A study of shock-resistance design of suspension subjected to impulsive excitation

Author

Lee, Sung Jin ; Hong, Soon Kyo ; Lee, Jang Moo

Author_Institution

Opto-Mechatronics Lab., Samsung Electron. Co., South Korea

Volume

37

Issue

2

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

826

Lastpage

830

Abstract

The transient response of a head/disk interface in a nonoperating hard disk drive is investigated theoretically, subjected to half-sine shock pulse in the axial directions. The equations of motion are driven by Hamilton´s principle. To get the solution, the assumed mode approximation is used and then the Galerkin method is applied. Numerical results are obtained using the Runge-Kutta method. The purpose of this analytical model is to try to quantitatively describe the dynamics of the head/disk system. The results are in good agreement with those of FE simulations and experiments. It is found that the head slap is caused not by disk shock response but by suspension dynamic behavior dominantly, where the head is on a parking zone. Parametric study of suspension design is made to find out the optimal value for increasing the shock resistance of a disk drive

Keywords

Galerkin method; Runge-Kutta methods; disc drives; finite element analysis; hard discs; impulse testing; shock measurement; transient response; FE simulations; Galerkin method; Hamilton´s principle; Runge-Kutta method; axial directions; half-sine shock pulse; head slap; head/disk interface; impulsive excitation; mode approximation; nonoperating hard disk drive; parking zone; shock-resistance design; suspension dynamic behavior; transient response; Acceleration; Aerodynamics; Analytical models; Assembly; Electric shock; Equations; Hard disks; Moment methods; Surface resistance; Transient response;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.917624

Filename

917624