WIT Press


A Computational Study Of Contact Mechanics Between Magnetic Recording Heads And Thin Film Disks

Price

Free (open access)

Paper DOI

10.2495/CON950511

Volume

7

Pages

8

Published

1995

Size

710 kb

Author(s)

N. Okamoto & Y. Ezawa

Abstract

The tribological phenomena between magnetic head sliders and thin film disks are studied during rest, during start-up and shut-down, and during regular operation using numerical simulations. A theoretical model of stic- tion is first derived based on the surface tension of liquid and capillary condensation. Next, a hybrid method of FEM and BEM is developed in or- der to carry out high-precision microscopic contact stress analysis of a disk covered by multi-layer thin films. An impact simulator based on FEM is then presented which considers the air lubricant film to be an elastic spring system determined from the solution of a compressible Reynolds equation. It is found that these simulators can be used to effectively study the tribol- ogy of s

Keywords