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Numerical Analysis on Dynamic Characteristics of Flying Magnetic Head With Ultra Thin Spacing

[+] Author Affiliations
Hua-ping Yao, Yang-zhi Chen, Huang Ping

South China University of Technology, Guangzhou, China

Paper No. IJTC2009-15151, pp. 205-207; 3 pages
doi:10.1115/IJTC2009-15151
From:
  • ASME/STLE 2009 International Joint Tribology Conference
  • ASME/STLE 2009 International Joint Tribology Conference
  • Memphis, Tennessee, USA, October 19–21, 2009
  • Conference Sponsors: Tribology Division
  • ISBN: 978-0-7918-4895-1 | eISBN: 978-0-7918-3862-4
  • Copyright © 2009 by ASME

abstract

Numerical analysis of the dynamic characteristics of a magnetic head with ultra-thin spacing is presented. The dynamic response of the air film is analyzed with the momentum equations and the time-dependent modified Reynolds equation based on the FK-Boltzmann modified model. The pressure distribution is numerically calculated by using an up-wind scheme for a very large bearing number with the finite difference method, and a harmonic average method is used for calculating the flux factor with abrupt change of film thickness. Then, the dynamic characteristics are analyzed in time domain. The numerical results show that under an external motivation the significant vibration is produced in the height direction and in the pitch direction, but the slider is capable of returning to the equilibrium position very quickly.

Copyright © 2009 by ASME

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