Three-Dimensional Numerical Analysis of Shrink-Fitted Shafts Under Rotating Bending Fretting Fatigue Condition

Abstract

The cantilever rotating bending fretting fatigue (RBFF) damage of GH4169 was investigated in this work. With the help of ABAQUS and FRANC3D, the stress distribution and the contact status in the fretting zone were studied for the different fatigue loads. Furthermore, the critical plane shear stress amplitude model, Smith-Watson—Topper (SWT) model and Ruiz-Chen model were implemented and compared for fretting crack nucleation locations. The results showed that with the increase of the fatigue loads, the contact pressures decreased and the contact area reduced at the tension side. The stick zone, slip zone and open zone were formed due to fretting contact. At the compression side, the percent of slip zone area reached 4, 15 and 60% along the top surface axis of the shaft with the fatigue load of 500, 600 and 700 MPa. However, the slip zone area reduced with larger fatigue load and were almost the same for the three fatigue loads at the tension side. Moreover, the stress distribution results showed that the negative impact of fretting were weakened with the fatigue load increasing. Finally, the critical plane shear stress amplitude model and SWT model were determined to be more accurate in crack location prediction than the Ruiz-Chen model.