PSI - Issue 41

Irina Goryacheva et al. / Procedia Structural Integrity 41 (2022) 220–231 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 5. Accumulated damage and wear kinetics in sliding contact with sliding fri ction coefficient μ = 0.2 for different values of strength parameter m

The analysis of the results shows that in sliding contact at the sliding friction coefficient µ = 0.2 and parameter m = 3 after several acts of delamination the surface wear with a constant rate occurs. With the increase of the parameter m periods of surface wear alternate with acts of subsurface fracture (delamination). The duration (number of cycles) of the surface wear before each act of subsurface fraction (delamination) grows with increase of the parameter m. The accumulated damage function and the kinetics of wear in sliding contact at the sliding friction coefficient µ = 0.4 and different values of the parameter m are presented in Fig. 6.

Fig. 6. Accumulated damage and wear kinetics for sliding contact, slid ing friction coefficient μ = 0.4 and different values of strength parameter m

The results indicate that in sliding with the sliding friction coefficient µ = 0.4 surface wear is the dominant wear behavior. The results illustrate that after a certain number of cycles, the wear rate reaches a constant value. The number of cycles up to the regime of steady surface wear increases with the growth of the parameter m , while the rate of surface wear decreases. The results presented in Fig. 7, allow us to compare the wear kinetics for different values of the parameter m and the sliding friction coefficient µ under conditions of sliding friction.