Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Optimum Design of Head Slider with Ultra-Thin Air-Lubricated Spacing for Enhanced Flying Characteristics

부상특성 향상을 위한 극소 공기윤활막을 지닌 헤드 슬라이더의 형상 최적 설계

  • Published : 2001.04.01
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Abstract

Flying attitudes of the slider, which are flying height, pitch and roll, are affected by the air flow velocity, the skew angle, and the manufacturing tolerances. Traditional designs of the air bearing surface have considered only the flying performances for the variations in the air flow velocity and the skew angle, which are determined by the radial position. In this study, we present the new shape design of the air bearing surface by considering the track seek performance and the air bearing stiffness as well as the traditional design requirements. The optimization technique is used to improve the dynamic characteristics and operating performance of the newly proposed air bearing surface shape design further. The optimized configuration is obtained automatically and the optimally designed sliders show the enhanced flying and dynamic characteristics.

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References

  1. O'Hara, M. A. and Bogy, D. B., 'Robust Design Optimization Techniques for Ultra-Low Flying Sliders,' IEEE Transaction on Magnetics, Vol. 31, No. 6, pp. 2955-2957 https://doi.org/10.1109/20.490201
  2. O'Hara, M. A., Hu, Y., and Bogy, D. B., 1996, 'Effects of Slider Sensitivity Optimization,' IEEE Transaction on Magnetics, Vol. 32, No.5, pp. 3744-3746 https://doi.org/10.1109/20.538823
  3. Yoon, S. J., and Choi, D. H., 1995, 'Design Optimization of the Taper-Flat Slider Positioned by a Rotary Actuator,' ASME Journal of Tribology, Vol. 117, pp. 588-593
  4. Yoon, S. J., and Choi, D. H., 1995, 'An Optimum Design of the Transverse Pressure Contour Slider for Enhanced Flying Characteristics,' ASME Journal of Tribology, Vol. 119, pp. 520-524
  5. Choi, D. H., and Kang, T. S., 1999, 'An Optimization Method for Design of Subambient Pressure Shaped Rail Sliders,' ASME Journal of Tribology, Vol. 121, pp. 575-579
  6. Cha, E., Chiang, C., Enguero, J., and Lee, J.K., 1996, 'Effect of Temperature and Altitude on Flying Height,' IEEE Transaction on Magnetics, Vol. 32, pp. 3729-3731 https://doi.org/10.1109/20.538818
  7. Liu, B., and Soh, S. h., 1996, 'Effects of Seeking Velocity on Air Bearing Skew Angle, Air Flow Speed and Flying Performance of Sliders with Different ABS Design,' IEEE Transactions on Magnetic, Vol. 32, pp. 3693-3695 https://doi.org/10.1109/20.538806
  8. Deng, Z., Mitsuya, Y., and Ohka, M, 1997, 'Flying Characteristics of Head Sliders when Travelling over Magnetic Disk Surfaces,' International Conference Micromechatronics for Information and Precision Equipment, Tokyo, pp. 90-95
  9. Fukui, S., and Kaneko, R., 1988, 'Analysis of Ultra-Thin Gas Film Lubrication Based on Linearized Boltzmann Equation: First Report-Derivation of a Generalized Lubrication Equation Including Thermal Creep Flow,' ASTM Journal of Tribology, Vol. 110, pp. 253-262
  10. Li, W. L., Weng, C. I, and Hwang, C. C., 1996, 'Roughness Effects on the Dynamic Coefficients of Ultra-Thin Gas Film in Magnetic Recoding,' ASME Journal of Lubrication Technology, Vol. 118, pp. 774-782
  11. Vanderplaats, G. N., 1984, Numerical Optimization Techniques for Engineering Design, McGraw-Hill