磁头润滑面形状对气动力特性的影响

本文采用微分离散差分方法求解滑流条件下的修正Reynolds方程．对于一阶导数间断的物理量——气膜厚度采用高精度保凸性磨光法进行处理．给出了气膜压强分布立体图以及几种因加工误差造成磁头滑块润滑面变形的误差型面的飞升曲线、中心线上压强分布、压力中心和负载随加工误差大小的变化情况，指出了磁头滑块润滑面加工时宁凸勿凹的倾向性意见．

THE INFLUENCES OF DIFFERENT LUBRICATION SURFACE OUTLINES ON GASDYNAMIC FORCES OF MAGNETIC HEAD

The modified Reynolds equation under slip-flow condition is solved in this paper using finite difference method of differential discretion.Smoothest approximation method,with high precision and capacity of keeping concave and convex feature of original outlines,is used to deal with the derivative discontinuity of gas film thickness.The curves of flying height versus disk velocity,the pressure distributions on centre lines of the flying magnetic head slider lubrication surf aces,load and centres of pressure of magnetic heads are presented according with several different outlines and different productive errors of magnetic heads.The analysis of calculation results shows that we could rather select convex surface to be the outline of lubrication surface of magnetic heads.