Journal
COMPUTERS & STRUCTURES
Volume 126, Issue -, Pages 149-163Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2013.02.007
Keywords
Stochastic process or field; Evolutionary spectrum; Non-Gaussian; Non-stationary; Spectral Representation Method; Translation process
Funding
- National Science Foundation [CMMI-0928129]
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No spectral representation-based methodology exists to simulate non-stationary and non-Gaussian stochastic processes. This is due to the inability to determine a unique evolutionary spectrum (ES) for a process with known non-stationary autocorrelation. Here, a framework is developed to estimate evolutionary spectra for non-Gaussian processes so that realizations may be simulated using spectral representation. Two cases are considered. First, the non-Gaussian ES is estimated for a process with prescribed Gaussian ES and marginal non-Gaussian probability density function (PDF). In the second case, a compatible underlying Gaussian ES is estimated for a process with incompatible prescribed non-Gaussian ES and marginal PDF. (C) 2013 Elsevier Ltd. All rights reserved.
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