회전속도 증가에 의한 광디스크의 파괴현상에 관한 연구

A Study on the Fracture Phenomena in Optical Disks Due to Increase of the Rotating Speed

  • 발행 : 2001.06.01

초록

In this study, the fracture phenomena of optical disks are discussed by theoretical and experimental approaches and then some recommendations are presented to prevent the fracture. Linear equations of motion are discretized by using the Galerkin approximation. From the discretized equations, the dynamic responses are computed by the generalized- time integration method. As a fracture criterion for optical disks, the critical crack length is presented. From experimental methods, the fracture procedure is analyzed. The fracture occurs when disks have crack on the inner radius of the disks. Since the crack growth and the fracture result from the stress concentration on the tip of the crack, a measure should be taken to overcome the stress concentration. This problem can be resolved by the structural modification of a disk. This study proposes 3 types of improved optical disks.

키워드

참고문헌

  1. Proceedings of the Royal Society v.99 The Vibration of a Spinning Disk Lamb, H.;Southwell, R.V.
  2. Journal of the Aeronautical Sciences v.29 no.1 The Transverse Vibrations of a Flat Spinning Membrane Simmonds, J.G.
  3. ASME Journal of Engineering for Industry v.89 Free Vibration of Initially Stressed Circular Disks Mote, Jr., C.D.
  4. AIAA Journal v.7 no.10 Free Vibrations of a Centrally Clamped Spinning Circular Disk Everseman, W.;Dodson, R.O.
  5. Analytical Methods in Vibrations Meirovitch, L.
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  8. Materials Science and Engineering Callister, Jr., W.D.