Performance of an Infinitely Long Transversely Rough Hydrodynamic Slider Bearing

Abstract

By now, it is well-known that the standard deviation associated with the roughness plays an important role in the performance of a hydrodynamic slider bearing. Thus, it has been thought appropriate to study and analyze the effect of standard deviation on the performance of an infinitely long transversely rough slider bearing. The concerned Reynolds equation is solved with suitable boundary conditions to get the pressure distribution, in turn, which is used to obtain load carrying capacity. Besides, the friction at the runner plate and the bearings surface has been calculated. The results are presented graphically. It is observed that the effect of standard deviation is significantly adverse. Further, the friction decreases at the bearing surface while there is an almost negligible increase at the runner plate. In addition, it is noticed that the aspect ratio has a significantly positive effect in the sense that the load carrying capacity increases and the friction decreases at the bearing surface and the runner plate with respect to increasing values of the aspect ratio. Also, it has been noted that the ratio of outlet film thickness to the bearing length tends to enhance the performance of the bearing system. This article makes it clear that the adverse effect of standard deviation can be compensated upto considerable extent by choosing a proper combination of the aspect ratio and the ratio of outlet film thickness to the length of the bearing.