The vibration characteristics of a thermal fly-height control (TFC) head slider in the proximity and asperity contact regimes attract much attention, because the head–disk spacing (HDS) must be less than 1 nm in order to increase the recording density in hard disk drives. This paper presents a numerical analysis of the microwaviness (MW)-excited vibrations in the flying head slider during the touchdown (TD) process. We first formulate the total force applied to the TFC head slider as a function of the HDS, based on rough-surface adhesion contact models and an air-bearing force model. Then, the MW-excited vibrations of a single-degree-of-freedom (DOF) slider model at TD are simulated by the Runge–Kutta method. It is found that, when the MW amplitude is less than the spacing range of static instability in the total force, the slider jumps to a contact state from a near-contact or mobile-lubricant-contact state. It then jumps to a flying state even when the head surface is protruded further by increasing the TFC power. When the MW amplitude is relatively large, a drastically large spacing variation that contains a wide range of frequency components below 100 kHz appears in the static unstable region. These calculated results can clarify the mechanisms behind a few peculiar experimental phenomena reported in the past.
Skip Nav Destination
Article navigation
November 2017
Research-Article
Analysis of Microwaviness-Excited Vibrations of a Flying Head Slider in Proximity and Asperity Contact Regimes
Kyosuke Ono
Kyosuke Ono
Tokyo Institute of Technology,
2 Chome-12-1 Ookayama,
Meguro, Tokyo 152-8550, Japan
2 Chome-12-1 Ookayama,
Meguro, Tokyo 152-8550, Japan
Search for other works by this author on:
Kyosuke Ono
Tokyo Institute of Technology,
2 Chome-12-1 Ookayama,
Meguro, Tokyo 152-8550, Japan
2 Chome-12-1 Ookayama,
Meguro, Tokyo 152-8550, Japan
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received October 7, 2016; final manuscript received February 6, 2017; published online June 15, 2017. Assoc. Editor: Frank Talke.
J. Tribol. Nov 2017, 139(6): 062001 (13 pages)
Published Online: June 15, 2017
Article history
Received:
October 7, 2016
Revised:
February 6, 2017
Citation
Ono, K. (June 15, 2017). "Analysis of Microwaviness-Excited Vibrations of a Flying Head Slider in Proximity and Asperity Contact Regimes." ASME. J. Tribol. November 2017; 139(6): 062001. https://doi.org/10.1115/1.4036174
Download citation file:
Get Email Alerts
Related Articles
Improved Analysis of Unstable Bouncing Vibration and Stabilizing Design of Flying Head Slider in Near-Contact Region
J. Tribol (January,2007)
Analysis of Contact Characteristics of Small Rough Surfaces Taking Bulk Deformation and Meniscus Force Into Consideration
J. Tribol (July,2007)
Experimental and Analytical Study of Bouncing Vibrations of a Flying Head Slider in a Near-Contact Regime
J. Tribol (April,2005)
Liquid-Mediated Adhesion at the Thin Film Magnetic Disk/Slider Interface
J. Tribol (April,1990)
Related Proceedings Papers
Related Chapters
Materials for Micro and Nanotribology: Liquid Crystals, Fluid Fims and Other Lubricants
Micro and Nanotribology
Contact Laws
Contact in Structural Mechanics: A Weighted Residual Approach
Numerical Simulation of the Air Bearing Film in the Head-Disk Interface of Hard Disk Drives by Using Meshless Locall Petrov-Galerkin Method
International Conference on Mechanical and Electrical Technology 2009 (ICMET 2009)