磁头表面结构对硬盘驱动器气膜润滑特性的影响

华南理工大学学报（自然科学版） ›› 2007, Vol. 35 ›› Issue (8): 38-43.

磁头表面结构对硬盘驱动器气膜润滑特性的影响

牛荣军黄平

华南理工大学机械工程学院，广东广州 510640

收稿日期:2006-10-10 出版日期:2007-08-25 发布日期:2007-08-25
通信作者: 牛荣军(1977-)，男，博士，主要从事微流体摩擦与润滑研究. E-mail:niurongjun@163.com
作者简介:牛荣军(1977-)，男，博士，主要从事微流体摩擦与润滑研究.
基金资助:
国家重点基础研究发展计划资助项目( 2003 CB716205 )

Influence of Air-Bearing Surface on Gas Lubrication Performances of Hard Disk Drive

Niu Rong-jun Huang Ping

School of Mechanical Engineering , South China. Univ. of Tech. , Guangzhou 510640 , Guangdong , China

Received:2006-10-10 Online:2007-08-25 Published:2007-08-25
Contact: 牛荣军(1977-)，男，博士，主要从事微流体摩擦与润滑研究. E-mail:niurongjun@163.com
About author:牛荣军(1977-)，男，博士，主要从事微流体摩擦与润滑研究.
Supported by:
国家重点基础研究发展计划资助项目( 2003 CB716205 )

摘要/Abstract

摘要： 通过编制适用于纳米级气膜润滑的数值算法，对正压和负压两种类型的磁头结构进行了数值分析，探讨了磁头结构中各个部分对磁头/磁盘系统的影响，以期为磁头表面结构的优化设计提供理论依据.研究表明:对于正压型磁头结构，气膜承载力和最大压力的位直对系统特性有着重要的影响，可通过改变滑轨结构分布来减小这两项性能参数;对于负压型磁头结构，可以通过改变对负压产生明显影响的结构部分来增大负压力的区域，以此消弱正压力的作用;此外，在设计磁头结构时不能忽略气膜刚度的影响，大的气膜刚度对磁头飞行的稳定性起着重要的作用.

关键词: 磁头/磁盘系统, 硬盘驱动器, 表面结构, 气体润滑

Abstract:

In order to lay a theoretical foundation for the optimized design of air-bearing surface (ABS) , a numerical algorithm for the nano-sized gas lubrication is programmed to analyze the ABSs of the positive and negative magnetic heads , and the inf1uences of ABS on the performance of magnetic head/ disk system are investigated. The results indicate that , for the positive magnetic head , the loading points of the maximum pressure and the gas load capacity play a significant role in the performance of the system , and the change of the slider configuration may decrease the maximum pressure and the gas load capacity j while for the negative magnetic head , rhe negative pressure region can be increased by altering those structures that exert obvious influence on the negative pressure , thus weakening the effect of the positive pressure. In addition , the gas stiffness cannot be ignored in the design of the hard disk drive system , and high gas stiffness contributes significantly to the stability of the system.

Key words: magnetic head/ disk system, hard disk drive, air-bearing surface, gas lubrication

牛荣军黄平. 磁头表面结构对硬盘驱动器气膜润滑特性的影响[J]. 华南理工大学学报（自然科学版）, 2007, 35(8): 38-43.

Niu Rong-jun Huang Ping. Influence of Air-Bearing Surface on Gas Lubrication Performances of Hard Disk Drive[J]. Journal of South China University of Technology (Natural Science Edition), 2007, 35(8): 38-43.