Vibroacoustic characteristics and sound attenuation analyses of a duct–membrane system coupled with strip masses

In this paper, the vibroacoustic characteristics and noise reduction behavior of a duct–membrane system with attached strip masses are investigated analytically. Fully coupled structural–acoustic interactions between membrane–mass dynamics and duct sound propagation are constructed using the energy formulation and Rayleigh–Ritz procedure. Results from the current model are compared to those calculated by finite element analysis to verify the...