Review and Prospect on Dynamic FE Model Updating Methods of Footbridge Structures Based on Ambient Excitation

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The discrete finite element (FE) model often cannot reflect structure characteristics accurately due to imply more idealistic assumptions and simplifications. Therefore, it is necessary to update FE model for structural damage identification, response calculation, safety evaluation, optimization design, and so on. This article will illustrate respectively three key steps of updating parameters selection, target function selection and optimization method in process of dynamic FE model updating of footbridge structures based on ambient excitation, and put forward a feasible updating method: combine empirical method with sensitivity analysis method to select updating parameters; joint natural frequencies, MAC and modal flexibility as target function; adopt optimization algorithm based on the optimization theory.

Info:

Periodical:

Advanced Materials Research (Volumes 291-294)

Edited by:

Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu

Pages:

1572-1577

Citation:

R. Zhao and Y. G. Zhang, "Review and Prospect on Dynamic FE Model Updating Methods of Footbridge Structures Based on Ambient Excitation", Advanced Materials Research, Vols. 291-294, pp. 1572-1577, 2011

Online since:

July 2011

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$38.00

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