Dynamic Characteristics of Air-lubricated Slider Bearings for Magnetic Disk Files : Calculation by Finite Element Method : Vibration, Control Engineering, Engineering for Industry

概要

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The floating clearance between the floating head sliders and disks of large capacity magnetic disk files is getting smaller and smaller,with the present values ranging form 0.3 to 0.5 μm. To ensure reliability, dynamic characteristics of sliders subjected to disk oscillation or runout munt be accurately predicted. Finite difference methods or the divergence formulation methods have, to the present, been used to obtain dynamic characteristics of sliders, but difficulties have arisen in treating complex-shaped sliders. In this paper, the finite element method is used to solve these difficulties. The calculated results agree with those obtained by the above-mentioned conventional methods. They also agree with the experimental results obtained using a flat taper-type slider with a yaw angle. Furthermore, the dynamic characteristics of a grooved slider and a negative pressure induction slider have been predicted by this calculation method .The present method is formulated to include the calculations of both static and dynamic characteristics.
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