Bearing creep simulation considering a local change in coefficient of friction

Loc Le Duc

Summary

In the context of dynamically loaded contacting component, micro-sliding movements have been observed to result in alterations to tribological system variables such as the coefficient of friction (COF) or the contact pressure distribution as a result of wear. In technical application, irreversible relative movements between bearing rings and connecting components can occur in bearing seats, a phenomenon referred to as rolling bearing creep. It has been demonstrated that the phenomenon of bearing creep gives rise to the presence of wear particles and surface damage, consequently inducing the aforementioned alterations in the COF of the surfaces in contact.

The paper introduces a bearing creep simulation, in which the COF changes due to the creep movement. The alteration of COF is empirically measured in model tests and incorporated into the simulation. This facilitates local mapping of the coefficient of friction within the bearing seat, thereby enabling the simulation of a localized change in coefficient of friction due to creep movement. This approach facilitates a more precise depiction of the bearing creep phenomenon.