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Material selection is one of the most important steps in the manufacturing process of foil bearing. In this study, an experimental work is carried out to study the effect of operating temperature on the damping coefficients and the elastic modulus of Inconel X-750 and SUS321. Then, the influence of pre-deformation on the damping coefficients and the elastic modulus of Inconel X-750 are discussed. Finally, this paper calculates the rotor trajectory supported by the foil bearing considering the different pre-deformation of the foil. The results show that for the foil bearing supporting the rotor system shown in this paper, the Inconel X-750 with 10% pre-deformation is the best choice.

The Influence of Material Selection and Pre-deformation on the Perfor-mance of Foil Bearing