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Erschienen in:
2019 | OriginalPaper | Buchkapitel
15. Scenario Based Approach for Load Identification
verfasst von : Michael Vigsø, Marius Tarpø, Jannick B. Hansen, Rune Brincker, Christos T. Georgakis
Erschienen in: Dynamics of Civil Structures, Volume 2
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Abstract
In output only analysis the load identification has been a puzzle for several years. Different techniques have been purposed to cope with the inversion problem that lies within this field. However it has been shown, that most methods struggle to obtain robust and consistent results in cases of modal truncation and noise contaminated signals. In the light of these challenges, a scenario based method is proposed. This approach utilizes model updating along with mode shape expansion to obtain a reliable numerical model of the given structure. Then, by evaluating a series of rational load scenarios, it is possible to obtain a reasonable input identification – both the spatial distribution and the temporal variation of the load. The method is demonstrated numerically and experimentally.