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Hendrikse, H. (author), Nord, Torodd S. (author)
Interaction of sea or lake ice with vertically sided offshore structures may result in severe structural vibrations commonly referred to as ice-induced vibrations. With the surge in offshore wind developments in sub-arctic regions this problem has received increased attention over the last decade, whereas traditionally the topic has been mainly...
journal article 2019
document
Keijdener, C. (author), Hendrikse, H. (author), Metrikine, A. (author)
In this paper, the efficacy of an effective fluid model (EFM) is studied for replicating the effects that hydrodynamics has on the interaction between level ice, modeled as a semi-infinite Kirchhoff-Love plate, and a downward sloping structure, modeled as a rigid and immobile body. The proposed EFM is based on a distributed frequency-independent...
conference paper 2019
document
Willems, Tom (author), Hendrikse, H. (author)
Offshore wind turbines at locations where sea or lake ice is present need to be designed to withstand ice-induced loading. For vertical-sided support structures, such as monopiles, the effects of ice-induced vibrations need to be considered in the design. Current practice is either to use approaches provided in design standards, or for example...
conference paper 2019
document
Hendrikse, H. (author)
The second edition of the ISO19906 design standard contains changes in the informative appendix concerning dynamic ice actions. Challenges in application of the previous approach and advances in understanding of the dynamic ice-structure interaction process were the main motivation for the revision. The new guideline provides relevant...
conference paper 2019
document
Hendrikse, H. (author), Koot, Jasper (author)
Ice-induced vibrations have to be considered in the design of vertically sided offshore structures which may encounter drifting sea or lake ice during their lifetime. One particular aspect is the contribution of ice-induced vibrations to the fatigue of such structures. Estimation of the duration of events is often difficult, due to limited...
conference paper 2019
document
Owen, C.C. (author), Hendrikse, H. (author)
For the design of offshore structures in regions with ice-infested waters, the prediction of interaction between ice floe and support structure is essential. If the structure is vertically sided at the ice-structure interface, then ice-induced vibrations can develop. Recently, a dynamic icestructure interaction model has been developed and...
conference paper 2019
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Gedikli, Ersegun Deniz (author), Nord, Torodd Skjerve (author), Hendrikse, H. (author), Ziemer, Gesa (author)
Pressures at the ice-structure interface during model-scale ice-structure interaction are often measured with tactile sensors. Resulting datasets usually include large volume of data along with some measurement error and noise; therefore, it is inherently hard to extract the hidden fluctuating pressures in the system. Identifying the...
journal article 2019
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Nord, Torodd Skjerve (author), Petersen, Oyvind (author), Hendrikse, H. (author)
Identifying the modal parameters of structures located in ice-infested waters may be challenging due to the interaction between the ice and structure. In this study, both simulated data from a state-of-the-art ice–structure interaction model and measured data of ice–structure interaction were both used in conjunction with a covariance-driven...
journal article 2019
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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
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Seidel, Marc (author), Hendrikse, H. (author)
In this paper, an analytical method is presented to assess FLI (Frequency lock-in) of monopile support structures for offshore wind turbines, subjected to loading by floating sea ice. The method is introduced, justified and presented with an example. The main idea of the method is to use existing knowledge regarding structural response...
journal article 2018
document
Keijdener, C. (author), Hendrikse, H. (author), Metrikine, A. (author)
In this paper, the bending failure of level ice caused by the interaction with a downward sloping structure is studied in 2D. The focus is on the effect of hydrodynamics on the interaction. This study is done by comparing the predictions of a model that includes both hydrostatics and hydrodynamics with one that only includes hydrostatics.<br/...
journal article 2018
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Hendrikse, H. (author), Ziemer, G. (author), Owen, C.C. (author)
Vertically sided offshore structures subjected to level ice are designed to withstand the effects of ice-induced vibrations. Such structures are, for example, offshore wind turbines on monopile foundations, multi-legged oil- and gas platforms or lighthouses. For the prediction of dynamic interaction between ice and structures, several...
journal article 2018
document
Owen, C.C. (author), Hendrikse, H. (author)
For the design of offshore structures in regions with ice-infested waters, the prediction of interaction between floating level ice and the support structure is essential. If the structure is vertically sided at the ice-structure interface and certain ice and structural conditions exist, then the phenomenon known as ice-induced vibrations can...
conference paper 2018
document
Hendrikse, H. (author)
Offshore developments in ice-covered waters, such as the Arctic Ocean or Baltic Sea, have received increasing attention from the petroleum and wind power industries over the past decade. Sustainable developments in such waters can contribute to a balanced energy future provided that the deployed offshore structures are designed to be safe. The...
doctoral thesis 2017
document
Hendrikse, H. (author), Seidel, Marc (author), Metrikine, A. (author), Loset, Sveinung (author)
Ice-induced vibrations have to be considered in design of vertically sided offshore structures subjected to loading by sea ice, such as offshore wind turbines and oil- and gas platforms. The interaction between ice and structure may result in high global peak loads and the occurring structural vibrations can contribute significantly to the...
conference paper 2017
document
Hendrikse, H. (author), Metrikine, A. (author)
Ice-induced vibrations can occur when flexible, vertically-sided offshore structures are subject to level ice such that the failure mode of ice is predominantly crushing. When the ice is relatively thin, or when the width of the structure is much larger than the ice thickness, the ice tends to buckle and subsequently fail as soon as the...
journal article 2016
document
Tsouvalas, A. (author), Hendrikse, H. (author), Metrikine, A. (author)
Modal decomposition is often used in geophysics and acoustics for the solution of problems related to wave propagation in elastic or acousto-elastic waveguides. One of the key elements of this method is the solution of an eigenvalue problem for obtaining the roots of the characteristic equation, which may signify either frequencies or...
conference paper 2014
document
Hendrikse, H. (author), Metrikine, A.V. (author)
Vertically-sided offshore structures occasionally experience sustained vibration due to drifting ice sheets crushing against them. These vibrations may lead to problems associated with structural integrity and safety. Traditionally, three regimes of interaction are distinguished: intermittent crushing, frequency lock-in and continuous brittle...
conference paper 2013
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Maatanen, M. (author), Loset, S. (author), Metrikine, A. (author), Evers, K.U. (author), Hendrikse, H. (author), Lonoy, C. (author), Metrikin, I. (author), Nord, T. (author), Sukhorukov, S. (author)
conference paper 2012
document
Hendrikse, H. (author), Metrikine, A. (author), Evers, K.U. (author)
conference paper 2012
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