• CN:11-2187/TH
  • ISSN:0577-6686

›› 2002, Vol. 38 ›› Issue (1): 22-26.

• 论文 • 上一篇    下一篇

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表面粗糙度对磁头磁盘系统静特性的影响

王玉娟;陈云飞;庄苹;颜景平   

  1. 东南大学机械工程系
  • 发布日期:2002-01-15

SURFACE ROUGHNESS EFFECTS ON THE STATIC ELECTRICITY IN MAGNETIC RECORDING SYSTEM

Wang Yujuan;Chen Yunfei;Zhuang Ping;Yan Jingping   

  1. Southeast University
  • Published:2002-01-15

摘要: 在Reynolds方程中引入了压力流因子和剪流因子,考虑粗糙度对超薄气体膜润滑的影响。雷诺方程中综合考虑了气体的可压缩性、稀薄效应以及表面粗糙度等因素,讨论了飞浮高度在25~50mm之间的高密磁盘系统在磁头磁盘都粗糙、磁头粗糙和磁盘粗糙三种情况下的承载能力及系统压强中心的变化。结果表明,粗糙度对高密磁盘系统承载能力的影响很大,粗糙度相同时,磁头粗糙的系统承载能力最好;不同粗糙度模式时,压强中心变化不大。

关键词: 磁头磁盘系统, 粗糙度, 静特性

Abstract: The effect of surface roughness on the static electricity is analyzed through solving the verified Reynolds equation. Pressure flow factor and shear flow factor are included in the verified Reynolds equation. The effects of the nondimensional film thickness, Hs0, the surface characteristics,g, the inverse Knudsen number, D0, and the bearing number, ∧, on the load carrying capacity are discussed. And the changing of pressure center is also investigated. As expected, the load carrying capacity for various roughness approach the smooth load as the ratio, Hs0, becomes greater and greater, and thus the roughness effect is getting smaller and smaller. With the increasing of ∧ and D0 , the roughness effect on the load decreases. Pressure center changes litter while the surface roughness was influenced. The results show that the roughness effect can not be ignored for the designing of the high-density recording disk.

Key words: Magnetic recording system, Static electricity, Surface roughness

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