Prediction of lubrication regimes of concentrated contacts

Friction experiments are performed on lubricated concentrated contacts (LCCs) to obtain the transitions EHL-ML and ML-BL as a function of the operational conditions under which these contacts operate. A transition diagram is developed to determine the lubrication mode of an LCC as a function of the operational conditions. In this investigation the LCCs operated macroscopically in the lubricants' liquid state regime.