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RESEARCH PAPERS

Bouncing Vibration and Complete Tracking Conditions of a Contact Recording Slider Model on a Harmonic Wavy Disk Surface

[+] Author and Article Information
Kyosuke Ono, Kan Takahashi

Department of Mechanical Engineering and Science, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152, Japan

J. Tribol 119(4), 720-725 (Oct 01, 1997) (6 pages) doi:10.1115/1.2833876 History: Received May 15, 1995; Revised May 20, 1996; Online January 24, 2008

Abstract

An extended study of the general characteristics of the bouncing vibrations of a contact recording head slider was done for a single-degree-of-freedom slider model bouncing on a harmonic wavy disk surface with linear contact stiffness and damping. The relationship between bounce height and waviness frequency and the role of a top contact point necessary for stable bouncing vibrations are discussed. Since the dynamic contact force increases to ten times the static slider load even when the bounce height is only one nanometer, the importance of complete tracking without separation is discussed. Then the complete tracking conditions of disk surface waviness under disturbances of ten nanometer bounce height are calculated for various design parameter values, including the waviness phase. It is also shown that a collision model can predict almost the same complete tracking zones as an elastic contact model.

Copyright © 1997 by The American Society of Mechanical Engineers
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