Equivalent wear study of slipper pair based on the interaction model of oil film lubrication and eccentric wear

Abstract The slipper pair accelerated degradation test has a long cycle time, high cost, lack of mechanism explanation, and cannot illustrate the correspondence of wear rate under different pressures, there is an urgent need for a high-precision equivalent wear research method to provide theoretical support for the design of test. A method for slipper pair equivalent wear study is proposed by coupling the dynam-ic pressure lubrication model of slipper pair with an accurate wear calculation model that considers the local wear characteristics and wear profile of slipper bottom surface. The local characteristics of oil film and change of wear profile are discussed, and the equivalent acceleration coefficients of different pressures are calculated based on 15MPa, and the equivalent wear simulation experiments are carried out for long-time-low-pressure and short-time-high-pressure. The results show that the wear quality at 25MPa and 31.5MPa are comparable to the reference pressure of 15MPa, and the errors are 0.09% and 0.03% respectively, which verifies the feasibility of the equivalent wear research method.