Numerical Analysis of Dynamic Coefficients for Gas Film Face Seals-Reference-Cited by-同舟云学术

Numerical Analysis of Dynamic Coefficients for Gas Film Face Seals

Published:2002-09-24 Issue:4 Volume:124 Page:743-754
ISSN:0742-4787
Container-title:Journal of Tribology
language:en
Short-container-title:

Author:

Liu Yuchuan¹,Shen Xinmin²,Xu Wanfu³

Affiliation:

1. State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China

2. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

3. Lubrication Technology Research Center, Shenyang Institute of Technology, Shenyang 110015, China

Abstract

A numerical analysis of stiffness and damping coefficients for gas film face seals in three degrees of freedom is presented in this paper. By applying small perturbation approximation, the steady and perturbed Reynolds equations, taking account of both hydrodynamic and hydrostatic effects, are obtained and solved by finite element method. Several numerical samples, including externally pressurized annular thrust gas bearings and spiral groove thrust gas bearings, validate the model and numerical algorithm. The results show that the interactions between axial and angular perturbation are negligible. Hence, in the dynamic analysis of gas film face seals, the perturbation in three degrees of freedom can be simplified as two independent ones, an axial movement and an angular wobble around two orthogonal axes perpendicular to axial direction.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

Link

http://asmedigitalcollection.asme.org/tribology/article-pdf/124/4/743/5662056/743_1.pdf

Reference21 articles.

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3. Zhou, H., 1981, “A High Order, Isoparametric, Finite Element Method for the Calculation of Static and Perturbed Frequency Characteristics of Spiral-Grooved Self Acting Gas Bearings,” Proc. 8th International Gas Bearing Symposium, BHRA Fluid Engineering, Cranfield, England, pp. 229–236.

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