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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Vibration Analysis and Critical Speeds of Rotating Polar Orthotropic Disks, Part II : Analysis Results

극직교 이방성 회전원판의 진동해석 및 임계속도, II : 해석결과

  • 구교남 (울산대학교 항공우주공학과)
  • Published : 2006.03.01
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Abstract

This paper (Part II) provides the application results of the method presented in a companion paper (Part I) where the dynamic equation for rotating polar orthotropic disk is formulated and its solution method is considered. The natural frequencies and critical speed of polycarbonate CD are calculated to validate the present method and are shown to by very accurate. The critical speeds of typical GFRP and CFRP CD's are computed by aligning the fibers in radial and circumferential directions. The radially reinforced CFRP CD is shown to have the five times higher critical speed than that of the polycarbonate CD. The natural frequencies and critical speeds of disks with various elastic modulus ratios are obtained. The results show that the radially reinforced disk is more effective in increasing critical speed than the circumferentially reinforced disk.

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References

  1. Koo, K. N., 2006, 'Vibration Analysis and Critical Speeds of Rotating Polar Orthotopic Disks, Part I : Formulation and Solution Method, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 16, No. 2, pp. 169-175 https://doi.org/10.5050/KSNVN.2006.16.2.169
  2. Shin, E. S., Lee, K. N., Shin, T. M. and Kim, O. H., 2002, 'Stability Analysis of Transverse Vibration of a Spinning Disk with a Speed Fluctuation,' Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 12, No. 1. pp. 21-28 https://doi.org/10.5050/KSNVN.2002.12.1.021
  3. Koo, K. N., 2005, 'In-plane Stress Analysis of Rotating Composite Disks,' Journal of the Korean Society for Composite Materials, Vol. 18, No. 4, pp. 8-13