Proposed and Method Presentation of Bridge Model Updating

Abstract:

This article briefly reviews the two methods of finite element model (FEM) updating, such as direct matrix methods and the sensitivity-based model updating methods. In addition, the problem in bridge structure model updating often needs to solve large-scale ill-posed linear systems. Therefore, two regularization methods of Tikhonov and TSVD were introduced. Meanwhile, for these systems, it is proposed that the application of the two kinds of regularization method to solve the problem which the test data contaminated by noise may rarely lead to a physically meaningful updated model.

• Periodical: Key Engineering Materials (Volume 619)
• Pages: 11-17
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.619.11
• Online since: July 2014
• Authors: De Jun Wang*, De Min Feng, Bao Jin
• Keywords: Bridge, Finite Element Model Updating, III-Posed Problem, Regularization

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