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Generalized Effects in Confined Fluids: New Friction Map for Boundary Lubrication
Polymer Science Faculty Research
  • Ali Dhinojwala
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Recent advances in measuring the rheology and tribology of thin liquid films between shearing surfaces have enabled previously-inaccessible parameters to be measured accurately during frictional sliding. These include the real area of contact, the local asperity load and pressure, and the sheared film thickness. The results show striking non-continuum, non-bulk like effects when the thicknesses of sheared films approach molecular dimensions as occurs under most tribological conditions. Based on these new results, we assess the validity of current presentations of friction processes, such as the Stribeck curve, and propose new constitutive relations and a dynamic friction map, including an alternative Stribeck type curve representation, which are also formulated in terms of more accessible parameters.
Citation Information
Ali Dhinojwala. "Generalized Effects in Confined Fluids: New Friction Map for Boundary Lubrication" Vol. 200 (1996)
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