Title of article :
Dynamic stability experiments of compliant foil thrust bearing with viscoelastic support
Author/Authors :
Zhou، نويسنده , , Quan and Hou، نويسنده , , Yu and Chen، نويسنده , , Chunzheng، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2009
Pages :
4
From page :
662
To page :
665
Abstract :
In order to reduce the complexity of machine construction and improve the mechanical efficiency, high speed rotation machineries usually implement self-acting gas bearings to substitute the traditional oil-lubricated bearings. This paper presents test results of a gas thrust bearing with viscoelastic support which is designed for high speed turbo-machinery. The gas bearing, which belongs to compliant foil bearings, consists of a top thin metal foil and a bottom thin rubber foil. Static and stability experiments are conducted on a high speed gas turbine test rig. The static results indicate that the structural stiffness of test bearing generally increases with the increase in axial load and the decrease in thickness of bottom foil. In the rotation tests, rotor runs stably with small vibration amplitude, which is dominant in waterfall plot during whole speed up procedure. It shows that test bearing has preferable stability characteristics for high speed gas turbines.
Keywords :
Foil thrust bearing , Structural stiffness , Bearing stability
Journal title :
Tribology International
Serial Year :
2009
Journal title :
Tribology International
Record number :
1425895
Link To Document :
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