Wind Pressures on Structures by Proper Orthogonal Decomposition

Proper orthogonal decomposition （POD） is an effective statistical technique for data reduction and feature extraction of the random field including the wind field. This paper introduces the theory of the POD and illustrates engineering of structures. Using the POD technique, it is shown that wind pr...

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Bibliographic Details
Published inJournal of civil engineering and architecture/Tu mu gong cheng yu jian zhu Vol. 6; no. 2; pp. 238 - 243
Main Author Fanghui Li Ming Gu Zhenhua Ni Shizhao Shen
Format Journal Article
LanguageEnglish
Published David Publishing Company 28.02.2012
Subjects
POD
分解结构
数据压缩
正交分解
特征提取
统计技术
风压场
风洞试验
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Summary:Proper orthogonal decomposition （POD） is an effective statistical technique for data reduction and feature extraction of the random field including the wind field. This paper introduces the theory of the POD and illustrates engineering of structures. Using the POD technique, it is shown that wind pressure data can be accurately reconstructed with a limited number of modes using the wind pressure data from wind tunnel test. Comparing the reconstructed values by POD with the original measured values from the wind tunnel test both in the time and frequency domains, it is concluded that the proper orthogonal decomposition（POD） is an efficient and practical technique for deriving the random wind pressure field from limited known data as shown in the pitched roof example in this paper.
Bibliography:Proper orthogonal decomposition, pitched roof, reconstruction of wind pressure field.
Proper orthogonal decomposition （POD） is an effective statistical technique for data reduction and feature extraction of the random field including the wind field. This paper introduces the theory of the POD and illustrates engineering of structures. Using the POD technique, it is shown that wind pressure data can be accurately reconstructed with a limited number of modes using the wind pressure data from wind tunnel test. Comparing the reconstructed values by POD with the original measured values from the wind tunnel test both in the time and frequency domains, it is concluded that the proper orthogonal decomposition（POD） is an efficient and practical technique for deriving the random wind pressure field from limited known data as shown in the pitched roof example in this paper.
ISSN:1934-7359
1934-7367
1934-7367
DOI:10.17265/1934-7359/2012.02.014