Microsystem Technologies

, Volume 19, Issue 9–10, pp 1393–1399

Numerical investigation of slider dynamics induced by contacts with disk asperities

  • Wenping Song
  • Pablo A. Salas
  • Andrey Ovcharenko
  • Hao Zheng
  • Frank E. Talke
Technical Paper


A time dependent Reynolds equation simulator combined with a finite element-based transient contact model between a slider and a disk asperity is used to study slider dynamics induced by contacts with disk asperities. The flying height change at the trailing edge of the slider is investigated as a function of asperity height, asperity diameter, and the spacing between the thermal protrusion of a thermal-flying control slider and a disk asperity. The effect of material properties of the disk asperities is studied. Slider vibrations corresponding to the first and the second pitch modes are excited by disk asperities.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Wenping Song
    • 1
    • 2
  • Pablo A. Salas
    • 2
  • Andrey Ovcharenko
    • 3
  • Hao Zheng
    • 3
  • Frank E. Talke
    • 2
  1. 1.Harbin Institute of TechnologyHarbinChina
  2. 2.Center for Magnetic Recording ResearchUniversity of CaliforniaSan DiegoUSA
  3. 3.Western Digital CorporationSan JoseUSA

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