Effects of thrust hydrodynamic bearing stiffness and damping on disk-spindle axial vibration in hard disk drives

2004 ◽  
Vol 10 (4) ◽  
pp. 338-344 ◽  
Author(s):  
T. Jintanawan ◽  
C.-P. Roger Ku ◽  
J. Zhu
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Axial Vibration ◽  
Hydrodynamic Bearing ◽  
Bearing Stiffness ◽  
Stiffness And Damping

An Efficient FE Analysis for Complex Low Flying Air-Bearing Slider Designs in Hard Disk Drives—Part I: Static Solution

2009 ◽  
Vol 131 (3) ◽  
Author(s):  
Puneet Bhargava ◽  
David B. Bogy
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Static Solution ◽  
Flying Height ◽  
Air Bearing ◽  
Pressure Gradients ◽  
Disk Drives ◽  
Bearing Stiffness ◽  
Novel Method ◽  
Mesh Refinements

Prediction of the steady state flying height and attitude of air-bearing sliders in hard disk drives via simulations is the basis of their design process. Over the past few years air-bearing surfaces have become increasingly complex incorporating deep etches and steep wall profiles. In this paper we present a novel method of solving the inverse problem for air-bearing sliders in hard disk drives that works well for such new designs. We also present a new method for calculating the static air-bearing stiffness by solving three linear systems of equations. The formulation is implemented, and convergence studies are carried out for the method. Mesh refinements based on flux jumps and pressure gradients are found to work better than those based on other criteria.

Design of hydrodynamic bearing for mobile hard disk drives

2005 ◽  
Vol 41 (2) ◽  
pp. 741-743 ◽  
Author(s):  
T. Asada ◽  
H. Saitou ◽  
D. Itou
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Hydrodynamic Bearing

Experimental Evaluation of Stiffness and Damping of Slider-Air Bearings in Hard Disk Drives

1999 ◽  
Vol 121 (1) ◽  
pp. 102-107 ◽  
Author(s):  
Q. H. Zeng ◽  
D. B. Bogy
Keyword(s):  
Dynamic Characteristics ◽  
Dynamic Properties ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Air Bearing ◽  
Disk Drives ◽  
Air Bearings ◽  
Transient Responses ◽  
Load Beam ◽  
Stiffness And Damping

The system identification method was applied to experimentally investigate the dynamic characteristics of slider-air bearings in hard disk drives. The transient responses of sliders were measured, and the modal frequencies and damping ratios that are directly related to the stiffness and damping of the bearings were obtained by data processing and parameter identification. The dynamic property of a particular advanced air bearing (AAB) slider was measured and compared with simulation results. It was found that, contrary to usual perception, the suspension assembly significantly affects the dynamic characteristics of the air bearings. Contacts between the load beam and the flexure may introduce a larger damping and nonlinear property. The preliminary results also show that the proposed method is robust for experimentally evaluating the dynamic properties of slider-air bearings.

Design of Hydrodynamic Bearing for Miniature Hard Disk Drives

2007 ◽  
Vol 43 (9) ◽  
pp. 3721-3726 ◽  
Author(s):  
T.. Asada ◽  
H.. Saitou ◽  
D.. Itou
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Hydrodynamic Bearing

scholarly journals Examining the feasibility of the urban mining of hard disk drives

2020 ◽  
Vol 248 ◽  
pp. 119216
Author(s):  
Laura Talens Peiró ◽  
Alejandra Castro Girón ◽  
Xavier Gabarrell i Durany
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Urban Mining

scholarly journals Evaluation of Vibration Characteristics of Suspensions for Hard Disk Drives and Reducing the Vibration by Using Viscoelastic Dampers.

2002 ◽  
Vol 68 (667) ◽  
pp. 720-727 ◽  
Author(s):  
Hiromitsu MASUDA ◽  
Toshihiko SHIMIZU ◽  
Mikio TOKUYAMA ◽  
Haruhide TAKAHASHI ◽  
Kousaku WAKATSUKI ◽  
...  
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Vibration Characteristics ◽  
Disk Drives ◽  
Viscoelastic Dampers

Feasibility study of thermal positioning control actuator for hard disk drives

2012 ◽  
Vol 18 (9-10) ◽  
pp. 1383-1388 ◽  
Author(s):  
Masaru Furukawa ◽  
Junguo Xu ◽  
Jin Liu ◽  
Jianhua Li ◽  
Shoya Nosaki ◽  
...  
Keyword(s):  
Feasibility Study ◽  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Positioning Control

Analysis of Electrical Resonance of a Hard Disk Drives Suspension Interconnect and Invasion Into Read Signal Path

2014 ◽  
Vol 50 (11) ◽  
pp. 1-4 ◽  
Author(s):  
Nobumasa Nishiyama ◽  
Yuji Soga ◽  
Kazuniro Nagaoka ◽  
Tomohisa Okada ◽  
John T. Contreras ◽  
...  
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Disk Drives ◽  
Electrical Resonance ◽  
Signal Path ◽  
Read Signal
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