NDLI: Numerical Analysis of Head Disk Interface Response During Operational Shock With Disk-Ramp Contact

Content Provider	IEEE Xplore Digital Library
Author	Liping Li Bogy, D.B.
Copyright Year	1965
Abstract	In hard disk drives (HDDs), the ramp load/unload (LUL) technology has proved to be a better alternative to the contact start-stop approach due to the advantages of increasing areal density and greater durability. However, the application of the LUL ramps in HDDs introduces the possibility of collisions between the disk and ramps since the ramps must slightly overlap the disk's outer radius. Therefore, it is important to study the ramp effects on the HDDs response during a shock. A reduced model of a deformable ramp is developed and implemented into a multi-body operational shock model. Numerical analyses using three different ramp models (no ramp, rigid ramp, and deformable ramp) are carried out to study the HDDs failure dependence on the different ramp models.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	6
Page Count	6
File Size	865027
File Format	PDF
ISSN	00189464
Volume Number	50
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Deformable models Electric shock Atmospheric modeling Force Mathematical model Spinning Numerical models operational shock Numerical analysis Hard disk drive head disk interface operational shock (op-shock) Hard disk drive (HDD) head disk interface (HDI) numerical analysis
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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