Simulation of stationary Gaussian stochastic wind velocity field
Simulation of stationary Gaussian stochastic wind velocity field
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平稳高斯随机风速场模拟
DOI:
10.12989/was.2006.9.3.231
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发表时间:
2006-06
影响因子:
1.6
通讯作者:
中科院分区:
文献类型:
--
作者:
An improvement to the spectral representation algorithm for the simulation of wind velocity fields on large scale structures is proposed in this paper. The method proposed by Deodatis (1996) serves as the basis of the improved algorithm. Firstly, an interpolation approximation is introduced to simplify the computation of the lower triangular matrix with the Cholesky decomposition of the cross-spectral density (CSD) matrix, since each element of the triangular matrix varies continuously with the wind spectra frequency. Fast Fourier Transform (FFT) technique is used to further enhance the efficiency of computation. Secondly, as an alternative spectral representation, the vectors of the triangular matrix in the Deodatis formula are replaced using an appropriate number of eigenvectors with the spectral decomposition of the CSD matrix. Lastly, a turbulent wind velocity field through a vertical plane on a long-span bridge (span-wise) is simulated to illustrate the proposed schemes. It is noted that the proposed schemes require less computer memory and are more efficiently simulated than that obtained using the existing traditional method. Furthermore, the reliability of the interpolation approximation in the simulation of wind velocity field is confirmed.
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DOI:
10.1061/(asce)0733-9445(1992)118:1(147
发表时间:
1992
期刊:
Journal of Structural Engineering-asce
影响因子:
--
作者:
I. Kovács;H. Svensson;E. Jordet
通讯作者:
I. Kovács;H. Svensson;E. Jordet
影响因子:
2.4
作者:
M. Shinozuka
通讯作者:
M. Shinozuka
影响因子:
2.6
作者:
M. Grigoriu
通讯作者:
M. Grigoriu
DOI:
10.1061/(asce)0733-9399(1988)114:7(1183
发表时间:
1988-07
期刊:
Journal of Engineering Mechanics-asce
影响因子:
--
作者:
F. Yamazaki;M. Shinozuka
通讯作者:
F. Yamazaki;M. Shinozuka
影响因子:
4.7
作者:
J.-N. Yang
通讯作者:
J.-N. Yang