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research-article

A calculation method to investigate the effects of geometric parameters and operational conditions on the static characteristics of aerostatic spherical bearings

[+] Author and Article Information
HAILONG CUI

Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang, China MIANYANG, 621900 China
cuihailong61@foxmail.com

Huan Xia

Mianyang, 621000 People's Republic of China Mianyang, 621000 China
13108111157@163.com

Dajiang Lei

Mianyang, 621000 People's Republic of Chin Mianyang, 621000 China
leidajiang@163.com

Xinjiang Zhang

Mianyang, 621000 People's Republic of China Mianyang, 621000 China
894756240@qq.com

zhengyi Jiang

Northfield Avenue Wollongong, 2522 Australia
jiang@uow.edu.au

1Corresponding author.

ASME doi:10.1115/1.4041365 History: Received April 10, 2018; Revised August 28, 2018

Abstract

In this paper, a calculation method based on MATLAB partial differential equations (PDE) tool is proposed to investigate the static characteristics of aerostatic spherical bearings. The Reynolds equation of aerostatic spherical bearings is transformed into a standard elliptic equation. The effects of geometric parameters and operational conditions on the film pressure, bearing film force and stiffness are studied. The axial and radial eccentricities result in different film pressure distributions, the bearing film force and stiffness are significantly influenced by geometric parameters and operational conditions. The relative optimal parameters are confirmed based on the calculation results. A comparison between the numerical and experimental results is also presented. The highest relative error between the numerical results and experimental data is 11.3%, the calculation results show good agreements with the experimental data, thus verifying the accuracy of the calculation method used in this paper.

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