Updating of Finite Element Model in Considering Mode Errors with Fuzzy Theory

Yang Liu; Zhong Dong Duan; Hui Li

doi:10.4028/www.scientific.net/KEM.413-414.785

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 413-414Updating of Finite Element Model in Considering...

Updating of Finite Element Model in Considering Mode Errors with Fuzzy Theory

Abstract:

Finite element model updating aims at reconciling the analytical model with the test one, to acquire a refined model with high-fidelity in structural dynamic properties. However, testing data are inevitable polluted by noises. In this study, the mode parameters and design variables are modeled as fuzzy variables, and a fuzzy model updating method is developed. Instead of a single optimal model, a set of satisfactory models is obtained. The most physically compatible solution is sorted by insights to the structures. The proposed method is applied to a real concrete bridge, for which a physically meaningful model is identified.

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Periodical:

Key Engineering Materials (Volumes 413-414)

Pages:

785-792

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.413-414.785

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Online since:

June 2009

Authors:

Yang Liu, Zhong Dong Duan, Hui Li

Keywords:

Fuzzy Finite Element, Fuzzy Set Theory, Interval Sensitivity Analysis, Structural Model Updating, Sublevel Technique

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