KSTLE International Journal

Korean Tribology Society (한국트라이볼로지학회)
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Modified Boundary-Fitted Coordinate System Method for HDD Slider Analysis

  • Hwang, Pyung (School of Mechanical Engineering, Yeungnam University) ;
  • Polina V. Khan (Graduated Students, Department of Mechanical Engineering, Yeungnam University)
  • Published : 2004.12.01
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Abstract

The hard disk drive performance depends strongly on air bearing characterisitcs of the head slider. The objective of the slider design is to provide accurate positioning of the magnetic read/write element at the very small height above the disk. Application of the numerical methods is required due to complexity of the air bearing surface of the slider. The Boundary-Fitted Coordinate System Divergence Formulation method can be used for calculation of pressure distribution in the case of steep film thickness gradients. In the present work, the interpolating functions used in the expression for the Couette flow are modified in order to improve the solution characteristics in the extremely high compressibility number region. The advantages of the modified method are demonstrated on example of the flat skewed slider. Finally, the modi.ed method is applied to analysis of the static characteristics of the femto-slider. The analysis results indicate the effect of the silder's air bearing surface crown on the flying height and the pitching angle in steady state position.

Keywords

References

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