Abstract
Abstract A new technique for response analysis of nonlinear systems subjected to non-Gaussian excitations is presented. The technique is based on a Wiener-Hermite series expansion method. The formal procedure for the derivation of the deterministic equations governing the Wiener-Hermite Kernel functions is described. The resulting response statistics are compared with those obtained from Gaussian closure scheme. A Monte Carlo digital simulation study is also performed. It is shown that the Gaussian closure technique and equivalent linearization method lead to identical results which are somewhat less accurate than those obtained by the non-Gaussian closure scheme. It is also shown that the Wiener-Hermite expansion method is well suited for response analysis of nonlinear systems under non-Gaussian excitations.
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