Abstract: A numerical simulation scheme is presented that combines the advantages of the discrete Fourier transform algorithm and a digital filtering scheme to generate nonstationary multivariate random processes. The resulting time ...

Abstract: The frequency-domain analysis concerning the response of nested-cascade multiple input/output systems requires computation of the cross-spectral density matrices that involve the input, intermediate, and output vectors. ...

Abstract: The dynamic response analysis of structural systems to a variety of random excitations using recursive models is presented. The methodology permits analysis of stationary, nonstationary, or transient response of structures ...

Abstract: The fast Fourier transform (FFT) technique is utilized to simulate a multivariate nonstationary Gaussian random process with prescribed evolutionary spectral description. A stochastic decomposition technique facilitates ...

Abstract: This paper presents a frequency‐domain analysis procedure to evaluate wind‐excited surge response of a tension‐leg platform (TLP) in the presence of waves and currents. The nonlinearities of hydrodynamic origin and those ...

Abstract: In this paper, a new method is proposed for the expansion of nonlinear drag forces in terms of multivariate Hermite polynomials correct up to the second order. The drag‐force formulation includes the effect of instantaneous ...

Abstract: A numerical simulation technique is presented that combines the advantages of the discrete Fourier transform (DFT) algorithm and a digital filtering scheme to generate continuous long‐duration multivariate random processes. ...