Title :
So how hard does a head hit a disk?
Author :
Leo, H.-L. ; Sinclair, G.B.
Author_Institution :
Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
A model which appears to provide improved estimates of representative forces, pressures, etc., during a head/disk collision is presented. This model takes account of asperity deformation and the statistical nature of asperity interaction. What results is a total contact force of the order of 0.2 newtons for a duration of the order of a few microseconds. These values check with physical observations made by others. The model further yields contact areas, expected numbers of contacting asperities, and mean contact pressures. The authors apply the model to a variety of systems to gauge the effects of different incident velocities, alternative slider sizes, varying the interface topography, etc
Keywords :
magnetic disc storage; magnetic heads; mechanical contact; asperity deformation; contact areas; contacting asperities; forces; head/disk collision; interface topography; magnetic disks; magnetic heads; mean contact pressures; model; pressures; total contact force; Computer interfaces; Data storage systems; Deformable models; Disk drives; Magnetic heads; Magnetic memory; Mechanical engineering; Stress; Surfaces; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on