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Vibration and Radiated Noise Analysis of Plate Covered with Damping Material

제진재가 피복된 평판의 진동 및 방사소음

  • 이장명 (울산대학교 기계.자동차공학부) ;
  • 이준 (울산대학교 대학원 기계.자동차공학부)
  • Published : 2002.05.01

Abstract

A solution procedure of vibration and radiated noise of the plate covered with damping material has been studied. To predict the vibration level and the radiated noise level of the plate covered with damping material, FEM and BEM have been utilized, respectively. A property of damping material has been measured by using a composite beam. Two different kinds of measuring procedure for the composite beam have been introduced by comparing its characteristics. The numerical prediction of vibration level of the Plate covered with damping material has been proved with experimental data.

Keywords

References

  1. Oberst, H., 1952, 'Uber die Damping der Bigeschwingungen Dunner Bleche', Durch Fest haftende Blelage, Acustica, Vol. 2, Akustische Beihefte No. 4, pp. 181-194. (H. L. Blackford, Inc., trans., Newark, N. J.)
  2. Kerwin, E. M., Jr, 1959, 'Damping of Flexural Waves by a Constrained Viscoelastic Layer', Journal of the Acoustic Society of America, Vol. 31, No. 7, pp. 952-962 https://doi.org/10.1121/1.1907821
  3. Ross, D., Ungar, E. E. and Kerwin, E. M., 1959, Section 3 in Structural Damping, (ED. J. E. Ruzicka) New York : Pergamon Press. Damping of Plate Flexural Vibrations by Means of Visco- elastic Laminae
  4. Ross D. and Kerwin, E. M., 1959, 'A Comparison of the Effectiveness of Homogeneous Layer and Damping Flexural Wave in Plate', Proc. 3rd Intl. Congr. on Acoustics, Stuttagart.
  5. Robert D., Blevins Ph. D., 1969 Formulas for Natural Frequency and Mode Shape, pp. 250-263, Robert E. Krieger Publishing Company
  6. Unger, E. E., 1962, 'Loss Factor of Viscoelastic Damped Beam Structures', Journal of the Acoustical Society of America, Vol. 34, No. 8, pp. 1082-1089 https://doi.org/10.1121/1.1918249
  7. Ditaranto, R. A., 1965, 'Theory of Vibratory Bending for Elastic and Viscoelastic Layered Finite Length Beams', Journal of Applied Mechanics, Vol. 32, Trans. ASME, Series E, Vol. 88, No. 4, pp. 861-867
  8. Mead, D. J. and Markus, S., 1969, 'The Forced Vibration of a Three-layer, Damped Sandwich Beam with Arbitrary Boundary Conditions', Journal of Sound and Vibration, Vol. 10, No. 2, pp. 163-175 https://doi.org/10.1016/0022-460X(69)90193-X
  9. Ahid D. N, 1985, Vibration Damping, John Wiley & Sons
  10. ASTM E 756 - 83, Standard Method for Measuring Vibration Damping Properties of Materials