Abstract:

The mixed lubrication of line contacts is simulated with a partial elastohydrodynamic model. With a floating grid method, the location and magnitude of pressure spikes are calculated in detail, and the minimum film thickness and central film thickness are also calculated. Equations of the oil film thickness and pressure spike are proposed for the cases of elastohydrodynamic lubrication of rough rollers. The floating grid method is illustrated and explained with 6 splitting methods: adding, subtracting, timing, dividing, powering and algorithm methods. The mathematical model of the theoretical analysis is based on the average flow model presented by Patir and Cheng.

Key words: floating gr id method, film t hickness formulae, pr essur e spike formulae