Design of flat pad aerostatic bearings with the aid of finite element analysis

S. M. Barrans, N. Bhat

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A need has been recognised for an aerostatic, flat pad bearing design procedure that has the simplicity of use of design charts, whilst retaining the accuracy offered by finite difference or finite element models. To meet this requirement a finite element code has been combined with the automatic mesh generation procedure described here. The results provided by this code for a range of bearing designs are also presented. It is shown that the identification of an optimum pressure ratio is more complex than with journal bearings, due to the lack of a natural, concentric position and the variation in pressure ratio over a number of orifices. It is concluded that the multi-criteria nature of the bearing design problem should be taken into account at an early stage. A code capable of determining a Pareto optimal but criteria constrained set of bearing designs is proposed.

Original languageEnglish
Title of host publicationLaser Metrology and Machine Performance VI
Subtitle of host publicationProceedings of the 6th International Conference on Laser Metrology and Machine Performance
EditorsDerek Ford
PublisherWIT Press
Pages361-370
Number of pages10
Volume44
ISBN (Print)1853129909, 9781853129902
Publication statusPublished - 2003
Event6th International Conference on Laser Metrology, Machine Tool, CMM and Robot Performance - University of Huddersfield, Huddersfield, United Kingdom
Duration: 1 Jul 20033 Jul 2003
Conference number: 6

Conference

Conference6th International Conference on Laser Metrology, Machine Tool, CMM and Robot Performance
Abbreviated titleLAMDAMAP 2003
CountryUnited Kingdom
CityHuddersfield
Period1/07/033/07/03

Fingerprint

Bearing pads
Bearings (structural)
Finite element method
Mesh generation
Journal bearings
Orifices

Cite this

Barrans, S. M., & Bhat, N. (2003). Design of flat pad aerostatic bearings with the aid of finite element analysis. In D. Ford (Ed.), Laser Metrology and Machine Performance VI: Proceedings of the 6th International Conference on Laser Metrology and Machine Performance (Vol. 44, pp. 361-370). WIT Press.
Barrans, S. M. ; Bhat, N. / Design of flat pad aerostatic bearings with the aid of finite element analysis. Laser Metrology and Machine Performance VI: Proceedings of the 6th International Conference on Laser Metrology and Machine Performance. editor / Derek Ford. Vol. 44 WIT Press, 2003. pp. 361-370
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abstract = "A need has been recognised for an aerostatic, flat pad bearing design procedure that has the simplicity of use of design charts, whilst retaining the accuracy offered by finite difference or finite element models. To meet this requirement a finite element code has been combined with the automatic mesh generation procedure described here. The results provided by this code for a range of bearing designs are also presented. It is shown that the identification of an optimum pressure ratio is more complex than with journal bearings, due to the lack of a natural, concentric position and the variation in pressure ratio over a number of orifices. It is concluded that the multi-criteria nature of the bearing design problem should be taken into account at an early stage. A code capable of determining a Pareto optimal but criteria constrained set of bearing designs is proposed.",
keywords = "Algorithms, Atmospheric pressure, Design, Finite difference method, Finite element method, Graphic methods, Laminar flow, Problem solving, Stiffness, Surface properties, Viscosity, Aerostatic bearings",
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Barrans, SM & Bhat, N 2003, Design of flat pad aerostatic bearings with the aid of finite element analysis. in D Ford (ed.), Laser Metrology and Machine Performance VI: Proceedings of the 6th International Conference on Laser Metrology and Machine Performance. vol. 44, WIT Press, pp. 361-370, 6th International Conference on Laser Metrology, Machine Tool, CMM and Robot Performance, Huddersfield, United Kingdom, 1/07/03.

Design of flat pad aerostatic bearings with the aid of finite element analysis. / Barrans, S. M.; Bhat, N.

Laser Metrology and Machine Performance VI: Proceedings of the 6th International Conference on Laser Metrology and Machine Performance. ed. / Derek Ford. Vol. 44 WIT Press, 2003. p. 361-370.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - A need has been recognised for an aerostatic, flat pad bearing design procedure that has the simplicity of use of design charts, whilst retaining the accuracy offered by finite difference or finite element models. To meet this requirement a finite element code has been combined with the automatic mesh generation procedure described here. The results provided by this code for a range of bearing designs are also presented. It is shown that the identification of an optimum pressure ratio is more complex than with journal bearings, due to the lack of a natural, concentric position and the variation in pressure ratio over a number of orifices. It is concluded that the multi-criteria nature of the bearing design problem should be taken into account at an early stage. A code capable of determining a Pareto optimal but criteria constrained set of bearing designs is proposed.

AB - A need has been recognised for an aerostatic, flat pad bearing design procedure that has the simplicity of use of design charts, whilst retaining the accuracy offered by finite difference or finite element models. To meet this requirement a finite element code has been combined with the automatic mesh generation procedure described here. The results provided by this code for a range of bearing designs are also presented. It is shown that the identification of an optimum pressure ratio is more complex than with journal bearings, due to the lack of a natural, concentric position and the variation in pressure ratio over a number of orifices. It is concluded that the multi-criteria nature of the bearing design problem should be taken into account at an early stage. A code capable of determining a Pareto optimal but criteria constrained set of bearing designs is proposed.

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KW - Atmospheric pressure

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Barrans SM, Bhat N. Design of flat pad aerostatic bearings with the aid of finite element analysis. In Ford D, editor, Laser Metrology and Machine Performance VI: Proceedings of the 6th International Conference on Laser Metrology and Machine Performance. Vol. 44. WIT Press. 2003. p. 361-370