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Published in: International Journal of Mechanics and Materials in Design 1/2018

04-04-2017

Damage identification in gravity dams using dynamic coupled hydro-mechanical XFEM

Authors: Muyiwa Alalade, Long Nguyen-Tuan, Frank Wuttke, Tom Lahmer

Published in: International Journal of Mechanics and Materials in Design | Issue 1/2018

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Abstract

In order to maximize efficiency and reduce the risk of failure in operational dams, an effective and efficient method which employs the inverse analysis of a dynamic coupled hydro-mechanical problem is proposed. The numerical model is based on the extended finite element model. The proposed method is able to identify cracks which may be detrimental to structural performance and reliability. An attempt is made using both deterministic and heuristic based strategies to solve the ill-posed inverse problem and identify the location, dimension and orientation of the crack. More so, the influence of the search space and conditioning of the cost function in identifying crack parameters are investigated. The proposed method shows promising results in the identification of cracks in a fully operational dam.

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Metadata
Title
Damage identification in gravity dams using dynamic coupled hydro-mechanical XFEM
Authors
Muyiwa Alalade
Long Nguyen-Tuan
Frank Wuttke
Tom Lahmer
Publication date
04-04-2017
Publisher
Springer Netherlands
Published in
International Journal of Mechanics and Materials in Design / Issue 1/2018
Print ISSN: 1569-1713
Electronic ISSN: 1573-8841
DOI
https://doi.org/10.1007/s10999-017-9367-4

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