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Faragau, A.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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Tsouvalas, A. (author), Peng, Y. (author), Metrikine, A. (author)
In this paper, a pile-water-soil model is developed for the prediction of sound generated due to impact piling. The complete model consists of two modules: i) a near-source module aiming at the accurate description of the pile-water-soil interaction together with the sound generation and propagation in the vicinity of the pile; and ii) a far...
conference paper 2019
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Lu, T. (author), Tsouvalas, A. (author), Metrikine, A. (author)
A new high-order model for in-plane vibrations of rotating rings is developed in this paper. The inner surface of the ring is connected to an immovable axis through an elastic foundation (distributed springs), whereas the outer surface is traction free. The developed model enables the dynamic analysis of the rings on stiff elastic foundation...
journal article 2019
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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
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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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Faragau, A.B. (author), Metrikine, A. (author), Mazilu, Traian (author), van Dalen, K.N. (author)
Transition zones are locations of discontinuity in the support,<br/>such as stiffness transition zones in the ballasted track (close<br/>to bridges, culverts and tunnels). These zones necessitate<br/>special attention, mainly because they:<br/>- Require frequent and expensive maintenance activities.<br/>- Cause delays due to unexpected maintenance.
poster 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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van Vliet, R. (author), Metrikine, A. (author)
Structures with a downward sloping waterline shape in Arctic or sub-Arctic regions experience reduced loading from ice on the structure and its foundation compared to vertical structures as the slope causes the ice to fail in bending. For the design of these structures, a numerical model is desired that can predict the loading from the ice on...
conference paper 2018
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Zhao, M. (author), van Dalen, K.N. (author), de Oliveira Barbosa, J.M. (author), Metrikine, A. (author)
This paper addresses the dynamic response of an infinitely long cylindrical structure embedded in an elastic half-space. The structure has a circular cross-section and its axis is parallel to the half-space surface. Excitation can be incident body waves or forces applied on the surface of the half-space and/or the structure. The model can be...
conference paper 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.L.C. (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), Tsouvalas, A. (author), Metrikine, A. (author)
abstract 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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Hoving, J.S. (author), Metrikine, A. (author)
This contribution considers the wave reflection at the interface between a discrete lattice that describes the nonlinear near-field response to a dynamic load and a matching system that describes the linear far-field response. The near-field system is modelled as a one-dimensional discrete system of particles that is capable of describing...
conference paper 2017
document
Lu, T. (author), Tsouvalas, A. (author), Metrikine, A. (author)
conference paper 2017
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