Experimental study of aerodynamic excitation mechanism in shroud clearance on flow-induced disk vibration of HDD

被引：0
作者：
Precision Machinery Engineering, Faculty of Science and Technology, Ninon University, 7-24-1 Narashinodai, Funabashi-shi, Chiba, 274-8501, Japan [1 ]
机构：
[1] Precision Machinery Engineering, Faculty of Science and Technology, Ninon University, Funabashi-shi, Chiba, 274-8501
来源：
Nihon Kikai Gakkai Ronbunshu C | 2007年 / 5卷 / 1329-1337期
关键词：
Axi-symmetric flow; Flow induced vibration; Magnetic disk drive; Rotating disk; Turbulent flow; Unsteady flow;
D O I：
10.1299/kikaic.73.1329
中图分类号：
学科分类号：
摘要：
This paper deals with an excitation mechanism of the flow induced disk vibration of HDD. Since the shroud clearance is very influential factor in the disk vibration, we examined experimentally how the aerodynamic excitation force in the shroud clearance generates. A flow condition in the shroud clearance and the relation between the flow condition and the disk vibration were investigated. Experiments show that making the shroud clearance small leads to reduction of the excitation force and that the excitation force occurs mainly near the disk edge. The vibration amplitude of the disk has a relation with the Reynolds number on the shroud clearance as a characteristic length, so it is considered necessary to make the circumferential flow in the shroud clearance less turbulent for reduction of vibration of the disks.
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页码：1329 / 1337
页数：8
相关论文
共 13 条
  • [1] Bouchard G., Talke F., Non-repeatable flutter of magnetic recording disks, IEEE, Transactions on Magnetics, MAG-22, 5, pp. 1019-1021, (1986)
  • [2] McAllister J., The effect of disk platter resonances on track misregistration in 3.5 inch disk drives, IEEE, Transactions on Magnetics, 32, 3, pp. 1762-1766, (1996)
  • [3] Cho S., Et al., JSME/ASME, Joint MPE '03, MC-27, pp. 201-202, (2003)
  • [4] Humphrey J.A.C., Et al., Unsteady laminar flow between a pair of disks co-rotating in a fixed cylindrical enclosure, American Institute of Physics, Phys.Fluids, A7, pp. 1225-1240, (1995)
  • [5] Lennemann E., Aerodynamic Aspects of Disk Files, IBM J. Res. Develop, 18, 6, (1974)
  • [6] Scott D.A., Et al., The flow between shrouded co-rotating disks, American Institute of Physics, Phys. Fluids, A1, 2, pp. 241-251, (1989)
  • [7] Amemiya K., Et al., Flow between Shrouded co-rotating Disks, Transactions of the Japan Society of Mechanical Engineers, Series B, 66, 650, pp. 2559-2564, (2000)
  • [8] Suzuki J., Et al., Exciting and damping effects on flow induced vibration in co-rotating disk, ASME Information Storage and Processing Systems Conference, (2005)
  • [9] Anoda Y., Non-axial-symmetric swirling flow between co-rotating parallel disks, Transactions of the Japan Society of Mechanical Engineers, Series B, 49, 440, pp. 809-817, (1983)
  • [10] Imai S., Et al., Reduction of Disk Flutter by Decreasing Disk-to-Shroud Spacing, IEEE Transactions on Magnetics, 35, 5, pp. 2301-2303, (1999)
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