Lapping control of Hard Disk Drive Heads (I): Modeling

Youping Mei, Kim A. Stelson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Bar lapping is a key process in fabricating computer hard disk drive heads. The purpose is to remove a small amount of material in a way that minimizes the stripe height variation across the bar. This article presents the first part of this study: establishing a method of simulating the material removal process. The Preston model is identified to be a reasonable constitutive relationship relating lapping rate to pressure and relative velocity. A pressure estimation method is established based on the modified beam on elastic foundation model (MBOEF) to incorporate the effect of surface shape. Simulation is conducted based on the proposed constitutive relationship and MBOEF. Results show good agreement with production observations. Hence the simulation model can serve as a tool to identify the structure of the lapping control model in the second part of this study.

Original languageEnglish (US)
Title of host publicationDynamic Systems and Control
Subtitle of host publicationVolume 2
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages8
ISBN (Electronic)9780791826652
StatePublished - 2000
EventASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000 - Orlando, United States
Duration: Nov 5 2000Nov 10 2000

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)


ConferenceASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000
Country/TerritoryUnited States

Bibliographical note

Funding Information:
The authors would like to express their sincere gratitude to the Seagate Technology for its continuous support and funding in this research.

Publisher Copyright:
© 2000 by ASME.


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