Effect of an Out-of-Sphericity Error on the Radial Stiffness of an Air Dynamic Bearing

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概要

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• Out-of-sphericity error is degree of deformation of an air bearing sphere deviated from a perfect sphere. This paper investigates numerically the effect of out-of-sphericity error on the radial stiffness of an air bearing. Three types of out-of-sphericity modes are considered. In this study, the stiffness is calculated from pressure distribution at the bearing surface, which is obtained by solving the Reynolds equation. In some cases, large out-of-sphericity errors are found to improve the stiffness of an air bearing. This implies that an air bearing of perfect hemispheres is not necessarily of the best performance. Thus, much labor and cost in manufacturing air bearings can be saved. In addition, the radial stiffness depends greatly on the force applying direction for bearings of radially deformed stator hemisphere.

• 一般社団法人日本機械学会の論文
• 2001-06-15

著者

• Choi Woo

  Department Of Dermatology Sanggye Paik Hospital Inje University College Of Medicine

• Choi Woochun

  Department Of Mechanical Engineering Korea University

• SHIN YongHo

  Graduate School, Korea University

• Shin Y

  Graduate School Korea University

• Shin Yongho

  Graduate School Korea University

• CHOI ChungWhan

  Hyundai Motors

• Shin Yong

  Graduate School, Korea University

• Choi Chung

  Hyundai Motors

• CHOI WOO

  Department of Chemical Engineering, Doshisha University

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