Numerical simulation of piping vibrations using an updated FE model

Heikki Haapaniemi, Arja Saarenheimo, Paul Smeekes, Heli Talja

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    1 Citation (Scopus)

    Abstract

    Traditional design and condition monitoring of piping is mainly based on postulated events and on the application of allowable vibration levels. This approach gives only indirect information on the loading at the critical locations and generally leads to over conservative assessments. It is essential that developing piping failures can be anticipated and/or monitored and that any repair work is carefully planned ahead and carried out during regular outages. In an ongoing project a practical method is being developed to monitor the condition and remaining lifetime of process piping. This method combines both measurements - using a minimum number of fixed continuous measurements - and an adequate computational model. Relatively simple piping in a NPP was chosen as the first pilot case. Measured modal shapes of the structure were excited using an impact hammer and a shaker. Results from experimental modal analysis were used in finite element (FE) model validation and updating process carried out using the FEMtools [1] code. This paper outlines the project and describes the main experiences and results of the model updating work.
    Original languageEnglish
    Title of host publicationPlant Life Management
    Subtitle of host publicationProgress for structural integrity
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages79-98
    ISBN (Electronic)951-38-6281-X
    ISBN (Print)951-38-6280-1
    Publication statusPublished - 2003
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventPlant Life Management: Progress for structural integrity - Espoo, Finland
    Duration: 1 Jan 20021 Jan 2002

    Publication series

    SeriesVTT Symposium
    Number227
    ISSN0357-9387

    Seminar

    SeminarPlant Life Management
    CountryFinland
    CityEspoo
    Period1/01/021/01/02

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    Cite this

    Haapaniemi, H., Saarenheimo, A., Smeekes, P., & Talja, H. (2003). Numerical simulation of piping vibrations using an updated FE model. In Plant Life Management: Progress for structural integrity (pp. 79-98). VTT Technical Research Centre of Finland. VTT Symposium, No. 227 http://www.vtt.fi/inf/pdf/symposiums/2003/S227.pdf