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TECHNICAL PAPERS

New Designs of HDD Air-Lubricated Sliders Via Topology Optimization

[+] Author and Article Information
Chung-Jen Lu, Tai-Kuo Wang

Department of Mechanical Engineering, National Taiwan University, No. 1 Roosevelt Rd. Sec. 4, Taipei 10617, Taiwan, Republic of China

J. Tribol 126(1), 171-176 (Jan 13, 2004) (6 pages) doi:10.1115/1.1631016 History: Received August 23, 2002; Revised May 13, 2003; Online January 13, 2004
Copyright © 2004 by ASME
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References

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O’Hara,  M. A., and Bogy,  D. B., 1995, “Robust Design Optimization Techniques for Ultra-Low Flying Sliders,” IEEE Trans. Magn., 31, pp. 2955–2957.
Lu,  S., Hu,  Y., O’Hara,  M., Bogy,  D. B., Bhatia,  C. S., and Hsia,  Y.-T., 1996, “Air Bearing Design, Optimization, Stability Analysis and Verification for sub-25nm Flying,” IEEE Trans. Magn., 32, pp. 1.3–109.
O’Hara,  M., Hu,  Y., and Bogy,  D. B., 1996, “Effects of Slider Sensitivity Optimization,” IEEE Trans. Magn., 32, pp. 3744–3746.
Yoon,  S.-J., and Choi,  D.-H., 1997, “An Optimum Design of the Transverse Pressure Contour Slider for Enhanced Flying Characteristics,” ASME J. Tribol., 119, pp. 520–524.
Kang,  T.-S., Choi,  D.-H., and Jeong,  T.-G., 2001, “Optimal Design of HDD Air-Lubricated Slider Bearings for Improving Dynamic Characteristics and Operating Performance,” ASME J. Tribol., 123, pp. 541–547.
Rozvany,  G., Bendsoe,  M. P., and Kirsch,  U., 1995, “Layout Optimization of Structures,” Appl. Mech. Rev., 48, pp. 41–117.
Eschenauer,  H. A., and Olhoff,  N., 2001, “Topology Optimization of Continuum Structures: A review,” Appl. Mech. Rev., 54, pp. 331–390.
Hanke, A. V., and Talke, F. E., 2002, “A New Universal Approach for Slider Optimization,” Proceedings of 2002 ASME/STLE Joint International Tribology Conference, ASME, New York.
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Goldberg, D. E., 1989, Genetic Algorithms in Search Optimization and Machine Learning, Addison-Wesley, New York.
Lu, S., 1997, “Numerical Simulation of Slider Air Bearings,” Doctoral dissertation, Department of Mechanical Engineering, University of California, Berkeley.
Patankar, S. V., 1980, Numerical Heat Transfer and Fluid Flow, McGraw-Hill, New York.
Lu, C.-J., Chiou, S.-S., and Wang, T.-K., 2002, “Adaptive Multilevel Method for the Air Bearing Problem in Hard Disk Drives,” submitted to Tribol. Int.
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Figures

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Flow chart of the optimization procedure
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Schematic of the grid-slider
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Flow chart of the genetic algorithm
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Geometric dimensions of the 30 percent slider
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Convergence history of the cost function for the grid-slider
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Configuration of the optimal grid-slider
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Pressure distribution of the optimal grid-slider
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Schematic of the H-shaped slider and the design variables
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Variations in the flying height (a) and roll angle (b) of the optimal grid-slider (solid) and H-shaped slider (dashed)
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A different optimal grid-slider using the same initial population as of Fig. 6

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