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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Vibration and Radiated Noise of Circular Cylindrical Shell in the Air Using Spectral Finite Element Method and Boundary Element Method

스펙트럴유한요소법과 경계요소법을 이용한 셸의 공기 중 진동 및 방사소음 해석

  • 이영구 (서울대학교 조선해양공학과) ;
  • 홍석윤 (서울대학교 조선해양공학과) ;
  • 송지훈 (전남대학교 조선해양공학)
  • Published : 2009.11.20
Download PDF
⟨ Previous Next ⟩

Abstract

Analysis of the vibration characteristic for cylindrical shell is more complex than plates since the coupling effects are considered on three dimensions. Based on Love's equation, spectral finite element method(SFEM) is introduced to predict frequency response function of finite circular cylindrical shell in the air with simply supported - free boundary condition without simplifying the equation of motion. And for the radiated noise analysis of cylindrical shell, indirect boundary element method(BEM) is applied using out-of-plane displacements as an input from structural vibration analysis. Comparisons of the structural vibration results by the spectral finite element method and commercial code, NASTRAN(FEM based) are carried out. Likewise, for verification of radiated noise analysis results, commercial code, SYSNOISE(BEM based) are used.

Keywords

References

  1. Leissa, A. W., 1993, 'Vibration of shells,' Acoustical Society of America
  2. Doyle, J. F., 1997, 'Wave Propagation in Structures,' Springer-VerlagNewYork
  3. Timoshenko, S. P., 1959, 'Theory of Plates and Shells,' Mcgrow-Hill, Inc
  4. Lee, U. S., 2004, 'Spectral Element Method in Structural Dynamics,' Inha University Press
  5. Wang, C., Lai, J. C. S., 1999, 'Prediction of Natural Frequencies of Finite Length Circular Cylindrical Shells,' Applied Acoustics 59 (2000) pp. 385-400 https://doi.org/10.1016/S0003-682X(99)00039-0
  6. Zhang, X. M., Liu, G. R. and Lam, K. Y., 2001, 'Vibration Analysis of Thin Cylindrical Shells Using Wave Propagation Approach,' Journal of Sound and Vibration, Vol. 239, No. 3, pp. 397-403 https://doi.org/10.1006/jsvi.2000.3139
  7. Lee, S. J., Song, J. H. and Hong, S. Y., 2009, 'Applications of Spectral Finite Element Method for Vibration Analysis of Sandwich Plate with Viscoelastic Core,' Journal of the Society of Naval Architects of Korea, Vol. 46, No. 2, pp. 155-164. https://doi.org/10.3744/SNAK.2009.46.2.155
  8. Brebbia, C. A., 1978, 'The Boundary Element Method for Engineers,' New York, Wiley
  9. Beskos, D. E., 1987, 'Boundary Element Methods in Mechanics,' NorthHolland