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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on the Control of the Beat Clarity and the Beat Period in a Ring Structure

링 구조물의 맥놀이의 선명도와 맥놀이 주기 조절에 관한 연구

  • 김석현 (강원대학교 메카트로닉스공학부) ;
  • Published : 2008.11.20
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Abstract

In this study, we propose a new method to control both the beat clarity and beat period in a ring structure. An equivalent ring which satisfies the measured mode condition is determined by using the equivalent ring theory. Theoretical analysis and finite element analysis on the equivalent ring are performed to investigate the effect of the local structural modification on the beat clarity and beat period. Beat clarity and period are improved by attaching asymmetric mass or decreasing local thickness. Through the analysis on the equivalent ring, the proper position and the amount of the local variation are determined to satisfy the required clarity and period condition. All the analysis results are compared and verified by the experiment.

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References

  1. Rayleigh, J. W. S.,1945, 'The Theory of Sound', Vol. 1, New York, Dover Publications
  2. Kim, S. H., Sodel, W., Lee, J. M., 1994, 'Analysis of the Beating Response of Bell Type Structures', Journal of Sound Vibration, Vol. 174, No. 4, pp. 517-536
  3. Kim, S. H., Park, S. G., Park, G. Y. and Suh, B. S., 2002, 'Beat Maps of a Slightly Asymmetric Ring', Transactions of Korean Society for Noise and Vibration Engineering, Vol. 12, No. 9, pp. 685-693 https://doi.org/10.5050/KSNVN.2002.12.9.685
  4. Kim, S. H., Lee, C. W. and Lee, J. M., 2005, 'Beat Characteristics and Beat Maps of the King Seong-deok Divine Bell', Journal of Sound Vibration, Vol. 281, pp. 21-44 https://doi.org/10.1016/j.jsv.2004.01.038
  5. Lee, J. M., Kim, S. H., Lee, S. J., Jeong, J. D. and Park, H. G., 2002, 'A Study on the Vibration Characteristics of a Large Size Korean Bell', Journal of Sound Vibration, Vol. 257, No. 4, pp. 779-790 https://doi.org/10.1006/jsvi.2002.5092
  6. Fox, C. H. J., 1990, 'A Simple Theory for the Analysis and Correction of Frequency Splitting in Slightly Imperfect Rings', Journal of Sound Vibration, Vol. 142, No. 2, pp. 227-243 https://doi.org/10.1016/0022-460X(90)90554-D
  7. Rourke, A. K., McWilliam, S., Fox, C. H. J., 2001, 'Multi-mode Trimming of Imperfect Rings', Journal of Sound Vibration, Vol. 248, No. 4, pp. 695-724 https://doi.org/10.1006/jsvi.2001.3811
  8. Park, H. G., Kim, S. H., and Kang, Y. J., 2008, 'Dual Mode Tuning Strategy of a Slightly Asymmetric Ring', Journal of Acoustical Society of America, Vol. 123, No. 3, pp. 1383-1391 https://doi.org/10.1121/1.2836784
  9. Park, H. G., Kim, S. H. and Kang, Y. J., 2007, 'Analytical Method of Beat Tuning in a Slightly Asymmetric Ring', Journal of Mechanical Science and Technology, Vol. 21, pp. 1226 -1234 https://doi.org/10.1007/BF03179039
  10. Kim, S. H. and Cui, C. X., 2008, 'Beat Control Method Using the Finite Element Analysis of an Equivalent Ring Model', Journal of Acoustical Society of Korea, Submitted and Accepted
  11. Soedel, W., 1993, 'Vibrations of Shells and Plates', 2nd Ed., Marcel Dekker, Inc