Abstract
The non-stationary random response analysis of coupled acoustic-structural systems under non-stationary random excitations is investigated in this paper. By combining the pseudo excitation method (PEM) and high precision direct (HPD) integration method, an efficient method for the non-stationary random response analysis is proposed. PEM is used to derive the dynamic equation of coupled acoustic-structural systems under non-stationary random excitations and transform the non-stationary random response analysis to the deterministic pseudo transient response analysis. HPD method is used to further improve computational efficiency while maintaining high accuracy. Numerical examples are given to illustrate the validity of the developed approach.
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