We numerically investigated the tracking ability, the dynamic contact and friction forces of a 2-DOF model of a tripad slider over a random wavy disk surface with 1 nm rms value in the near-contact regime. The air bearing was modeled as a lumped spring and dashpot in order to consider a general design methodology of the flying slider in the near-contact regime. The nominal flying height was changed from the contact regime to the near-contact regime. We studied the effects of the front and rear air bearing stiffnesses, the nominal flying height and the friction coefficient on the tracking ability and contact force. As a result, we found that the spacing variation is caused not only by the slider dynamics but also by the micro-waviness of the disk surface and the distance of the contact pad (head-gap) position from the rear air bearing center. We also derived the closed form frequency response functions of the spacing variation to the disk surface waviness. The approximation agreed with the numerical simulation. The effect of the friction coefficient on the tracking ability can be neglected when the flying height is more than 1 nm.
Skip Nav Destination
Article navigation
July 2002
Technical Papers
Dynamic Characteristics and Design Consideration of a Tripad Slider in the Near-Contact Regime
Kohei Iida,
Kohei Iida
Graduate school of Science and Engineering, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Search for other works by this author on:
Kyosuke Ono, Professor,
Kyosuke Ono, Professor
Department of Mechanical and Control Engineering, Tokyo Institute of Technology
Search for other works by this author on:
Masami Yamane
Masami Yamane
Graduate school of Science and Engineering, Tokyo Institute of Technology
Search for other works by this author on:
Kohei Iida
Graduate school of Science and Engineering, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
Kyosuke Ono, Professor
Department of Mechanical and Control Engineering, Tokyo Institute of Technology
Masami Yamane
Graduate school of Science and Engineering, Tokyo Institute of Technology
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division May 4, 2001; revised manuscript received November 2, 2001. Associate Editor: G. G. Adams.
J. Tribol. Jul 2002, 124(3): 600-606 (7 pages)
Published Online: May 31, 2002
Article history
Received:
May 4, 2001
Revised:
November 2, 2001
Online:
May 31, 2002
Citation
Iida, K., Ono, K., and Yamane, M. (May 31, 2002). "Dynamic Characteristics and Design Consideration of a Tripad Slider in the Near-Contact Regime ." ASME. J. Tribol. July 2002; 124(3): 600–606. https://doi.org/10.1115/1.1467089
Download citation file:
Get Email Alerts
Static Characteristics of Hybrid Water-Lubricated Herringbone Groove Journal Bearing
J. Tribol (April 2025)
Related Articles
Analysis of Bouncing Vibrations of a 2-DOF Model of Tripad Contact Slider Over a Random Wavy Disk Surface
J. Tribol (January,2001)
Design and Dynamics of Flying Height Control Slider With Piezoelectric Nanoactuator in Hard Disk Drives
J. Tribol (January,2007)
Related Proceedings Papers
Related Chapters
Surface Analysis and Tools
Tribology of Mechanical Systems: A Guide to Present and Future Technologies
How the Worm Gear Developed through Time
Design and Application of the Worm Gear
Materials
Design and Application of the Worm Gear