On a simplified method for wear simulation in rolling contact problems

The objective of the current research is to develop a simplified method for rolling contact problem to simulate wear which occurs in the tracks of bearing on cams. This method can be considered as a tool mediction for technological comnonent life time. It can be applied for numerous industrial applications, in particularly for the case of rollers bearing on cams in the blowing machinely. In this study, we focus on the case of a steady-state rolling contact between quasiidentical solids.

When wear phenomenon occurs, solids curvatures are no more constant and bodies in contact may become conforming. A semi Hefirian method based on geometric indentation of bodies in contact was proved to be reliable for such situations. In this paper, we present a semi Hemian approach with diffusion called “SHAD” based on the diffuse element method to solve contact normal problems for general cases of bodies in contact. Its results show a good ageement with the exact method ones.

Kalker’s simplified theory (Fastsim) is then included to solve the tangential problem by finding traction disgbution and slidin-e velocities in the contact area. Eventually, we make use of the well- known Archard’s law to simulate wear taking into account the changes in cam profile during rolling cycles.

This work highlights the necessity to use a fast simplified model for wear simulation mainly when it deals of numerous calculations to describe random evolution of uncertain parameters like friction ratio, geometrical defects, creepages, etc.