scholarly journals A5.3 - Velocity Measurements of Gap Flows at a Computer Hard Disk Model

2011 ◽  
Author(s):  
J. Czarske ◽  
L. Büttner ◽  
K. Shirai ◽  
S. Obi
Keyword(s):  
Hard Disk ◽  
Velocity Measurements ◽  
Disk Model

Effect of Spinning Disk–Parking Ramp Collison on the Operational Shock Performance of a Mobile Hard Disk Drive

2010 ◽  
Author(s):  
Rahul Rai ◽  
David B. Bogy
Keyword(s):  
Hard Disk Drives ◽  
Excitation Frequency ◽  
Hard Disk ◽  
Disk Drive ◽  
Disk Model ◽  
Disk Interface ◽  
Spinning Disk ◽  
Reliable Performance ◽  
Shock Resistance ◽  
Operational Shock

With the introduction of netbook computers two years ago, the demand for hard disk drives (HDD) for mobile applications has greatly increased. High shock resistance is an important requirement for the reliable performance of HDDs in such applications. In this paper we conduct a numerical investigation to understand the failure mechanism of the head disk interface (HDI) during an operational shock. Simulation results suggest that the excitation frequency spectrum has a strong influence on HDI failure. We also investigate the effect of the parking or load unload (LUL) ramp on shock resistance using a new spinning disk model. The results suggest that asymmetric excitations induced by ramp-disk collision causes failure of the HDI at lower shock magnitudes. This study can be helpful in improving the design of HDD components and air bearing sliders (ABS) for better shock performance.

Highly spatially resolving laser Doppler velocity measurements of the tip clearance flow inside a hard disk drive model

2010 ◽  
Vol 50 (3) ◽  
pp. 573-586 ◽  
Author(s):  
Katsuaki Shirai ◽  
Yusuke Yaguchi ◽  
Lars Büttner ◽  
Jürgen Czarske ◽  
Shinnosuke Obi
Keyword(s):  
Hard Disk Drive ◽  
Hard Disk ◽  
Disk Drive ◽  
Tip Clearance ◽  
Laser Doppler ◽  
Doppler Velocity ◽  
Velocity Measurements ◽  
Tip Clearance Flow ◽  
Clearance Flow ◽  
Drive Model

Benzene diffusion on graphite described by a rough hard disk model

Carbon ◽  
2014 ◽  
Vol 79 ◽  
pp. 183-191 ◽  
Author(s):  
I. Calvo-Almazán ◽  
E. Bahn ◽  
M.M. Koza ◽  
M. Zbiri ◽  
M. Maccarini ◽  
...  
Keyword(s):  
Hard Disk ◽  
Disk Model
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