Static and Dynamic Performance Analysis of a Novel Mesoscale Gas Foil Bearings Consider the Effect of Slip Flow

doi:10.3901/JME.2017.17.103

Abstract

Abstract: A stiffness model of the elastic foundation was carried out and a test rig was built to test the stiffness of the elastic layer. The test results confirmed the predictions. Static and dynamic performance of the bearing was predicted by coupling the stiffness model of the elastic foundation and the Reynolds equation which considering first order slip flow. Predictions show that the effects of slip flow become significant as the load increase. Dynamic stiffness coefficients increase as speed increase, whereas dynamic damping coefficients show opposite trend. The dynamic stiffness coefficients decrease when considering the effects of slip flow, while the dynamic damping coefficients increase. Moreover, the thickness and number of the elastic foundation influence the static and dynamic performance significantly.

Key words: FDM, microscale gas foil bearings, slip flow, static and dynamic performance

CLC Number:

TH133

FENG Kai, WANG Qianzhen, LI Wenjun, ZHAO Xueyuan, ZHANG Zhiming. Static and Dynamic Performance Analysis of a Novel Mesoscale Gas Foil Bearings Consider the Effect of Slip Flow[J]. Journal of Mechanical Engineering, 2017, 53(17): 103-112.

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