Particles in the head disk interface may cause large contact forces acting on the slider as well as thermal asperities in the read/write signal. This is especially true for the close spacing required for . In this paper, a three-body contact model is employed to study the effects of a particle entrapped between a slider and a disk. A criterion for determining a particle’s movement pattern is proposed. The study of particles in the head disk interface shows that large particles are likely to slide between the slider and disk interface, and the particles going through the trailing pad of an air bearing slider cause severe contact forces on the slider and generate large heat sources. The frictional heating study shows that the temperature around the magnetoresistive head increases to about for a single particle passing through the trailing pad of the slider. The effects of the particle size, disk material, and friction coefficient are also studied. It is found that the disk and slider materials and the frictional coefficient between the materials largely affect the contact force acting on the slider by an entrapped particle as well as the temperature rise at its contact region. It is also found that the friction coefficient largely affects a particle’s movement pattern in the head disk interface.
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January 2008
Research Papers
Contact Force and Frictional Heating due to “Large” Particles in the Head Disk Interface
Xinjiang Shen,
Xinjiang Shen
Computer Mechanics Laboratory, 5146 Etcheverry Hall,
University of California at Berkeley
, Berkeley, CA 94720-1740
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David B. Bogy
David B. Bogy
Computer Mechanics Laboratory, 5146 Etcheverry Hall,
University of California at Berkeley
, Berkeley, CA 94720-1740
Search for other works by this author on:
Xinjiang Shen
Computer Mechanics Laboratory, 5146 Etcheverry Hall,
University of California at Berkeley
, Berkeley, CA 94720-1740
David B. Bogy
Computer Mechanics Laboratory, 5146 Etcheverry Hall,
University of California at Berkeley
, Berkeley, CA 94720-1740J. Tribol. Jan 2008, 130(1): 011015 (7 pages)
Published Online: January 18, 2008
Article history
Received:
March 9, 2004
Revised:
July 11, 2007
Published:
January 18, 2008
Citation
Shen, X., and Bogy, D. B. (January 18, 2008). "Contact Force and Frictional Heating due to “Large” Particles in the Head Disk Interface." ASME. J. Tribol. January 2008; 130(1): 011015. https://doi.org/10.1115/1.2805438
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