Experimental validation of an efficient strategy for FE model updating and damage identification in tubular structures

Article

Ghannadi, Parsa, Kourehli, Seyed Sina and Nguyen, Andy. 2024. "Experimental validation of an efficient strategy for FE model updating and damage identification in tubular structures." Nondestructive Testing and Evaluation. https://doi.org/10.1080/10589759.2024.2402887
Article Title

Experimental validation of an efficient strategy for FE model updating and damage identification in tubular structures

ERA Journal ID124397
Article CategoryArticle
AuthorsGhannadi, Parsa, Kourehli, Seyed Sina and Nguyen, Andy
Journal TitleNondestructive Testing and Evaluation
Number of Pages40
Year2024
PublisherTaylor & Francis
Place of PublicationUnited Kingdom
ISSN1058-9759
Digital Object Identifier (DOI)https://doi.org/10.1080/10589759.2024.2402887
Web Address (URL)https://www.tandfonline.com/doi/full/10.1080/10589759.2024.2402887
Abstract

Early identification of damages in tubular structures is crucial for their long-term safety and functionality, as they are essential in various modern life applications. Experimental and numerical modal data may slightly differ due to unknown structural characteristics and uncertainties, which are typically addressed using finite element (FE) model updating procedures. Instead of using the Euler-Bernoulli beam element, this paper utilizes the
semi-rigidly connected frame element (S-RCFE). By incorporating extra design parameters, such as the end fixity factor of all connections, the S-RCFE offers a unique opportunity to establish a strong agreement between experimental and numerical models through an optimization-based FE model updating procedure. A well-calibrated FE model represents the actual behaviour of the structure and leads to achieving accurate results in the damage detection step. This paper employs the improved grey wolf optimizer (IGWO) and weIghted meaN oF vectOrs (INFO) to minimize 11 objective functions with adjustable coefficients. The statistical investigations reveal that the IGWO effectively minimized five out of six objective functions, which were defined based on the modified total modal assurance criterion (MTMAC). The rest of the objective functions based on the modal assurance criterion (MAC), natural frequency vector assurance criterion (NFVAC), differences in natural frequencies, and a combination of the MAC and NFVAC could not obtain accurate outcomes for the model updating problem. The statistical comparison indicates that the INFO algorithm is unreliable for the FE model updating despite achieving at least one successful result in ten independent runs. The INFO algorithm and the IGWO algorithm demonstrate comparable performance in damage detection. The analysis also shows that the coefficients of MTMAC, alpha and beta, should be adjusted to 0.65 and 1, respectively, to achieve the most accurate damage detection result.

KeywordsFE model updating, Damage detection, Semi-rigidly connected frame element, Improved grey wolf optimizer, Weighted mean of vectors, Modified total modal assurance criterion
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020400510. Structural engineering
400508. Infrastructure engineering and asset management
Public Notes

The accessible file is the accepted version of the paper. Please refer to the URL for the published version.

Byline AffiliationsIslamic Azad University, Iran
Azarbaijan Shahid Madani University, Iran
School of Engineering
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