Core Variation in an Externally Pressurized Converging Thrust Bearing with Bingham Lubricant

Abstract

The effects of angle of convergence on the shape and thickness of the core are analyzed theoretically by considering variable film thickness in an externally pressurized circular thrust bearing. Using the assumptions of the lubrication theory, modified Reynold’s equation and the governing equations are obtained. Using the boundary conditions of the problem in the constitutive equations we get the velocity of the core region as well as flow region. By considering the equilibrium of an element in the yield surface, an algebraic equation to determine the thickness of the yield surface is derived. Numerical solutions are obtained for the thickness of yield surface and velocities for various values of Bingham Numbers and the angle of convergence.

Inertia Effects in Rheodynamic Lubrication of an Externally Pressurized Converging Thrust Bearing using Bingham Fluids

“…Where Q is the flow rate per unit width Using velocity distributions in (17) Elimination of pressure gradient from (19) and (20) Eliminating the pressure gradient from Eqs. (19) and (20) The value of δ * has been determined for different values of B and for various values of r*, by iterative technique and reported elsewhere (Jayakaran and Alexander, 2016). The pressure distribution can be obtained by substituting (28)…”

“…al., 1993). Using the idea of convergence and axisymmetric in an externally pressurized converging thrust bearing the core and velovity is analyzed by (Jayakaran and Alexander, 2016).…”

Rheodynamic Lubrication of an Externally Pressurized Converging Circular Thrust Bearing using Bingham Lubricant

“…The core thickness δ(r * ) is obtained by solving eq. (21) for different values of θ and B by using Newton Raphson Method and reported elsewhere [1].…”

“…Vishwanath et al [12] have analyzed the problem of a squeeze film bearing with converging and diverging squeeze films. Further, Jayakaran Amalraj et al [1] worked on the effects of the angle of convergence on the thickness of the core in a converging externally pressurized thrust bearing theoretically. Although a lot of study has been done on externally pressurized thrust bearings with uniform film thickness, only little work has been done with variable film thickness.…”