Fatigue crack growth in bearing steel under cyclic mode II + static biaxial compression

Mael Zaid (1, 2, 3) , Vincent Bonnand (3) , Véronique Doquet (1) , Vincent Chiaruttini (3) , Didier Pacou (3) , Pierre Depouhon (2)

1 LMS - Laboratoire de mécanique des solides
2 Airbus Helicopters
3 DMAS, ONERA, Université Paris Saclay [Châtillon]

Mode II fatigue crack growth under reversed shear and static biaxial compression was investigated in two bearing steels. Many aborted branches, quasi-orthogonal to the main crack, were observed along the crack face. The compressive stress parallel to the main crack hindered the growth of these branches and favored coplanar mode II crack growth. The crack face sliding displacement profiles measured by DIC were used to derive ΔKII,eff, at the main crack tip, using elastic-plastic FE simulations with crack face friction, by an inverse method. Frictioncorrected crack growth kinetics were obtained for mode II crack growth in both steels.

Mots clés: Mode II; fatigue crack; bearing steel; branch crack; friction; compression; digital image correlation

Domaines: Mécanique des matériaux [physics.class-ph]

Mael Zaid, Vincent Bonnand, Véronique Doquet, Vincent Chiaruttini, Didier Pacou, et al.. Fatigue crack growth in bearing steel under cyclic mode II + static biaxial compression. International Journal of Fatigue, 2022, 163, pp.107074. ⟨10.1016/j.ijfatigue.2022.107074⟩. ⟨hal-03698189⟩