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Faragau, Andrei B. (author), Metrikine, A. (author), van Dalen, K.N. (author)Transition zones in railway tracks are areas with considerable variation of track properties (i.e., foundation stiffness) encountered near structures such as bridges and tunnels. Due to strong amplification of the response, transition zones require frequent maintenance. To better understand the underlying degradation mechanisms, a one...journal article 2019
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Meijers, P.C. (author), Tsouvalas, A. (author), Metrikine, A. (author)The use of bolted connections between the tower and a support structure of an offshore wind turbine has created the need for a method to detect whether a monopile foundation plastically deforms during the installation procedure. Small permanent deformations are undesirable, not only because they can accelerate fatigue of the structure; but...journal article 2018
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Lu, T. (author), Tsouvalas, A. (author), Metrikine, A. (author)In-plane dynamics of rotating rings on elastic foundation is a topic of continuous research, especially in the field of tire dynamics. When the inner surface of a ring is connected to a stiff foundation, the through-thickness variation of radial and shear stress needs to be accounted for. This effect is often overlooked in the ring models...journal article 2018
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Sánchez Gómez, S. (author), Geurts, C. P.W. (author), Metrikine, A. (author)In this paper, the overall damping as function of the velocity of vibration of two tall structures subjected to wind is studied. The overall damping ratio is studied by means of two simple, but representative and complementary models and it is compared with that identified in two buildings in The Netherlands. In the models, the soil-structure...journal article 2018
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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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Meijers, P.C. (author), Tsouvalas, A. (author), Metrikine, A. (author)Recent developments in the construction of offshore wind turbines have created the need for a method to detect whether a monopile foundation is plastically deformed during the installation procedure. Since measurements at the pile head are difficult to perform, a method based on measurements at a certain distance below the pile head is...journal article 2018
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Versteijlen, W.G. (author), de Oliveira Barbosa, J.M. (author), van Dalen, K.N. (author), Metrikine, A. (author)A method is presented to accurately capture the 3D interaction phenomena of a foundation pile embedded in soil, in a computationally efficient non-local 1D model. It is shown how to extract the global stiffness kernels from simulations with the 3D inhomogeneous continuum, and implement them in a 1D non-local Winkler-type model that can...journal article 2018
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Keijdener, C. (author), de Oliveira Barbosa, J.M. (author), Metrikine, A. (author)In this paper the effect of a nearby, semi-infinite, level ice sheet on the frequency domain response of a thin, floating, rigid body is studied using a 2D model. The ice is modeled using a dynamic Euler-Bernoulli beam and the finite depth water layer is described with the Laplace equation and the linearized Bernoulli equation. Eigenfunction...journal article 2017
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Versteijlen, W.G. (author), Renting, F.W. (author), van der Valk, P. L.C. (author), Bongers, J. (author), van Dalen, K.N. (author), Metrikine, A. (author)In an attempt to decrease the modelling uncertainty associated with the soil-structure interaction of large-diameter monopile foundations, a hydraulic shaker was used to excite a real-sized, in-situ monopile foundation in stiff, sandy soil in a near-shore wind farm. The response in terms of natural frequency and damping of a pile-only system...journal article 2017
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Lu, T. (author), Metrikine, A. (author)The stability of an oscillator uniformly moving along a thin ring that is connected to an immovable axis by a distributed viscoelastic foundation has been studied. The dynamic reaction of the ring to the oscillator is represented by a frequency and velocity dependent equivalent stiffness. The characteristic equation for the vibration of the...journal article 2017
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Versteijlen, W.G. (author), Renting, F.W. (author), Valk, van der, P.L.C. (author), Bongers, J. (author), van Dalen, K.N. (author), Metrikine, A. (author)It is widely accepted that the initial stiffness derived with the p-y methodology as prescribed by the American Petroleum Institute does not capture the true small-strain stiffness for rigidly behaving piles. We present an alternative method, capturing the 3D effects in the soil-pile interaction, in which the soil is characterized with in-situ...journal article 2017
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Dostal, Leo (author), Lourens, E. (author), Metrikine, A. (author)The problem of level ice interacting with compliant structures is addressed, where the ice loads can depend on the dynamical behavior of the structures. We are interested in a special type of ice-induced vibration, known as frequency lock-in, and characterized by having the dominant frequency of the ice forces near a natural frequency of the...journal article 2017
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de Oliveira Barbosa, J.M. (author), Qu, Y. (author), Metrikine, A. (author), Lourens, E. (author)This work reports on experiments that were performed with a freely vibrating cylinder exposed to currents and placed near a plane boundary parallel to the cylinder axis. It is observed that the proximity of the boundary affects the vertical response of the cylinder in two ways: (i) for gaps between 0.75 and 2 diameters (D), the amplitude of...journal article 2017
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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
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Versteijlen, W.G. (author), Metrikine, A. (author), van Dalen, K.N. (author)A procedure is presented for the derivation of an effective small-strain soil stiffness governing the soil– structure interaction of large-diameter monopiles. As a first step, geophysical measurements are used to estimate the depth-dependent shear modulus G of the soil stratum. The second step is to use this modulus and an estimated Poisson’s...journal article 2016
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Tsouvalas, A. (author), Metrikine, A. (author)Anthropogenic noise emission in the marine environment is a key issue nowadays and has drawn the attention of regulatory bodies in various nations. In particular, the noise generated during the installation of foundation piles for the offshore wind industry is considered to be harmful for aquatic species. A reliable prediction of the underwater...journal article 2016
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Habets, C.J.W. (author), Peters, D.J. (author), de Gijt, J.G. (author), Metrikine, A. (author), Jonkman, Sebastiaan N. (author)Conventional seismic designs of quay walls in ports are mostly based on pseudo-static analysis. A more advanced alternative is the Performance-Based Design (PBD) method, which evaluates permanent deformations and amounts of (repairable) damage under seismic loading. The aim of this study is to investigate the suitability of this method for...journal article 2016
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Tsouvalas, A. (author), Van Dalen, K.N. (author), Metrikine, A. (author)Modal decomposition is often applied in elastodynamics and acoustics for the solution of problems related to propagation of mechanical disturbances in waveguides. One of the key elements of this method is the solution of an eigenvalue problem for obtaining the roots of the dispersion equation, which signify the wavenumbers of the waves that may...journal article 2015
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Kärnä, Tuomas (author), Andersen, H. (author), Gürtner, A. (author), Metrikine, A. (author), Sodhi, D. (author), van het Loo, M (author), Kuiper, G. (author), Gibson, R. (author), Fenz, D. (author), Muggeridge, K. (author), Wallenburg, C. (author), Wu, J. F. (author), Jefferies, M. (author)The paper deals with the classical ice engineering challenge of ice-induced vibrations (IIV) of offshore platforms. There is still a general industry concern with aspects of IIV and the load amplification that can arise in some situations resulting from ice interaction with a structure. It was thought important to re-visit current design...journal article 2013