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Abstract
Recent numerical work has suggested that the elastohydrodynamic film thickness present in smooth-surface, high-pressure, lubricated contacts at low speed parameter conditions may be much thinner than previously predicted, effectively collapsing at very low values of speed parameter. To test this suggestion, central elastohydrodynamic film thickness measurements have been made on three base fluids over a wide range of speed and contact pressure conditions in point contact. None of the fluids tested has shown any evidence of film collapse at low speeds even at high pressure. Instead, the observed behavior has been found to conform closely to the Hamrock-Dowson classical regression equation.
