DSMC/MGL comparisons of stresses on slider air bearing with nanometer spacings

Author

Fukui, Shigehisa ; Yamane, Kiyomi

Author_Institution

Fac. of Eng., Tottori Univ., Japan

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2153

Lastpage

2155

Abstract

Pressure and shear stress distributions on the slider air-bearing surface were calculated using a molecular gas-film lubrication (MGL) equation and direct simulation Monte Carlo (DSMC) method with an accommodation coefficient α as a parameter, which characterizes the gas surface scattering at the boundary surfaces. As the accommodation coefficient α decreases, which means that the rates of diffuse reflection at boundary surface decreases, pressures and shear stresses decrease. Both MGL analyses and DSMC results agree well with each other.

Keywords

Monte Carlo methods; hard discs; lubrication; magnetic heads; molecule-surface impact; stress analysis; Maxwell-type boundary condition; accommodation coefficient; boundary surfaces; diffuse reflection rates; direct simulation Monte Carlo method; flying head slider; gas surface scattering; molecular gas-film lubrication equation; nanometer spacings; pressure distributions; shear stress distributions; slider air bearing; Boundary conditions; Equations; Lubrication; Monte Carlo methods; Reflection; Scattering parameters; Shearing; Solid modeling; Stress; Tribology;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802799

Filename

1042121