a global description of the fretting fatigue damages (wear, crack nucleation and failure) as a function of Displacement amplitude, fatigue Stress and N loading cycles is introduced and discussed.
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Dates et versions

hal-03093085 , version 1 (03-01-2021)

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P. Arnaud, S. Fouvry. Modeling the fretting fatigue endurance from partial to gross slip: the effect of debris layer. Tribology International, 2020, 143, pp.106069. ⟨10.1016/j.triboint.2019.106069⟩. ⟨hal-03093085⟩
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