Transactions of the Society of Information Storage Systems (정보저장시스템학회논문집)

The Society of Information Storage Systems (정보저장시스템학회)
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An Analysis of Damping Coefficients for Capillary Type Orifices on a Curved Stabilizer used in a High Speed Rotating Flexible Optical Disk System

고속 회전 유연 디스크 시스템에서 곡면 안정기에 가공된 모세관형 오리피스의 감쇠계수 해석

  • 송기욱 (대학원, 연세대학교 기계공학과) ;
  • 임윤철 (정보저장기기연구센터, 연세대학교)
  • Received : 2011.03.14
  • Accepted : 2011.03.24
  • Published : 2011.03.25
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Abstract

In the last couple of years, the flexible optical disk(FOD) system that consists of a thin polycarbonate(PC) film of 95 ${\mu}m$ thick, a rigid stabilizer, and a high speed spindle motor has been spot-lighted as the next-generation optical system for archival use of digital data. The air film between the rotating disk and stabilizer provides a means for damping out the lateral disk vibrations. However, its damping-capability drops significantly as the rotational speed of the disk exceeds a specific limit and, eventually, the disk vibration propagates inward causing the whole span of the disk exhibits large vibration amplitudes. Based on the numerical simulations as well as the experimental results, the present work aims to evaluate the damping coefficient of the air-film near the outer region of the disk where the capillary type orifices are applied to the edge of the curved stabilizer.

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References

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