Shock-proof design of head disk assembly subjected to impulsive excitation

回転磁気ディスク・ヘッド連成系の衝撃応答ならびにヘッドの耐衝撃設計について

Shock-proof design of head disk assembly subjected to impulsive excitation

Creators Jiang Zhong-wei

Creators Takashima Kazu

Creators Chonan Seiji

This paper presents a study of the transient response of HDA subjected to a half-sine shock pulse in the axial and pitching directions. The solution is obtained using the multi-model expansion approximation and applying the Galerkin method of the resulting equations. Numerical results are obtained using the Newmark βmethod for a 3.5'' hard disk-head system. It is found that the relative distance between the disk and the head becomes maximum when the input duration γ is about 1.5 times the natural half-period of the fundamental (0,0) mode. Results also show that the air film stiffness between the head and the disk should be high in order to realize a shock-proof head.

Copyright: 日本機械学会 (The Japan Society of Mechanical Engineers)()

[ISSN]0387-5024

[NCID]AN00187463

[isVersionOf] [URI]http://www.jsme.or.jp/publish/ronbun/