Abstract

In magnetic storage devices, heads are designed so that a thin air film (air bearing) is generated between the head and the magnetic storage device in the read/write process. In this way, the head-device contact only takes place at the initial and final moment. Thus, once a velocity value is reached, the air film is build up so that the hydrodynamic load balances the external load. Hydrodynamic and elastohydrodynamic lubrication theories govern this kind of processes. In the case of hard disk devices the air hydrodynamic displacement is governed by a nonlinear compressible Reynolds equation and the elastic effects are neglected. In tapes and floppy disks (flexible storage media) the elastohydrodynamic model consists of a coupled system based on the compressible Reynolds equation for air pressure and a rod model for the tape deflection.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.