A finite element model of a hard disk drive (HDD) is developed to investigate the transient response of an operational HDD subject to shock and vibration. The air bearing stiffness of the head disk interface is determined from a finite element solution of the Reynolds equation and approximated with linear springs. The structural response is analyzed for several types of sliders with a wide range of air bearing stiffness. Results show the response of the head-disk interface subject to shock and the modes excited by vertical and lateral vibrations of the HDD.

Issue Section:
Technical Papers
Keywords:
hard discs, disc drives, machine bearings, transient response, elasticity, vibrational modes, impact (mechanical), finite element analysis
Topics:
Air bearings, Disks, Finite element analysis, Horizontal directional drilling, Shock (Mechanics), Stiffness, Vibration, Finite element model
1.
Allen
,
A. M.
, and
Bogy
,
D. B.
, 1996, “Effects of Shock on the Head-Disk Interface,” IEEE Trans. Magn., 32(5).
2.
Edwards
,
J. R.
, 1999, “Finite Element Analysis of the Shock Response and Head Slap Behavior of a Hard Disk Drive,” IEEE Trans. Magn., 35(2).
3.
Aristegui
,
J. L.
, and
Geers
,
T. L.
,
2000
, “
Shock Analysis of a Disk-Drive Assembly
,”
Journal of Information Storage and Processing Systems
,
2
, pp.
25
–
31
.
4.
Zeng, Q. H., and Bogy, D. B., 2000, “Numerical Simulation of Shock Response of Disk-Suspension-Slider Air Bearing Systems in Hard Disk Drives,” submitted for publication.
5.
Wahl, M. H., 1994, “Numerical and Experimental Investigation of the Head/Disk Interface.”
6.
Weissner, S., 2001, “Numerical and Experimental Investigation of the Load/Unload Behavior of Subambient Pressure Hard Disk Drive Sliders.”
7.
Introduction to Pro/Engineer, 1998, Parametric Technology Corporation.
8.
Hypermesh 2.0 Documentation, 1995, Altair Computing, Inc.
9.
Hallquist, J., 1998, LS-Dyna Users Manual.
10.
Hallquist, J., 1998, LS-Dyna Theory Manual.
11.
Hardie
,
C.
,
Menon
,
A.
,
Crane
,
A.
, and
Egbert
,
D.
, 1994, “Analysis and Performance Characteristics of the Seagate Advanced Air Bearing Slider,” IEEE Trans. Magn., 30(2).
12.
Wada
,
Y.
,
Roppongi
,
T.
, and
Sato
,
I.
, 1999, “Flying Characteristics of Shallow Step Pads Slider for Low Flying,” IEEE Trans. Magn., 35(5).
13.
Zeng
,
Q. H.
, and
Bogy
,
D. B.
, 1999, “Stiffness and Damping Evaluation of Air Bearing Sliders and New Designs with High Damping,” ASME J. Tribol., 121.
14.
Zhang, J., and Talke, F. E., “Sensitivity Analysis of Pico and Femto Sliders.”
Copyright © 2003
 by ASME
You do not currently have access to this content.