Journal of Theoretical
and Applied Mechanics

47, 2, pp. 411-420, Warsaw 2009

Acoustic intensity vector generated by vibrating set of small areas with random amplitudes

Marek S. Kozień
The paper presents a generalisation of the hybrid method of estimation of sound radiated by vibrating surfaces, formulated previously for the deterministic case of random vibrations. The analysis is made for random amplitudes of vibrations in a narrow frequency band. The results show complexity of the analysis in comparison with the deterministic case. Therefore, the method does not seem to be efficient, like the deterministic one, in engineering applications.
Keywords: acoustic radiation; random vibrations; sound intensity vector; structural noise