Analysis of static and dynamic characteristics of spiral-grooved gas journal bearings in high speed-Reference-Cited by-同舟云学术

Analysis of static and dynamic characteristics of spiral-grooved gas journal bearings in high speed

Published:2019-08-15 Issue:19-20 Volume:233 Page:6774-6792
ISSN:0954-4062
Container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

Author:

Song Laiyun¹,Cheng Kai¹²,Ding Hui¹³^ORCID,Chen Shijin¹,Gao Qiang¹

Affiliation:

1. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, PR China

2. College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge, Middlesex, UK

3. Key Laboratory of Micro-system and Micro-structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin, China

Abstract

The spiral grooves structures could promote load capacity and improve stability of the gas journal bearings working in high-speed condition. In this study, the unsteady Reynolds equation is solved by linear perturbation method and finite difference method in which the mesh of the groove region is specially treated. The static and dynamic characteristics of spiral grooves journal gas bearings are investigated in different working conditions and the pumping effect caused by spiral-groove structure is revealed and analyzed. Further, the influences of groove structural parameters on the dynamic stiffness and damping coefficients are studied and discussed, which provides guidelines for the design of the journal gas bearings with spiral grooves.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1177/0954406219869751

Reference18 articles.

1. Spring and Damping Coefficients for the Tilting-Pad Journal Bearing

2. A Theoretical Analysis of Whirl Instability and Pneumatic Hammer for a Rigid Rotor in Pressurized Gas Journal Bearings

3. Theoretical Investigation of Fluid Inertia Effects and Stability of Self-Acting Gas Journal Bearings

4. Numerical calculation and experimental verification of static and dynamic characteristics of aerostatic thrust bearings with small feedholes

5. Application of a hybrid numerical method to the bifurcation analysis of a rigid rotor supported by a spherical gas journal bearing system

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