摘要
A liquid lubricated head disk system is introduced. Subjected to high shear rate the rheology of the ultra thin film 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 rheology. 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 slider is simulated and some valuable results are obtained about the static and dynamic characteristics of the liquid lubricated head disk systems.
硬盘系统一般采用气体润滑，以提高使用寿命和读写可靠性．本文讨论了多聚脂流体润滑的ＩＢＭ３３７０ 磁头／ 磁盘系统，以期提高磁记录密度．润滑模型中考虑了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．应用摄动理论建立了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两自由度磁头的动力响应进行了仿真．仿真结果表明，在相同磁头倾角条件下，液膜润滑的磁头／ 磁盘的动力稳定性优于气体润滑的磁头／
