Searched for: author:"Bjerkås, Morten"
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Nord, Torodd S. (author), Samardžija, Ilija (author), Hendrikse, H. (author), Bjerkås, Morten (author), Høyland, Knut V. (author), Li, Hongtao (author)
The signature and occurrence of frequency lock-in (FLI) vibrations of full-scale offshore structures are not well understood. Although several structures have experienced FLI, limited amounts of time histories of the responses alongside measured met-ocean data are available in the literature. This paper presents an analysis of 61 measured...
journal article 2018
Nord, Torodd S. (author), Kvåle, Knut Andreas (author), Petersen, Oyvind W. (author), Bjerkås, Morten (author), Lourens, E. (author)
The sea ice interaction with a structure may cause system changes and affect the feasibility of common approaches to track modal parameters. In this paper, a covariance-driven stochastic subspace identification method is used to identify the natural frequencies from 190 time series of ice actions against a lighthouse structure. The results...
conference paper 2017