Application of finite element model updating to a feed water pipeline of a nuclear power plant

Ari Vepsä (Corresponding Author), Heikki Haapaniemi, Pekka Luukkanen, Pekka Nurkkala, Arja Saarenheimo

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)

    Abstract

    This article is concerned with application of finite element model updating to a part of a secondary feed water pipeline of a VVER type nuclear power plant. A mathematical model of the pipeline was produced with finite element method. The pipeline was subjected to modal testing in three different conditions. The results of the modal testing were then compared with those predicted with the model. This comparison revealed discrepancies between these two sets of results. It is a commonly known fact that incorrect values of parameters in a model, among other things, do cause these discrepancies. In order to improve the correlation between the measured and the predicted results and hence improve the reliability of the model, the model was subjected to finite element model updating. In this updating process, incorrect values of parameters in a model are adjusted, so that a desired level of correlation between measured and predicted results is achieved. As a result, the correlation between the measured and the predicted results was improved. The bulk of the improvement was achieved by adjusting the values of those parameters that were associated with boundary conditions of the model.
    Original languageEnglish
    Pages (from-to)1849 - 1865
    Number of pages17
    JournalNuclear Engineering and Design
    Volume235
    Issue number17-19
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Keywords

    • nuclear power plants
    • light water reactors
    • pipelines
    • structural dynamics
    • finite element analysis
    • finite element method
    • FEM
    • computer simulation

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