Inertia Effects in a Multilobe Conical Bearing Lubricated with a Couple Stress Fluid

Abstract

In this paper, a multilobe conical bearing is analyzed. A lubricant modelled by a couple stress fluid flows in the bearing clearance. The Galerkin method is used to determine the mechanical parameters of multilobe journal bearings. An example of a two-lobe conical bearing is discussed in detail. The inertia of the flowing lubricant is taken into account in the analysis. It has been found that the increase of the couple stress generates an increase the pressure in the clearance.

Restrictor-based studies of hybrid hole-entry conical journal bearings

“…Walicka et al (2019) observed that fluid film thickness is reduced when couple stress is increased. Further, Walicka et al (2019) noted that the pressure is also increased, as the lobe taper is increased. Comprehensive survey on aforementioned published articles did not discuss about comparative study of the three restrictors/ compensators in hole-entry conical journal bearing in hybrid manner either experimentally or analytically.…”

“…Walicka et al (2019) observed that fluid film thickness is reduced when couple stress is increased. Further, Walicka et al (2019) noted that the pressure is also increased, as the lobe taper is increased.…”

“…Further, Pawar and Phalle (2018) extended their work on hole entry hybrid conical journal bearing under wear effect, and it is observed that stiffness, damping and fluid film thickness are decreased and finally concluded that the wear effect is necessary to consider in design process. Researchers have now moved a step ahead and started modelling a conical lobe bearing; very recently, Walicka et al (2019) have studied multi-lobe (two lobe) conical bearing using couple stress inertia effect. Walicka et al (2019) observed that fluid film thickness is reduced when couple stress is increased.…”

“…Researchers have now moved a step ahead and started modelling a conical lobe bearing; very recently, Walicka et al (2019) have studied multi-lobe (two lobe) conical bearing using couple stress inertia effect. Walicka et al (2019) observed that fluid film thickness is reduced when couple stress is increased. Further, Walicka et al (2019) noted that the pressure is also increased, as the lobe taper is increased.…”

Modelling of Work of the Rotor-Type Blade Pump with Revolving Stator

“…Walicka et al [16] considered the influence of the effects of complete inertia in the support bearing. Walicka et al [17,18] analysed the multi-lobed tapered bearing and determined its parameters based on Galerkin's method with an analysis of the power characteristics of the bearing. However, in this case, the mass and inertial components of the pump blade are not taken into account.…”