Abstract

The effect of texture on tribological properties of journal bearings operating under starvation lubrication conditions is studied in this paper. The P-θ model with mass conservation boundary conditions is used to accurately predict the oil film distribution in the full oil film/starvation region of the textured bearing. The effects of various degrees of starvation lubrication on the tribological performance parameters, such as eccentricity, attitude angle, full film area, and friction coefficient, are discussed in textured bearings. The results show that the effect of texture on the bearing performance is affected by starvation lubrication conditions: (1) The effect severity varied with starvation levels; (2) The texturing still improved the operating performance of the journal bearing in the case of weak starvation; (3) Texturing increased the bearing load carrying capacity and reduced the friction coefficient, improving safety and preventing safety accidents due to oil supply problems.

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