The effect of modal truncation and spatial distribution in load identification

Michael Vigsø, Rune Brincker, Christos T. Georgakis

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    Load identification in civil engineering application is a growing topic. This study aims to analyze the effect of the load spatial distribution and whether or not the spatial distribution is foreseen prior to the inverse computations. If the dynamic characteristics are based on operational modal analysis there might be errors (uncertainties) associated with the estimated modal parameters and although the variations might appear as insignificant, they potentially pose an enormous effect during the inverse calculations. Depending on the number of sensors and distribution inherently there will be a limit to the number of modes which can be identified. The consequences from these limitations together with assumptions on the load spatial distribution will be the scope for this study.
    Original languageEnglish
    Title of host publicationProceedings of the 8th International Operational Modal Analysis Conference 2019
    Number of pages5
    PublisherIOMAC
    Publication date2019
    Pages553-557
    ISBN (Print)9788409049004
    Publication statusPublished - 2019
    Event8th International Operational Modal Analysis Conference - Admiral Hotel, Copenhagen, Denmark
    Duration: 12 May 201915 May 2019
    Conference number: 8

    Conference

    Conference8th International Operational Modal Analysis Conference
    Number8
    LocationAdmiral Hotel
    Country/TerritoryDenmark
    CityCopenhagen
    Period12/05/201915/05/2019

    Keywords

    • Load identification
    • Modal truncation
    • Spatial distribution

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