A Review on Performance Characteristics of an Air Foil Thrust Bearing

Shivakumar, Supreeth; NagaRaju, Thippaiah; Ravikumar, R.N.; Rudraiah, Mahesha Chikkabagilu

doi:10.2474/trol.17.276

Cited by 4 publications

(2 citation statements)

References 36 publications

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“…Supreeth and others [17] performed parametric analyses in optimization of foil stiffness for a GFTB of 60 mm diameter that included some CFD simulations. Also, reviews on AFTB [18,19] has enlightened on the factors affecting the performance of the bearing including some informative research gaps.…”

Section: Introductionmentioning

confidence: 99%

Parametric Studies on Performance of Oil-Free Thrust Foil Bearings at Lower Speeds

Shivakumar¹,

Raju²,

Ravikuma³

et al. 2023

Tribol. Ind.

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The present work involves an experimental analysis on gas-lubricated foil thrust bearing (FTB) that has major applications in food processing units at lower operating speeds. Parametric studies include testing thrust foil bearings with various foil configurations in terms of foil thickness, foil geometry, and foil material. Novel bearing testing apparatus designed and fabricated for the purpose supported a larger diameter (224 mm) thrust foil bearing, operated at speeds ranging from 10,000 rpm to 18,000 rpm. Performance of air foil thrust bearing (AFTB) concerning static structural stiffness and load bearing capability was determined in optimizing the best foil configuration. A novel dimensionless number was formulated that emphasizes the affecting factors of thrust foil bearing with respect to axial loads.

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Section: Introductionmentioning

confidence: 99%

Parametric Studies on Performance of Oil-Free Thrust Foil Bearings at Lower Speeds

Shivakumar¹,

Raju²,

Ravikuma³

et al. 2023

Tribol. Ind.

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“…Some experimentations by R N Ravikumar and others [14,15] on top foil configurations added enormous knowledge to the present study. Few review literature [16][17][18] furnished deeper knowledge on numerous research gaps and factors affecting the load capabilities of FTB.…”

Section: Introductionmentioning

confidence: 99%

Experimental and CFD analysis of a gas-lubricated foil thrust bearing for various foil configurations

Ravikumar,

Rathanraj,

Arun

et al. 2023

FME Transactions

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Thrust foil bearings operating at hydrodynamic conditions are self-acting (aerodynamic) bearings that support high-speed shafts at mild loading conditions with air as a lubricant and are generally used in low-power gas turbines. This paper presents an experimental study and a detailed computational analysis of dynamic characteristics of the foil thrust bearing (FTB) in terms of load-carrying capabilities as a function of thrust runner speed and gap between the bearing assembly and the runner by considering the effect of bearing parameters such as number of foils, shape of the foils, and assembly of foils on the bearing pad. The parametric study was conducted on a newly conceptualized bearing test rig capable of rotating up to 45,000 rpm speeds that measured the axial loads of the air foil thrust bearings (AFTB). The computational model of the foil thrust bearings for various configurations with top foils is simulated using multiphysics software for foil deflections and pressure distributions on the foil surface. The numerical results were compared with the experimental values, while the air foil thrust bearings with multilayered foils called cascaded foils (patented) had higher load capability in comparison to other conventional bearing models.

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Investigative studies on performance characteristics of aerodynamic foil thrust bearings with various foil configurations

Supreeth,

Raju,

Ravikumar

2024

J Braz. Soc. Mech. Sci. Eng.

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A Review on Performance Characteristics of an Air Foil Thrust Bearing

Cited by 4 publications

References 36 publications

Parametric Studies on Performance of Oil-Free Thrust Foil Bearings at Lower Speeds

Parametric Studies on Performance of Oil-Free Thrust Foil Bearings at Lower Speeds

Experimental and CFD analysis of a gas-lubricated foil thrust bearing for various foil configurations

Investigative studies on performance characteristics of aerodynamic foil thrust bearings with various foil configurations

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