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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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Tsetas, A. (author), Tsouvalas, A. (author), Molenkamp, T. (author), Metrikine, A. (author)In the original publication, Eqs. (11) and (17) are published incorrectly, and this has been corrected as follows: (Formula presented.) The original article has been revised.journal article 2022
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Kementzetzidis, Evangelos (author), Pisano, F. (author), Metrikine, A. (author)The analysis of cyclically loaded piles is acquiring ever greater relevance in the field of geotechnical engineering, most recently in relation to the design of offshore monopiles. In this area, predicting the gradual accumulation of pile deflection under prolonged cycling is key to performing relevant serviceability assessments, for which...journal article 2022
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Meijers, P.C. (author), Tsouvalas, A. (author), Metrikine, A. (author)This paper reports on a measurement campaign in which the magnetomechanical response of a steel monopile is recorded during installation with a hydraulic impact hammer. By comparing impact-induced changes in the magnetic stray field of the structure to the measured strain, this effect is analysed for the first time under dynamic loading...journal article 2021
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Dostal, Leo (author), Hollm, Marten (author), Metrikine, A. (author), Tsouvalas, A. (author), van Dalen, K.N. (author)This paper aims at investigating the existence of localized stationary waves in the shallow subsurface whose constitutive behavior is governed by the hyperbolic model, implying non-polynomial nonlinearity and strain-dependent shear modulus. To this end, we derive a novel equation of motion for a nonlinear gradient elasticity model, where the...journal article 2022
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Molenkamp, T. (author), Tsouvalas, A. (author), Metrikine, A. (author)The growing interest in offshore wind leads to an increasing number of wind farms planned to be constructed in the coming years. Installation of these piles often causes high underwater noise levels that harm aquatic life. State-of-the-art models have problems predicting the noise and seabed vibrations from vibratory pile driving. A significant...journal article 2023
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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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Jain, A. (author), Metrikine, A. (author), Steenbergen, M.J.M.M. (author), van Dalen, K.N. (author)This comprehensive study addresses the persistent issue of railway transition zone degradation, evaluating the efficacy of the most commonly used mitigation measures and proposing a novel Safe Hull-Inspired Energy Limiting Design (SHIELD) of a transition structure. Firstly, this work assesses the traditional transition structures, including...journal article 2023
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Faragau, Andrei B. (author), Keijdener, C. (author), de Oliveira Barbosa, J.M. (author), Metrikine, A. (author), van Dalen, K.N. (author)Transition zones in railway tracks are locations with a significant variation of track properties (i.e. foundation stiffness) encountered near structures such as bridges and tunnels. Due to strong amplification of the track’s response, transition zones are prone to rapid degradation. To investigate the degradation mechanisms in transition...journal article 2021
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Sánchez Gómez, S. (author), Metrikine, A. (author)In this paper the dynamic behaviour of a high-rise building with complex structural system is studied. In some cases, to optimize the building design, the horizontal stability of the building is accomplished by the contribution of several structural components. This is the case of the JuBi tower, the building studied in this paper. The...journal article 2020
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Zhao, M. (author), de Oliveira Barbosa, J.M. (author), Yuan, Jun (author), Metrikine, A. (author), van Dalen, K.N. (author)This paper investigates the instability of vertical vibrations of an object moving uniformly through a tunnel embedded in soft soil. Using the indirect Boundary Element Method in the frequency domain, the equivalent dynamic stiffness of the tunnel-soil system at the point of contact with the moving object, modelled as a mass-spring system or...journal article 2021
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Tsetas, A. (author), Tsouvalas, A. (author), Molenkamp, T. (author), Metrikine, A. (author)This paper presents a computationally efficient mode-matching method to predict the relative axial motion of two elastic rods in frictional contact. The motion is of the stick-slip type and is non-uniform along the rods. The proposed method utilizes the piecewise linearity of the problem in time and space. The original set of nonlinear...journal article 2022
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Meijers, P.C. (author), Jolink, C. T. (author), Tsouvalas, A. (author), Metrikine, A. (author)To study the irreversible changes in the magnetic stray field surrounding a steel structure caused by impact-induced elastic and plastic deformations, a steel cylinder was repeatedly subjected to axial impacts of various magnitudes. Due to impacts that induce elastic deformation, the measured magnetic stray field of the structure converges to...journal article 2022
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Faragau, Andrei B. (author), de Oliveira Barbosa, J.M. (author), Metrikine, A. (author), van Dalen, K.N. (author)The study of periodic systems under the action of moving loads is of high practical importance in railway, road, and bridge engineering, among others. Even though plenty of studies focus on periodic systems, few of them are dedicated to the influence of a local inhomogeneous region, a so-called transition zone, on the dynamic response. In...journal article 2022
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Tsetas, A. (author), Tsouvalas, A. (author), Metrikine, A. (author)This paper presents a computationally efficient model for vibratory pile installation. A semi-analytical finite element (SAFE) model for thin cylindrical shells is derived to represent the pile. The linear dynamic response of the soil medium is described by means of Green's functions via the Thin-Layer Method (TLM) coupled with Perfectly...journal article 2023
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Zhao, M. (author), de Oliveira Barbosa, J.M. (author), Metrikine, A. (author), van Dalen, K.N. (author)This paper presents a semi-analytical solution for the 3D problem of a cylindrical tunnel embedded in an elastic half-space subject to plane harmonic compressional and shear waves. Both the tunnel and soil are modelled as an elastic continuum. Conformal mapping is employed to transform the original physical domain with boundary surfaces of two...journal article 2023
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Jain, A. (author), Marykovskiy, Yuriy (author), Metrikine, A. (author), van Dalen, K.N. (author)Railway transition zones (RTZs) are regions where abrupt track stiffness changes occur that may lead to dynamic amplifications and subsequent track deterioration. The design challenges for these zones arise due to variations in material properties in both the depth (trackbed layers composed of different materials) and longitudinal directions of...journal article 2024
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Atzampou, P. (author), Meijers, P.C. (author), Tsouvalas, A. (author), Metrikine, A. (author)Current offshore wind turbine installation and positioning methods require mechanical equipment attached on the lifted components and human intervention. The present paper studies the development of a contactless motion compensation technique by investigating a magnetically controlled pendulum. The technique involves the interaction of a...journal article 2024
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Qu, Y. (author), Metrikine, A. (author)This paper is first of the two papers dealing with the nonlinear modelling and investigation of coupled cross-flow and in-line vortex-induced vibrations (VIVs) of flexible cylindrical structures. As a continuation of the previous work (Qu and Metrikine in Ocean Eng 196:106732, 2020) where a new single wake oscillator model was proposed and...journal article 2021