Modeling contact oxygenation and adhesive wear extension in axisymmetric flat circular fretting interfaces

Soha Baydoun (1) , Pierre Arnaud (2) , Siegfried Fouvry (1)

1 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes
2 MSSMat - Laboratoire de mécanique des sols, structures et matériaux

In this study, adhesive wear extension in axisymmetric fretting contacts is simulated by applying the Contact Oxygenation Concept (COC) which illustrates the influence of fretting loadings on oxygen transport within the interface. Di-oxygen flow is modeled using an Advection-Dispersion-Reaction (ADR) approach which was formerly proposed assuming third body as a porous medium crossed by atmospheric gases. It was shown that ADR model is not only predictive in square contacts but also in circular flat interfaces where it is capable of simulating the partition of adhesion and abrasion for a broad range of contact pressures and sliding frequencies. Moreover, a simplified analytical solution is proposed for ADR equation which is proven to be highly correlated with the numerical and experimental results.

Mots clés: Abrasive-adhesive fretting wear; Axisymmetric-circular flat contact; Contact oxygenation concept; Advection-Dispersion-Reaction model (ADR)

Domaines: Mécanique [physics.med-ph]

Soha Baydoun, Pierre Arnaud, Siegfried Fouvry. Modeling contact oxygenation and adhesive wear extension in axisymmetric flat circular fretting interfaces. Wear, 2021, 477, pp.203822. ⟨10.1016/j.wear.2021.203822⟩. ⟨hal-03453425⟩