A profile design method to improve the wear performance of misaligned water‐lubricated bearing

Abstract

The study presents a profile design method to improve the wear performance of misaligned water‐lubricated bearing based on the modified Archard model. This method takes into account the variation of the film thickness under the mixed elastohydrodynamic lubrication (mixed‐EHL). A transient hydrodynamic Reynolds equation model with the Patir–Cheng flow factors is used to predict the evolution of the mixed‐EHL performance over time. The Archard model is extended to predict the time‐varying wear based on the fatigue concept. To verify the effectiveness of the proposed profile design method; the simulation results, including the transient contact pressure, wear depth and wear volume, between the considering and not considering the profile design are compared. To gain insight, several illustrative examples are presented to show the amelioration of the profile design. Parametric studies are reported to show the applicability of the profile design and emphasise the profile height selection. Therefore, the profile design is an extraordinary method to reduce the edge wear.

Analysis of Water-Lubricated Journal Bearings Assisted by a Small Quantity of Secondary Lubricating Medium with Navier–Stokes Equation and VOF Model

“…Various fixed structures with grooves have been developed for this purpose. The key aspect of structural design lies in the groove and lubrication analysis of the bearing bushings, including the effect of journal misalignment on lubrication properties [4][5][6], the calculation of static and dynamic characteristics of water-lubricated bearings [7][8][9] and the influence of groove number and size on the stability of water-lubricated bearings [10][11][12]. Among these designs, the design of the bushing structure has always been controversial.…”

Study on the influence of journal form and position errors on the lubrication performance of four‐recess capillary restrictor hybrid journal bearing

“…Guo et al 14 derived the perturbation Reynolds equation for hydrodynamic journal bearings considering surface ripple based on perturbation theory, concluded that when the surface waviness was considered, the instability of bearing was faster. Wang et al 15 used a profile design method to improve the wear performance of misaligned water lubricated bearing.…”

The influence of local wear and contact roughness on mixed lubrication of marine stern bearing with misaligned shaft

“…Muzakkir et al 5 studied the expression of the liquid film pressure and film thickness of the inclined shaft by establishing the model of the inclined finite length journal bearing. Wang et al 6 proposed an improved contour design method of Archard model to improve the performance of angular water‐lubricated bearings. Wang et al 7 studied the effects of squeezing and interface sliding of water lubricated tilting pad thrust bearings during startup and shutdown.…”