A simulation method in which grooves are virtually distributed on the slider air bearing instead of on the grooved medium surface has been developed and used to investigate the performance of sliders flying over the surface of a discrete-track medium. The simulated flying height loss due to a discrete-track medium coincides well with the measured data, whereas the average-estimation method overestimates flying height loss. Among the characteristics of a slider flying over the surface of a discrete-track medium that were studied are the flying attitude, the effect of groove parameters on flying profile, and the flying height losses due to manufacturing variation and altitude. The results indicate that when a slider is flying over the surface of a discrete-track medium, it will have a higher of flying height, be more sensitive to altitude, and will have a greater flying height loss.
Issue Section:
Technical Papers
1.
Ishida
, T.
, Morita
, O.
, Noda
, M.
, Seko
, S.
, Tanaka
, S.
, and Ishioka
, H.
, 1993, “Discrete Track Magnetic Disk Using Embossed Substrate
,” IEICE Trans. Fundamentals
0916-8508, E76-A
, pp. 1161
–1163
.2.
Soeno
, Y.
, Moriya
, M.
, Ito
, K.
, Hattori
, K.
, Kaizu
, A.
, Aoyama
, T.
, Matsuzaki
, M.
, and Sakai
, H.
, 2003, “Feasibility of Discrete Track Perpendicular Media for High Track Density Recording
,” IEEE Trans. Magn.
0018-9464, 39
(4
), pp. 1967
–1971
.3.
Soeno
, Y.
, Moriya
, M.
, Kaizu
, A.
, and Takai
, M.
, 2005, “Performance Evaluation of Discrete Track Perpendicular Media for High Recording Density
,” IEEE Trans. Magn.
0018-9464, 41
(10
), pp. 3220
–3222
.4.
Wachenschwanz
, D.
, Jiang
, W.
, Roddick
, E.
, Homola
, A.
, Dorsey
, P.
, Harper
, B.
, Treves
, D.
, and Bajorek
, C.
, 2005, “Design of a Manufacturable Discrete Track Recording Medium
,” IEEE Trans. Magn.
0018-9464, 41
(2
), pp. 670
–675
.5.
Ohkubo
, T.
, and Mitsuya
, Y.
, 1991, “An Experimental Investigation of the Moving Roughness Effect on Thin-Film Gas Lubricant for Flying Head Sliders
,” Adv. Inf. Storage Syst.
1053-184X, 2
, pp. 127
–136
.6.
Hayashi
, T.
, Yoshida
, H.
, and Mitsuya
, Y.
, 2005, “Flying Characteristics of Head Sliders on Patterned Disk Surfaces
,” Proc. of World Tribology Congress III
, Washington, DC, ASME
, New York, Paper No. WTC2005-64390.7.
Tanaka
, H.
, and Bogy
, D. B.
, 1994, “Effects of Disk Surface Texture on Slider Flying Characteristics in Near Contact Interface
,” Technical Report No. 94-017, Computer Mechanics Laboratory, University of California, Berkeley.8.
Hu
, Y.
, and Bogy
, D. B.
, 1997, “Flying Characteristics of a Slider Over Textured Surface Disks
,” IEEE Trans. Magn.
0018-9464, 33
(5
), pp. 3196
–3198
.9.
Duwensee
, M.
, Suzuki
, S.
, Lin
, J.
, Wachenschwanz
, D.
, and Talke
, F. E.
, 2006, “Air Bearing Simulation of Discrete Track Recording Media
,” IEEE Trans. Magn.
0018-9464, 42
(10
), pp. 2489
–2491
.10.
Tagawa
, N.
, and Bogy
, D. B.
, 2002, “Air Film Dynamics for Micro-Textured Flying Head Slider Bearings in Magnetic Hard Disk Drives
,” ASME J. Tribol.
0742-4787, 124
, pp. 568
–574
.11.
Peng
, J.
, Wang
, G.
, Thrivani
, S.
, Chue
, J.
, Nojaba
, M.
, and Thayambali
, P.
, 2006, “Numerical and Experimental Evaluation of Discrete Track Recording Technology
,” IEEE Trans. Magn.
0018-9464, 42
(10
), pp. 2462
–2464
.12.
Wu
, L.
, and Bogy
, D. B.
, 2001, “Numerical Simulation of the Slider Air Bearing Problem of Hard Disk Drives by Two Multidimensional Upwind Residual Distribution Schemes Over Unstructured Triangular Meshes
,” J. Comput. Phys.
0021-9991, 172
, pp. 640
–657
.13.
Burgdorfer
, A.
, 1959, “The Influence of the Molecular Mean Free Path on the Performance of Hydrodynamic Gas Lubricated Bearing
,” ASME J. Basic Eng.
0021-9223, 81
, pp. 94
–100
.14.
Hsia
, Y. T.
, and Domoto
, G. A.
, 1983, “An Experimental Investigation of Molecular Rarefaction Effects in Gas Lubricated Bearings at Ultra-Low Clearances
,” ASME J. Lubr. Technol.
0022-2305, 105
, pp. 120
–130
.15.
Fukui
, S.
, and Kanko
, R.
, 1990, “A Database for Interpolation of Poiseuille Flow Rates for High Knudsen Number Lubrication Problems
,” ASME J. Tribol.
0742-4787, 112
, pp. 78
–83
.16.
Lu
, S.
, 1997, “Numerical Simulation of Slider Air Bearings
,” Ph.D. thesis, Department of Mechanical Engineering, University of California at Berkeley.17.
Deckert
, K.
, Bolasna
, S.
, and Nishihira
, H.
, 1987, “Statistics of Slider Bearing Flying Height
,” Tribology and Mechanics of Magnetic Storage Systems
, Society of Tribologists and Lubrication Engineers
(STLE), Park Ridge, Vol. IV, pp. 1
–5
.Copyright © 2007
by American Society of Mechanical Engineers
You do not currently have access to this content.
