Title :
Study of Shock Response of Operational HDD with Discrete Stiffness/Damping
Author :
Li, H. ; Liu, J. ; Yoshida, S. ; Yu, S.K. ; Liu, B.
Author_Institution :
Storage Mech. Lab., Hitachi Asis Ltd.
fDate :
Nov. 29 2006-Dec. 1 2006
Abstract :
A discrete method is used to determine the local air bearing stiffness/damping at each air bearing pad (positive) and recess region (negative). The finite element model of the HDD with such stiffness/damping in the form of springs is used to study the shock response of disk driver at a half-sinusoidal acceleration shock (1 ms/63 g). Results show the by increasing 5 times of local stiffness on top-trailing pad, the response after 4 ms is changed much due to the response phase is little shifted.
Keywords :
damping; disc drives; elastic constants; finite element analysis; hard discs; machine bearings; springs (mechanical); HDD; air bearing discrete stiffness; damping; disk driver; finite element model; half-sinusoidal acceleration shock; springs; Acceleration; Asia; Damping; Electric shock; Finite element methods; History; Laboratories; Memory; Springs; Transient analysis; Disk Driver; Finite Elements; Shock; air bearing;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2006
Conference_Location :
Singapore
Print_ISBN :
1-4244-0863-6
DOI :
10.1109/APMRC.2006.365945
