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http://dx.doi.org/10.12989/was.2012.15.3.223

Simulation of multivariate non-Gaussian wind pressure on spherical latticed structures  

Aung, Nyi Nyi (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University)
Ye, Jihong (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University)
Masters, F.J. (Department of Civil and Coastal Engineering, University of Florida)
Publication Information
Wind and Structures / v.15, no.3, 2012 , pp. 223-245 More about this Journal
Abstract
Multivariate simulation is necessary for cases where non-Gaussian processes at spatially distributed locations are desired. A simulation algorithm to generate non-Gaussian wind pressure fields is proposed. Gaussian sample fields are generated based on the spectral representation method using wavelet transforms method and then mapped into non-Gaussian sample fields with the aid of a CDF mapping transformation technique. To illustrate the procedure, this approach is applied to experimental results obtained from wind tunnel tests on the domes. A multivariate Gaussian simulation technique is developed and then extended to multivariate non-Gaussian simulation using the CDF mapping technique. It is proposed to develop a new wavelet-based CDF mapping technique for simulation of multivariate non-Gaussian wind pressure process. The efficiency of the proposed methodology for the non-Gaussian nature of pressure fluctuations on separated flow regions of different rise-span ratios of domes is also discussed.
Keywords
domes; wavelet; CDF mapping technique; multivariate; non-Gaussian; stochastic simulation; wind pressure field; wind tunnel experiment;
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