Searched for: subject%3A%22Substructures%22
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van Rooijen, Dylan (author)
The offshore wind energy industry is quite literally reaching for the sky to meet the increasing demand for renewable energy in Europe. Offshore wind turbines are sprouting out of the waves off the coast of many European nations and their size is increasing rapidly. As the turbines become larger and the waters in which they are placed become...
master thesis 2023
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Knapen, Jan (author)
Substructural typing imposes additional constraints on variable usage during type checking and requires specialized approaches to ensure type soundness. In this study, we investigate the implementation of a type checker using scope graphs for languages with substructural type systems. Scope graphs, a data structure representing scoping, provide...
bachelor thesis 2023
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Tjaberings, Jorick (author)
The ever-increasing size of offshore wind turbine substructures and the development of wind farms at sites further offshore, with greater water depths and with extremer weather conditions, raise logistical challenges that have never been faced before. Additionally, the offshore wind industry has to deal with governments cutting subsidies, small...
master thesis 2022
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Tjabering, Jorick (author), Fazi, S. (author), Ursavas, Evrim (author)
The construction of offshore wind farms requires solving more and more complex logistical problems due to the increasing sizes of turbines and changing environments. In particular, the installation of substructures requires attention due to their significant impact on capital expenditures and the limited literature and guidelines available. In...
journal article 2022
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de Kruijf, Theo (author)
Offshore Wind Farms (OWFs) have developed into an integral part of the European energy transition in the fight against climate change. The North Sea, with its excellent wind conditions and soil characteristics, as well as ports and industrial energy consumers nearby, has become the epicenter of offshore wind development. The coming years will...
master thesis 2021
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Tatsis, K. E. (author), Dertimanis, V. K. (author), Papadimitriou, C. (author), Lourens, E. (author), Chatzi, E. N. (author)
This paper presents a general framework for estimating the state and unknown inputs at the level of a system subdomain using a limited number of output measurements, enabling thus the component-based vibration monitoring or control and providing a novel approach to model updating and hybrid testing applications. Under the premise that the...
journal article 2021
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Gonzalez Jimenez, Martin (author)
A significant percentage of the offshore wind resource is located in waters deeper than 60m. Therefore, several floating offshore wind turbines (FOWT) have been conceived in recent years. In deep waters, it seems logical to also harvest wave energy. One of the options to harness both resources is to use a floating offshore hybrid wind-wave...
master thesis 2020
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Mortazavi, Nooshinossadat (author)
This work comprises research in the field of Experimental Dynamics. This technique is currently used in the automotive area and is used to enhances the current state of FEM with the inclusive of test- based models. Building test-based models for EDS (Experimental Dynamic Substructuring) requires very accurate measurement, and this thesis...
master thesis 2020
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van Haastert, Rutger (author)
The electrification of drive trains in current and next generation vehicles require vibration dampers that possess different dynamic properties than its internal combustion engine counterparts. This makes research in automotive vibration damping a hot topic. Research in this field often contains the practice of Frequency Based Substructuring ...
master thesis 2019
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van den Bosch, Valentijn (author)
As a reaction to urban densication, light weight building is an attractive concept for optimally utilizing the capacity of the existing built environment. A common issue paired with light weight construction is the need to engage in vibrational design, in order to minimize hindrance due to human activities such as walking, that cause vibrations...
master thesis 2019
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Wu, L. (author), Tiso, P. (author), Tatsis, Konstantinos (author), Chatzi, Eleni (author), van Keulen, A. (author)
This paper presents a novel model order reduction technique for 3D flexible multibody systems featuring nonlinear elastic behavior. We adopt the mean-axis floating frame approach in combination with an enhanced Rubin substructuring technique for the construction of the reduction basis. The standard Rubin reduction basis is augmented with the...
journal article 2019
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Krattiger, Dimitri (author), Wu, L. (author), Zacharczuk, Martin (author), Buck, Martin (author), Kuether, Robert J. (author), Allen, Matthew S. (author), Tiso, P. (author), Brake, Matthew R.W. (author)
The Hurty/Craig-Bampton method in structural dynamics represents the interior dynamics of each subcomponent in a substructured system with a truncated set of normal modes and retains all of the physical degrees of freedom at the substructure interfaces. This makes the assembly of substructures into a reduced-order system model relatively...
review 2019
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Greco, Giuseppe (author), Liang, Fei (author), Palmigiano, A. (author), Rivieccio, Umberto (author)
We introduce a proper multi-type display calculus for bilattice logic (with conflation) for which we prove soundness, completeness, conservativity, standard subformula property and cut elimination. Our proposal builds on the product representation of bilattices and applies the guidelines of the multi-type methodology in the design of display...
journal article 2019
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Gulikers, Tom (author)
Engineering fields such as aerospace rely heavily on the Finite Element Method (FEM) as a modelling tool. In combination with the scale and complexity of the structures typically involved here, computational cost remains a traditional issue. To perform FEM analyses of such structures efficiently nonetheless, engineers rely on techniques such as...
master thesis 2018
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Nieuwenhuijse, Lennart (author)
A popular strategy in structural dynamic modeling is breaking the structure down into separable, manageable substructures. By doing so, one can choose the most efficient way of modeling the substructures, before synthesizing the full system model. This method is known as Dynamic Substructuring (DS). One method of DS, is Frequency Based...
master thesis 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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Stolk, M. (author)
Since its introduction, Topology Optimization (TO) has been applied to a broad range of design cases. TO is a material distribution method which finds the optimal material lay-out for a given design space while upholding given constraints and boundary conditions. This has made the method popular in structural mechanics where it is used to find...
master thesis 2017
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Klaassen, Steven W.B. (author), van der Seijs, M.V. (author), de Klerk, D. (author)
This paper introduces SEMM: a method based on Frequency Based Substructuring (FBS) techniques that enables the construction of hybrid dynamic models. With System Equivalent Model Mixing (SEMM) frequency based models, either of numerical or experimental nature, can be mixed to form a hybrid model. This model follows the dynamic behaviour of a...
journal article 2017
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van der Seijs, M.V. (author)
Sound and vibration have a defining influence on our perception of product quality. They are especially well-known aspects in the automotive industry; a branch which sees, besides safety and driving comfort, ever-increasing expectations of the acoustic experience. After all, a smooth and silent driving experience appeals to a feeling of <i...
doctoral thesis 2016
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Tchai, J.J. (author)
The design of a modern vehicle must fulfill high standards regarding safety and ride comfort as well as vehicle dynamics. This is of particular importance for front suspension and steering system as the latter is the only tactile connection between road and driver. The vibration feedback from the tires to the steering wheel delivers both useful...
master thesis 2016
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