Title: A research on fast algorithm for simulation of non-gaussian wind field on large-span roof structures
Abstract:To reproduce the non-Gaussian nature of wind pressure fluctuations on roofs,a new simulation algorithm is proposed for generating a multi-variate stationary non-Gaussian wind pressure field.A novel fo...To reproduce the non-Gaussian nature of wind pressure fluctuations on roofs,a new simulation algorithm is proposed for generating a multi-variate stationary non-Gaussian wind pressure field.A novel four-parameter exponential function is used to express the transformation of a Gaussian process to the non-Gaussian wind pressure process.Then a set of nonlinear equations is derived to determine the parameters of the exponential function.Based on the property of the joint density of a bi-variate Gaussian vector,the relation between correlation functions is obtained.Therefore the non-Gaussian wind pressure field is expressed as a function of a fictitious Gaussian vector process.And the wave superposition method can be employed to generate the underlying Gaussian processes.The engineering example indicates that the proposed algorithm is both efficient and accurate.Hence the algorithm is suitable for engineering application.Read More
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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