Title :
Dynamic contact with friction of an ultra-low flying head-disk interface with thermal protrusion
Author :
Vakis, A.I. ; Lee, S.-C. ; Polycarpou, A.A.
Author_Institution :
Dept. of Mech. Sci. & Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL
Abstract :
A dynamic two-degree-of-freedom contact with friction model of the head-disk interface (HDI) is presented accounting for slider thermal protrusion and its influence on the HDI dynamics. Using this model, which includes roughness, the applied power to the thermal protrusion is calculated that leads to minimum flying-height modulations. The model predictions are verified by drive-level experimental results.
Keywords :
disc drives; friction; hard discs; magnetic heads; applied power; dynamic two-degree-of-freedom contact; flying-height modulations; friction model; hard-disk drives; slider thermal protrusion; ultralow flying head-disk interface; Ellipsoids; Feedback; Friction; Geometry; Magnetic memory; Predictive models; Rough surfaces; Solid modeling; Surface roughness; Tellurium; dynamic model; head-disk interface; magnetic storage; thermal protrusion;
Conference_Titel :
Magnetic Recording Conference, 2009. APMRC '09. Asia-Pacific
Conference_Location :
Singapore
Print_ISBN :
978-9810-82191-3
DOI :
10.1109/APMRC.2009.4925390
