Flow-Induced Vibration Reduction for Hard Disk Drive with a Window Spoiler

As the track density of hard disk drives is increased, ways to suppress flow-induced vibration such as vibration of the disk and arm, are needed. For practical application, such countermeasures should not increase power consumption. We have developed a “window spoiler” with wings, each having a larg...

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Bibliographic Details
Published inJournal of Advanced Mechanical Design, Systems, and Manufacturing Vol. 4; no. 4; pp. 756 - 763
Main Authors IKEGAWA, Masato, MUKAI, Hiroshi
Format Journal Article
LanguageEnglish
Published The Japan Society of Mechanical Engineers 01.01.2010
Subjects
Countermeasures
Density
Design engineering
Disk drives
Disks
Flow Induced Vibration
Hard Disk Drive
Particle Image Velocimetry
Power consumption
Spoiler
Spoilers
Vibration
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Summary:As the track density of hard disk drives is increased, ways to suppress flow-induced vibration such as vibration of the disk and arm, are needed. For practical application, such countermeasures should not increase power consumption. We have developed a “window spoiler” with wings, each having a large hole and the same outer dimensions as an original spoiler. In experiments, the window and metamorphosed two-parallel-beam spoilers more effectively decreased the average downstream flow velocity than the original spoiler without holes thereby reducing the disk flutter by 8-10 %. This effect was due to increased drag occurring when there was sufficient distance between the two beams in a tandem arrangement.
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ISSN:1881-3054
1881-3054
DOI:10.1299/jamdsm.4.756