This paper studies the static and dynamic coefficients of an externally pressurized porous gas journal bearing. The finite difference method is used to solve the Reynolds equation of the bearing to obtain the static load capacity. The linear perturbation method is adopted to derive the perturbation equations considering four degrees-of-freedom (4DOF), namely, the translational movements in x and y directions and the rotational movements around x and y directions. The effects of various parameters on the dynamic behaviors of the journal bearing are studied. These parameters include the bearing number, the supply pressure, the feeding parameter, the length-to-diameter ratio, the porosity parameter, the eccentricity ratio, and tilting angles. Simulated results prove that the proposed method is valid in estimating the static and dynamic characteristics of a porous gas journal bearing with 4DOF.
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January 2018
Research-Article
Static and Dynamic Characteristics of Externally Pressurized Porous Gas Journal Bearing With Four Degrees-of-Freedom
Shuyun Jiang,
Shuyun Jiang
Professor
School of Mechanical Engineering,
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
e-mail: jiangshy@seu.edu.cn
School of Mechanical Engineering,
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
e-mail: jiangshy@seu.edu.cn
Search for other works by this author on:
Shengye Lin,
Shengye Lin
School of Mechanical Engineering,
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
Search for other works by this author on:
Chundong Xu
Chundong Xu
School of Mechanical Engineering,
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
Search for other works by this author on:
Shuyun Jiang
Professor
School of Mechanical Engineering,
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
e-mail: jiangshy@seu.edu.cn
School of Mechanical Engineering,
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
e-mail: jiangshy@seu.edu.cn
Shengye Lin
School of Mechanical Engineering,
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
Chundong Xu
School of Mechanical Engineering,
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
Southeast University,
2 Southeast Road, Jiangning District,
Nanjing 211189, China
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received October 30, 2016; final manuscript received May 24, 2017; published online August 16, 2017. Assoc. Editor: Alan Palazzolo.
J. Tribol. Jan 2018, 140(1): 011702 (13 pages)
Published Online: August 16, 2017
Article history
Received:
October 30, 2016
Revised:
May 24, 2017
Citation
Jiang, S., Lin, S., and Xu, C. (August 16, 2017). "Static and Dynamic Characteristics of Externally Pressurized Porous Gas Journal Bearing With Four Degrees-of-Freedom." ASME. J. Tribol. January 2018; 140(1): 011702. https://doi.org/10.1115/1.4037134
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