An Experimental Study of Head Stack Assembly Dynamics Impact on Head Disc Interaction

Da Peng Zhao; Xiong Fei Wei; Sheng Xiang Chen

doi:10.4028/www.scientific.net/AMM.311.222

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Effects of Heat Transfer and Friction on the Performance of a Miller Cycle Diesel Engine with Considerations of Variable Specific Heats of the Working Fluid
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An Experimental Study of Head Stack Assembly Dynamics Impact on Head Disc Interaction
p.222

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 311An Experimental Study of Head Stack Assembly...

An Experimental Study of Head Stack Assembly Dynamics Impact on Head Disc Interaction

Abstract:

As head-disk clearance has been reduced to nearly 1 nm, air bearing slider dynamic stability becomes increasingly important. This paper presents an experimental study about the coupling effects of Head Gimbal Assembly (HGA) dynamics and arm vibration on Head Disk Interaction (HDI). HDI dynamics was evaluated on a disc with defect. It was found that a much bigger vibration of the slider was observed when suspension local bending mode and arm bending mode are closed to each other than the situation that the two modes are separated. It is proved that both HGA and arm are related to HDI dynamics in a hard disc drive. This study is helpful to characterize system dynamics for robust HDI design.

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Periodical:

Applied Mechanics and Materials (Volume 311)

Pages:

222-225

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.311.222

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Online since:

February 2013

Authors:

Da Peng Zhao, Xiong Fei Wei, Sheng Xiang Chen

Keywords:

ARM, Head Disk Interaction (HDI), Head Gimbal Assembly (HGA)

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