• CN:11-2187/TH
  • ISSN:0577-6686

›› 2000, Vol. 36 ›› Issue (6): 106-109.

• 论文 • 上一篇    下一篇

高密磁记录系统的动力学分析

陈云飞   

  1. 东南大学机械系
  • 发布日期:2000-06-15

DYNAMIC RESPONSE OF FLYING HEADS IN HIGH DENSITY RECORDING SYSTEMS

Chen Yunfei   

  1. Southeast University
  • Published:2000-06-15

摘要: 讨论多聚酯流体润滑的IBM3370磁头/磁盘系统,以期提高磁记录密度。润滑模型中考虑超薄流体润滑的剪薄效应,并用有限差分法对润滑方程进行求解,应用摄动理论建立IBM3370磁头/磁盘系统的动力学模型,分别对气体润滑和液体润滑的2自由度磁头的动力响应进行仿真。仿真结果表明,液膜润滑的磁头飞浮高度在20nm时,磁头仍能保持较好的稳定性。

关键词: 薄膜润滑, 磁头/磁盘系统, 流变模型

Abstract: A liquid lubricated head disk system is introduced to improve recording density. Subjected to high shear rate the rheology of the ultra-thin film confined in the head and disk interface is different from that of the bulk continuum theory. The shear thinning effect is considered in setting up the mathematical model of the ultra-thin film theology. The Reynolds equation and the perturbation theory are employed to set up the static pressure distribution model and to deduce the dynamic pressure equation. The static and dynamic equations are solved by finite difference method. Based on the dynamic analysis the dynamic response of the IBM 3370 alider is simulated and some valuable results are obtained about the static and dynamic characteristics of the liquid lubricated head disk systems.

Key words: Head-disk system, Rheology model, Thin film lubrication

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