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RESEARCH PAPERS

Dynamic Characteristics of Gas-Lubricated Slider Bearings Under High Knudsen Number Conditions

[+] Author and Article Information
T. Hayashi

NTT Human Interface Laboratories, Nippon Telegraph and Telephone Corporation, Musashino-shi, Tokyo 180, Japan

S. Fukui, T. Ohkubo, R. Kaneko

NTT Applied Electronics Laboratories, Nippon Telegraph and Telephone Corporation, Musashino-shi, Tokyo 180, Japan

J. Tribol 112(1), 111-118 (Jan 01, 1990) (8 pages) doi:10.1115/1.2920214 History: Received March 24, 1989; Online June 05, 2008

Abstract

This paper presents numerical analyses of the dynamic characteristics of gas-lubricated slider bearings under high Knudsen number conditions using a generalized lubrication equation based on the the Boltzmann equation. These analyses are compared with those of the slip flow approximation equations and the differences are clarified. The present analysis is applied to the dynamic response of flying head sliders for magnetic disk storage devices. For a small slider with ultra-thin spacing, the deviations of the slip flow approximation equations are remarkable in regard to steady flying characteristics, but insignificant in regard to dynamic characteristics.

Copyright © 1990 by The American Society of Mechanical Engineers
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