Determination of a large tilting pad thrust bearing angular stiffness

Srikanth, D.V.; Chaturvedi, K. K.; Reddy, A. Chenna Kesava

doi:10.1016/j.triboint.2011.10.017

Cited by 19 publications

(20 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Once the pressure distribution is determined, the load capacity can be calculated [ 12 ]. In nondimensional form, the load capacity is given by ( 6 )

…”

Section: Load Carrying Capacity (Lcc)mentioning

confidence: 99%

“…As per study of [ 10 , 11 ] that as compared with conventional taper fluid film shape, new surface profile (cycloidal, catenoidal, exponential, polynomial) are found to offer a significant increase in the load-carrying capacity as well as a considerable reduction in the coefficient of friction. In recent works as well, researchers have not presented the effect of grid size on the solution of Reynolds equation, for example, the work presented by [ 12 ] is cited as one of such cases, in which it is directly presented a 9 × 9 grid and has not shown effect of coarsening or refining mesh on the pressure profile. It has been studied theoretically and experimentally the effects of surface waviness over the load carrying capacity of finite slider bearing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Investigation of Pressure Profile in Hydrodynamic Lubrication Thrust Bearing

Najar

Harmain

2014

International Scholarly Research Notices

View full text Add to dashboard Cite

Reynolds equation is solved using finite difference method (FDM) on the surface of the tilting pad to find the pressure distribution in the lubricant oil film. Different pressure profiles with grid independence are described. The present work evaluates pressure at various locations after performing a thorough grid refinement. In recent similar works, this aspect has not been addressed. However, present study shows that it can have significant effect on the pressure profile. Results of a sector shaped pad are presented and it is shown that the maximum average value of pressure is 12% (approximately) greater than the previous results. Grid independence occurs after 24 × 24 grids. A parameter “ψ” has been proposed to provide convenient indicator of obtaining grid independent results. ψ = |(P refinedgrid − P Refrence-grid)/P refinedgrid|, ψ ≤ ε, where “ε” can be fixed to a convenient value and a constant minimum film thickness value of 75 μm is used in present study. This important parameter is highlighted in the present work; the location of the peak pressure zone in terms of (r, θ) coordinates is getting shifted by changing the grid size which will help the designer and experimentalist to conveniently determine the position of pressure measurement probe.

show abstract

“…Once the pressure distribution is determined, the load capacity can be calculated [ 12 ]. In nondimensional form, the load capacity is given by ( 6 )

…”

Section: Load Carrying Capacity (Lcc)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Pressure Profile in Hydrodynamic Lubrication Thrust Bearing

Najar

Harmain

2014

International Scholarly Research Notices

View full text Add to dashboard Cite

show abstract

“…These equations can be deduced from the equations for continuous media mechanics applied to a Newtonian fluid [8][9][10].…”

Section: Reynolds Equationmentioning

confidence: 99%

Reliability of a Hydrostatic Bearing

Charki¹,

Diop

Champmartin³

et al. 2013

Journal of Tribology

View full text Add to dashboard Cite

show abstract

“…The large tilting pad thrust bearing under oil lubricant was considered. The angular stiffness coefficient was studied as presented in [4]. The hydrodynamic lubrication model was applied to analyze the characteristics of thrust bearing in a ship propulsion system.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on axial vibration of water-lubricated small thrust bearing considering grooved pad

Boonlong¹,

Jeenkour²

2017

Vib. proced.

View full text Add to dashboard Cite

Abstract. This paper presents the effect of pad with transverse grooves on the axial vibration for a small thrust bearing under water lubricated. Due to downsizing of electronic devices, the component part such as the thrust bearing in the micro fabrication becomes small size. Therefore, to study the characteristic of vibration for a small thrust bearing under water lubricated is significant for high precision machining. The hydrodynamic lubrication model was used to predict the water film thickness, the water pressure profile, and the bearing stiffness. A finite difference method (FDM) and a Newton-Raphson scheme are employed to achieve numerical results, i.e. the water pressure distributions, the water lubricating film thicknesses and the bearing stiffness under the variation of groove depths. The grooved shape of pads, that examined in this paper, was elliptical shape. The equation of motion under the impulse excitation considering in the axial vibration for a small thrust bearing was solved by using a Runge-Kutta method. The numerical results showed that the use of elliptical transverse grooves is effective to increases the fluid film stiffness and the maximum displacement in the axial vibration is able to be reduced.

show abstract

Determination of a large tilting pad thrust bearing angular stiffness

Cited by 19 publications

References 15 publications

Numerical Investigation of Pressure Profile in Hydrodynamic Lubrication Thrust Bearing

Numerical Investigation of Pressure Profile in Hydrodynamic Lubrication Thrust Bearing

Reliability of a Hydrostatic Bearing

Numerical study on axial vibration of water-lubricated small thrust bearing considering grooved pad

Contact Info

Product

Resources

About