Shock and head slap simulations of operational and nonoperational hard disk drives

Author

Jayson, Eric M. ; Murphy, James M. ; Smith, Paul W. ; Talke, Frank E.

Author_Institution

Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2150

Lastpage

2152

Abstract

A finite-element model of a hard disk drive (HDD) is developed to investigate the response of a HDD to linear and rotary shock impulses. The simulations are performed for both operational and nonoperational HDD models. The operational HDD model uses linear springs to represent the air bearing stiffness of the head-disk interface. The nonoperational HDD model has the magnetic head in the docked position at the inner diameter of the disk. The geometry is developed using a three-dimensional computer aided design (CAD) package and is then imported into a preprocessor. The transient solution is performed using a commercially available finite-element solver.

Keywords

CAD; disc drives; electrical engineering computing; finite element analysis; hard discs; magnetic heads; modal analysis; shock wave effects; transient response; HDD models; air bearing stiffness; docked position; finite-element model; finite-element solver; head slap simulations; head-disk interface; linear shock impulses; linear springs; magnetic head; modal analysis; nonoperational hard disk drives; operational hard disk drives; rotary shock impulses; shock simulations; slider displacement; three-dimensional computer aided design package; transient solution; Actuators; Angular velocity; Disk drives; Electric shock; Finite element methods; Gravity; Hard disks; Magnetic heads; Magnetic levitation; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802800

Filename

1042120