Numerical modelling of sub-surface stress in magnetic data tape heads due to the dynamic contact with a tape

The stress field at the subsurface of the ceramic used as a tape-bearing surface (TBS) in magnetic head construction is calculated by means of numerical methods taking into account roughness and friction forces at the head to tape interface (HTI). A two-dimensional model confirms the purely elastic...

Full description

Saved in:
Bibliographic Details
Published in:Tribology international 2002-03, Vol.35 (3), p.171-184
Main Authors: Sourty, E., Sullivan, J.L., Bijker, M.D.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Ceramic wear
Chemical industry and chemicals
Electronics
Exact sciences and technology
Friction, wear, lubrication
General studies
Head to tape interface
Linear tape recording
Machine components
Magnetic and optical mass memories
Mechanical engineering. Machine design
Numerical modelling
Storage and reproduction of information
Technical ceramics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The stress field at the subsurface of the ceramic used as a tape-bearing surface (TBS) in magnetic head construction is calculated by means of numerical methods taking into account roughness and friction forces at the head to tape interface (HTI). A two-dimensional model confirms the purely elastic character of the contact. However, only a three-dimensional model allows a quantitative interpretation, and thus to estimate the real area to apparent area of contact ratio—in agreement with a previous formal calculation—as well as the depth of the maximum von Mises stress—i.e. the depth at which a crack is more likely to form and extend—near 30 nm, comparable to the pullout depth observed at the surface of the ceramic used in actual heads.
ISSN:0301-679X
1879-2464
DOI:10.1016/S0301-679X(01)00113-X