HGA流体起因振動の温度特性(S62-2 機構・制御(2),S62 情報機器コンピュータメカニクス)

概要

論文の詳細を見る
Reduction of windage, or flow induced vibration of the head slider in the off track direction, is very important issue to increase the track density of hard disk drives (HDDs). New head gimbal assembly (HGA) which is designed to reduce mass and to improve the windage for ramp load/unload 10-krpm 3.5type HDD has been developed. The windage of the new HGA was measured by using laser Doppler vibrometer in the temperature-controlled spin stand. The windage peaks were mainly located at 6kHz(T1), 11kHz (T2) and 15kHz (S1). Thermal effect on these frequencies was tp reduce frequencies by less than 1kHz. The windage of T1 mode was increased at 70℃, but the total windage from 2 to 20kHz was almost same. Stainless steel constrain plate reduced the total windage by 30% compared with polyimide one. Thermal characteristics of the new HGA were small enough to use for the HDDs.
社団法人日本機械学会の論文
2004-09-04