Bearings

Test rigs involving herringbone grooved journal bearings, foil bearings, aerostatic bearings as well as Rayleigh step journal bearings help to validate in-house numerical and theoretical models for the performance prediction of gas-lubricated high-speed rotors, ranging from 8 to 40 mm in diameter, with speeds up to 4500 revolutions per second. The experimental methodologies involve both rotor- and stator-side pressure measurements of the gas film, dynamic excitations and static loading of full-size rotors. Real-gas effects, humid air effects, condensation of lubricant, advanced bearing design and measurement techniques are among the research interests of the laboratory in the field of gas lubrication.

Recent Journal Publications

Data-Driven Model for the Dynamic Characteristics of O-Rings for Gas Bearing Supported Rotors

P. Bättig; J. Schiffmann 

Journal of Applied Mechanics. 2019-08-01. Vol. 86, num. 8, p. 081003. DOI : 10.1115/1.4043473.

Flexible support and enhanced groove geometries for gas lubricated bearings

P. K. Bättig / J. A. Schiffmann (Dir.)  

Lausanne, EPFL, 2019. 

Unstable tilting motion of flexibly supported gas bearing bushings

P. K. Bättig; J. A. Schiffmann 

Mechanical Systems and Signal Processing. 2022-01-01. Vol. 162, p. 107981. DOI : 10.1016/j.ymssp.2021.107981.

Experimental Investigation of Enhanced Grooves for Herringbone Grooved Journal Bearings

P. K. Bättig; P. H. Wagner; J. A. Schiffmann 

Journal of Tribology. 2022-03-18. Vol. 144, num. 9. DOI : 10.1115/1.4053978.

Nonlinear study on a rigid rotor supported by herringbone grooved gas bearings: Theory and validation

W. Liu; P. Bättig; P. H. Wagner; J. Schiffmann 

Mechanical Systems and Signal Processing. 2021-01-01. Vol. 146, p. 1-20, 106983. DOI : 10.1016/j.ymssp.2020.106983.

Performance potential of gas foil thrust bearings enhanced with spiral grooves

E. Guenat; J. Schiffmann 

Tribology International. 2019-03-01. Vol. 131, p. 438-445. DOI : 10.1016/j.triboint.2018.11.003.

Thin Gas Film Isothermal Condensation in Aerodynamic Bearings

E. Guenat; J. Schiffmann 

Journal of Tribology. 2019-11-01. Vol. 141, num. 11, p. 111701. DOI : 10.1115/1.4044447.

Advanced design methods and non-ideal gas lubrication applied to aerodynamic bearings

E. P. Guenat / J. A. Schiffmann (Dir.)  

Lausanne, EPFL, 2020. 

Dynamic force coefficients identification on air-lubricated herringbone grooved journal bearing

E. Guenat; J. Schiffmann 

Mechanical Systems and Signal Processing. 2020-02-01. Vol. 136, p. 106498. DOI : 10.1016/j.ymssp.2019.106498.

A Review of Grooved Dynamic Gas Bearings

L. Gu; E. P. Guenat; J. A. Schiffmann 

Applied Mechanics Reviews. 2020-01-01. Vol. 72, p. 010802. DOI : 10.1115/1.4044191.

Multi-Objective Optimization of Grooved Gas Journal Bearings for Robustness in Manufacturing Tolerances

E. P. Guenat; J. A. Schiffmann 

Tribology Transaction. 2019-08-22. Vol. 62, num. 6, p. 1041-1050. DOI : 10.1080/10402004.2019.1642547.

Analysis of Spiral-Grooved Gas Journal Bearings by the Narrow-Groove Theory and the Finite Element Method At Large Eccentricities

E. Iseli; E. Guenat; R. Tresch; J. Schiffmann 

Journal of Tribology. 2020-04-01. Vol. 142, num. 4, p. 041802. DOI : 10.1115/1.4045636.

Effects of humid air on aerodynamic journal bearings

E. Guenat; J. Schiffmann 

Tribology International. 2018-06-15. Vol. 127, p. 333-340. DOI : 10.1016/j.triboint.2018.06.002.

Spatially Sampled Pressure Profile Measurements in Externally Pressurized Gas Journal Bearings

K. Shalash; E. Guenat; J. Schiffmann 

Tribology Transactions. 2018-10-04.  p. 1-28. DOI : 10.1080/10402004.2018.1480078.

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