Numerical Analysis of Geometrical Parameters Effect on Contact Zone Under Fretting Fatigue Loading

Abstract The fatigue process under fretting conditions is characterized by small oscillatory movements due to vibrating or cyclic loads between two surfaces in contact. Two phenomena can arise as a consequence: the surface wear of bodies contact, giving rise so-called wear. second phenomenon concerns crack nucleation contact region, causing reduction strength component subjected loading. This called “fretting fatigue”. In present study, finite element models (2D-FEM) are provided demonstrate effect pad radius on parameters such as: pressure, shear traction, stresses, sliding, size line and its location along aeronautical Al2024 alloy Six numerical utilized describe changing radii stresses damage nucleation. Ruiz parameter criterion should be used predict initiation zone. Comparison results shows that there good agreement modeling predictions with those analytical results. stress field, relative slip, loading were highlighted. substantially affects distribution parameters. Particular attention must taken into consideration this variable when analyzing structure fatigue.