Development of a simulation assisted experimental ring-on-liner scuffing test methodology

This paper investigates a simulation-assisted experimental test method for analysing the damage mechanisms of
scuffing in the piston ring-cylinder liner contact. The tests were carried out to recreate the operating conditions
at the top dead centre of an internal combustion engine. Three different piston rings were tested under different
load conditions. A simulation model was used to analyse the complex contact situation of the system in detail.
The simulation model can be used to analyse the hydrodynamic pressure and the asperity contact pressure.
Geometrically corrected scuffing limits can be determined therefrom. The results show that while the experi-
mental results are indistinguishable, significant differences exist in the geometrically corrected scuffing limits
and thus in the scuffing performance of the rings