Jiang Zhongwei
Affiliate Master
Yamaguchi University
Shock-proof design of head disk assembly subjected to impulsive excitation
JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing Volume 38 Issue 3
Page 411-419
published_at 1995
Title
Shock-proof design of head disk assembly subjected to impulsive excitation
Creator Keywords
vibration of rotating body
transient response
natural frequency
head disk assembly
half-sine shock pulse
shock-proof design
galerkin method
newmark β method
This paper reports a study on the transient response of a head disk assembly (HDA) subjected to a half-sine shock pulse in the axial and pitching directions. The solution is obtained using the multi-modal expansion approximation and applying the Galerkin method to the resulting equations. Numerical results are obtained by the Newmark β method for a 3.5" hard disk-head system. It is found that the relative distance between the head and the disk reduces to the minimum when the input duration τ is about 1. 5 times the natural half-period of the fundamental (0, 0) mode. Results obtained also show that the shock-proof head satisfies (1/2π) (k/m)1/2=f00, where k is the stiffness of the head arm, m the head mass and f00 the (0, 0) mode frequency of the rotating disk, and that the head slider should be designed so that the assembled system of the head and the disk has a high air-film stiffness.
Languages
eng
Resource Type
journal article
Publishers
日本機械学会
Date Issued
1995
Rights
Copyright: 日本機械学会(The Japan Society of Mechanical Engineers)()
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]1340-8062
[NCID]AA10898309
[isVersionOf]
[URI]http://www.jstage.jst.go.jp/browse/jsmec/-char/ja/
Schools
大学院理工学研究科（工学）