Contours of surface texture of contact faces are not always parallel to the directions of the axis in solving Reynolds equations with finite difference method, and this often induces significant pressure saw-tooth effect, which results in an unignored analysis error. In this paper, pseudo-nine-point finite difference, as a new finite difference method, is introduced to solve the lubrication numerical problem of pressure saw-tooth. Also, application is carried out in gas lubrication of hard disk systems to verify the validity of the new method. In analysis, pressure distributions and gas floating forces are calculated for two different types of sliders, and the astringency and efficiency of the new method is discussed. Numerical results show that the pseudo-nine-point finite difference method can restrain pressure saw-tooth evidently, and presents better astringency and efficiency than the traditional five-point finite difference method. With the increase in mesh density, pressure distribution and gas floating force trend to steady. Also, numerical values of the floating force agree well with the experimental ones.
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October 2009
Technical Briefs
Pseudo-Nine-Point Finite Difference Method for Numerical Analysis of Lubrication
Shaoxian Bai,
Shaoxian Bai
College of Mechanical Engineering,
Zhejiang University of Technology
, Hangzhou 310032, China
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Xudong Peng,
Xudong Peng
College of Mechanical Engineering,
Zhejiang University of Technology
, Hangzhou 310032, China
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Yonggang Meng,
Yonggang Meng
State Key Laboratory of Tribology,
Tsinghua University
, Beijing 100084, China
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Shizhu Wen
Shizhu Wen
State Key Laboratory of Tribology,
Tsinghua University
, Beijing 100084, China
Search for other works by this author on:
Shaoxian Bai
College of Mechanical Engineering,
Zhejiang University of Technology
, Hangzhou 310032, China
Xudong Peng
College of Mechanical Engineering,
Zhejiang University of Technology
, Hangzhou 310032, China
Yonggang Meng
State Key Laboratory of Tribology,
Tsinghua University
, Beijing 100084, China
Shizhu Wen
State Key Laboratory of Tribology,
Tsinghua University
, Beijing 100084, ChinaJ. Tribol. Oct 2009, 131(4): 044502 (6 pages)
Published Online: September 22, 2009
Article history
Received:
July 10, 2008
Revised:
July 12, 2009
Published:
September 22, 2009
Citation
Bai, S., Peng, X., Meng, Y., and Wen, S. (September 22, 2009). "Pseudo-Nine-Point Finite Difference Method for Numerical Analysis of Lubrication." ASME. J. Tribol. October 2009; 131(4): 044502. https://doi.org/10.1115/1.3195039
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