| Abstract: | Elastohydrodynamic analysis is conducted and a numerical solution is presented for the film thickness in grease lubrication in isothermal, fully-flooded rolling line contact with or without slip. By making use of a perturbational method, a modified Reynolds equation is established, which can be used with various constitutive equations if the equivalent viscosity can be expressed as a function of the shear rate. Verification of this analysis is carried out by experimentally determining the minimum film thickness with an X-ray transmission technique, with satisfactory agreement. The effect of temperature on the apparent viscosity of grease is also discussed. |
