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

An Analysis of Vibration and Sound Radiation of Sandwich Panels Using the Rayleigh-Ritz Method

Rayleigh-Ritz법을 이용한 샌드위치 패널의 진동 및 소음방사 특성 분석

  • Received : 2011.02.18
  • Accepted : 2011.04.20
  • Published : 2011.05.20
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to analyze the vibration and sound generation characteristics of the sandwich panel. Two thick panels were assumed to be separated by a compliant viscoelastic core. The transverse vibration induced by an external impact was analyzed using the Rayleigh-Ritz method. For applying arbitrary boundary condition of the panels, the edges were assumed to be supported by the translational and rotational springs. The beam functions were used as the trial functions. The effect of the boundary condition and viscoelastic core on the resulting vibration characteristics was investigated. The radiated sound power was analyzed using the proposed numerical model and the Rayleigh integral. The dynamic properties of the core and the mass-stiffness-mass resonance frequency had significant influence on the impact sound.

Keywords

References

  1. Rao, Y. V. K. S. and Nakra, B. C., 1974, Vibrations of Unsymmetrical Sandwich Beams and Plates with Viscoelastic Cores, Journal of Sound and Vibration, Vol. 34, No. 3, pp. 309-326. https://doi.org/10.1016/S0022-460X(74)80315-9
  2. Douglas, B. E. and Yang, J. C. S., 1978, Transverse Compressional Damping in the Vibratory Response of Elastic-viscoelastic-elastic Beams, The American Institute of Aeronautics and Astronautics Vol. 16, No. 9, pp. 925-930. https://doi.org/10.2514/3.7595
  3. Sisemore, C. L. and Darvennes, C. M., 2002, Transverse Vibration of Elastic-viscoelastic-elastic Sandwich Beams, Journal of Sound and Vibration Vol. 252, No. 1, pp. 155-167. https://doi.org/10.1006/jsvi.2001.4038
  4. Thompson, D., 2009, Railway Noise and Vibration, Elsevier, Amsterdam, Chap. 11.
  5. Park, J., Siegmund, T. and Mongeau, L., 2003, Analysis of the Flow-induced Vibrations of Viscoelastically Supported Rectangular Plates, Journal of Sound and Vibration, Vol. 261, No. 2, pp. 225-245. https://doi.org/10.1016/S0022-460X(02)00955-0
  6. Lee, P. J., Jeong, J. H., Park, J. and Jeon, J.-Y., 2006, Comparison of Standard Floor Impact Sources with a Human Impact Source, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 16, No. 8, pp. 789-796. https://doi.org/10.5050/KSNVN.2006.16.8.789
  7. Park, J., Kim, S. J., Park, J. W., Yoo, S. Y. and Jeon, J.-Y., 2011, Measurements of Dynamic Properties of Concrete Structures Using Flexural Wave Propagation Characteristics, Mechanics Research Communications, Vol. 38, No. 2, pp. 101-105. https://doi.org/10.1016/j.mechrescom.2011.01.002