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Short Communication | Open Access

Transformation between polar and rectangular coordinates of stiffness and dampness parameters in hydrodynamic journal bearings

Zhuxin TIAN1, Yu HUANG1,2( )
School of Mechanical Engineering, Hubei University of Arts and Science, Xiangyang 441053, China
State Key Lab of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Abstract

The stiffness and dampness parameters of journal bearings are required in rectangular coordinates for analyzing the stability boundary and threshold speed of oil film bearings. On solving the Reynolds equation, the oil film force is always obtained in polar coordinates; thus, the stiffness and dampness parameters can be easily obtained in polar coordinates. Therefore, the transformation between the polar and rectangular coordinates of journal bearing stiffness and dampness parameters is discussed in this study.

Keywords

coordinate transformationstiffness parametersdampness parametershydrodynamic journal bearings

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Friction
Volume 9 Issue 1,
February 2021
Pages 201-206
DOI: 10.1007/s40544-019-0328-9
Cite this article:
TIAN Z, HUANG Y. Transformation between polar and rectangular coordinates of stiffness and dampness parameters in hydrodynamic journal bearings. Friction, 2021, 9(1): 201-206. https://doi.org/10.1007/s40544-019-0328-9

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Received: 05 May 2019
Revised: 26 August 2019
Accepted: 11 September 2019
Published: 18 January 2020
© The author(s) 2019

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