Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Deformation Analysis and Experimental Verification of DVD Optical Disc Holders

DVD 광 디스크 홀더의 변형 해석 및 실험적 검증

  • 김진곤 (대구가톨릭대학교 기계자동차공학부) ;
  • 박용국 (대구가톨릭대학교 기계자동차공학부)
  • Published : 2003.05.01
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Abstract

To ensure the reliability of DVDR-P and DVD-ROM, it is imperative to remedy the unrecoverable creep deformation and/or relaxation of the holding force of an optical disc holder. To predict the deformation of an optical disc holder, a deformation analysis of an 80 mm optical disc holder considering the creep characteristics of 3 plastic materials has been conducted. Subsequently, the results by this Finite Element Analysis (FEA) are experimentally verified. A disc holder inserted in a cartridge case is kept in a chamber of $60^{\circ}C$ with 90 % humidity for 24 hours. The arm span and the holding force of the disc holder are measured after being left for another 24 successive hours at a room temperature and under normal humidity. The predicted results by FEA are in good agreement with experimentally measured values.

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References

  1. Saegusa, S., Yoshida, S., 'Mechatronics in optical head mechanism,' Int. Journal of Japan Soc. Precision Engineering, Vol. 31, No. 3, pp. 172-176, 1997
  2. Han, C. S., Kim, S. H., 'Design Parameters of Optical Pickup Actuator for the Next Generation,' J. of the KSPE, Vol. 18, No. 1, pp. 82-88, 2001
  3. Song, T. S., et al., 'Technical Trend of Optical Information Storage Device,' J. of the KSPE, Vol. 18, No. 4, pp. 25-36, 2001
  4. Han, C. S., Kim, S. H., 'Design and Analysis of a Lever actuator for the Optical Disk Pickup,' J. of the KSPE, Vol. 19, No. 9, pp. 41-50, 2002
  5. Lee, M. G.;Gweon, D. G. Optimal Design of a Fine Actuator for Optical Pick-up J. of the KSME A
  6. Lee, D. Y., Hwang, J. H., Choa, S. H., 'Nano-Contamination in Information Storage Device,' J. of the KSPE, Vol. 19, No. 8, pp. 26-33, 2002
  7. I-DEAS Course Guide, Structural Dynamics Research Corporation
  8. Engineering Thermoplastics Basic Design Manual, Dow Chemical Company
  9. Wolfram, S., Mathematica, second edition, Addison Wesley, 1991