Journal of Theoretical
and Applied Mechanics

43, 1, pp. 119-133, Warsaw 2005

Hybrid method of evaluation of sounds radiated by vibrating surface elements

Marek S. Kozień
The paper provides the theoretical background of a hybrid method to be applied in engineering evaluation of sound radiation by vibrating surface elements. The intensity vector is obtained at a selected point in the acoustic medium surrounding the vibrating element. For convenience, certain assumptions are made for the purpose of far-field analysis, which makes the method allow for estimation of radiated acoustic pressure. The method is the verified experimentally. Vibrations of structural elements can be predicted theoretically using a finite element approach or from the measurement of vibrations of real structures.
Keywords: hybrid method; structural vibrations; sound radiation