Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Automation of Feature Modeling for HDD Fluid Dynamic Bearing Design

HDD용 유체베어링 설계를 위한 형상 모델링의 자동화

  • 이남훈 (성균관대학교 기계공학부) ;
  • 권정민 (성균관대학교 기계공학부) ;
  • 구자춘 (성균관대학교 기계공학부)
  • Published : 2005.02.01
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Abstract

As functional requirement of massive digital information storage devices are on a trend for the higher data transfer rate and lower cost, many different technical efforts are being tested and implemented in the industry. FDB(fluid dynamic bearing) is one of the major breakthroughs in rotor design in terms of TMR(track misregistration) budget. Although FDB analysis based on Reynolds' equation is well established and popularly being used for FDB design especially for the estimation of bearing stiffness, there are obvious limitations in the approach due to the inherent assumptions. A generalized analysis tool employing the full Navier-Stokes equation and the energy balance is to be beneficial for detailed FDB design. In this publication, an efficient geometry modeling method is presented that provides fully integrated inputs for general FVM/FDM(finite volume method/ finite difference method) codes. By virtue of the flexibility of the presented method, many different detailed FDB design and analysis are carried over with ease.

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References

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  1. Non-contact measurement method of mechanical stiffness for high revolutionary speed precision fluid dynamic bearing rotors vol.16, pp.1-2, 2010, https://doi.org/10.1007/s00542-009-0849-7
  2. Nonsymmetric Groove Pattern Design for Precise Micro-Spindles vol.326-328, pp.1662-9795, 2006, https://doi.org/10.4028/www.scientific.net/KEM.326-328.1595