Searched for: subject%3A%22viscoelastic%22
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van Dokkum, J.S. (author)
Inelastic deformation is a common but often neglected phenomenon in experimental analysis of metal deformation and in contacts. This neglect leads to degraded measurement accuracy of material properties. Therefore a need arises for material models that a priori incorporate inelasticity. These material models must be simple and comprehensive to...
doctoral thesis 2023
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Koens, Dennis (author)
High-tech systems are subjected to strict temperature requirements. Therefore temperature control using cooling water is vital for thermal stability. Unfortunately, components like pumps and fluid couplings generate flow disturbances, resulting in mechanical vibrations that influence the performance of the system. This research focusses on the...
master thesis 2023
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Czarnecka, Julia (author)
Recent advancements in additive manufacturing have led to significant progress in the field of metamaterials, wherein the introduction of microscopic features affects the material properties on a macroscale. Common examples of these materials are truss-based and plate-based structures. However, these lattices bear inherent susceptibility to...
master thesis 2023
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van Hooff, Bradley (author)
Within this report, an analytical research will be performed on the effectivity of Tuned Mass Dampers (TMDs) and Viscoelastic Dampers (VEDs), and a conclusion will be drawn as to which is most effective in damping the oscillations of an earthquake. First of all, a simple model of second-order differential equations describing the oscillations of...
bachelor thesis 2023
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Pérez-Ràfols, Francesc (author), van Dokkum, J.S. (author), Nicola, L. (author)
Viscoelasticity and roughness are among the possible causes of the adhesive hysteresis displayed by soft contacts. Viscoelasticity causes an increased effective work of adhesion due to stiffening of the contact, while roughness is responsible for elastic instabilities. Herein, we explore the interplay between viscoelasticity and roughness by...
journal article 2023
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Hu, Xuanyu (author), Stark, Alexander (author), Dirkx, D. (author), Hussmann, Hauke (author), Fienga, Agnès (author), Briaud, Arthur (author), Mémin, Anthony (author), Melini, Daniele (author), Fayolle-Chambe, M.S. (author)
We investigate the impact of viscoelastic tidal deformation of the Moon on the motion of a polar orbiter. The dissipative effects in the Moon’s interior, i.e., tidal phase lags, are modeled as Fourier series sampled at given frequencies associated with linear combinations of Delaunay arguments, the fundamental parameters describing the lunar...
journal article 2023
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Marino, Enzo (author), Flaschel, Moritz (author), Kumar, Siddhant (author), De Lorenzis, Laura (author)
We extend EUCLID, a computational strategy for automated material model discovery and identification, to linear viscoelasticity. For this case, we perform a priori model selection by adopting a generalized Maxwell model expressed by a Prony series, and deploy EUCLID for identification. The methodology is based on four ingredients: i. full...
journal article 2023
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Ghose, R. (author), Carvalho, João (author), Alves, Daniela V. (author), Santos, Luiz Alberto (author), Ressurreição, Ricardo (author), Alves, Paulo Henrique Bastos (author), Leote, Jaime (author)
The Azambuja fault is a NNE trending structure located 50 km north of Lisbon, the capital and most populous city of Portugal. The fault has been considered as a possible source for the historical, large earthquakes. Understanding this fault is a priority in seismic hazard evaluation of this region. The fault has a clear morphological...
journal article 2023
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van de Ruit, M.L. (author), van der Velden, Levinia L. (author), Onneweer, Bram (author), Benner, Joyce L. (author), Haarman, Claudia J.W. (author), Ribbers, G.M. (author), Selles, R.W. (author)
Background: Upper limb impairments in a hemiparetic arm are clinically quantified by well-established clinical scales, known to suffer poor validity, reliability, and sensitivity. Alternatively, robotics can assess motor impairments by characterizing joint dynamics through system identification. In this study, we establish the merits of...
journal article 2023
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Valiya Valappil, S. (author), Krushynska, Anastasiia O. (author), Aragon, A.M. (author)
The band-gap frequencies of elastic metamaterials are ideally determined by a metamaterial architecture; yet, in practical situations, are often dependent on the material damping in their constituent(s). The analysis of viscoelastic metamaterials requires however substantial computational resources and, except for oversimplified cases, is...
journal article 2023
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Hille, Helge C. (author), Kumar, Siddhant (author), De Lorenzis, Laura (author)
The numerical simulation of additive manufacturing techniques promises the acceleration of costly experimental procedures to identify suitable process parameters. We recently proposed Floating Isogeometric Analysis (FLIGA), a new computational solid mechanics approach, which is mesh distortion-free in one characteristic spatial direction....
journal article 2023
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Chandrashekar, A. (author)
Most physical phenomena be it mechanical, chemical or biological are inherently nonlinear in nature. In fact, it is the linear phenomenon that is the exception rather than the rule. By harnessing these nonlinearities one can obtain far greater information about the underlying physics and develop more sensitive and efficient devices. This is...
doctoral thesis 2022
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Govindasamy, Ilambharathi (author)
Fluid flows such as rowing and animal flight involve both acceleration and vortex shedding. Some of such flows also involve complex fluids, as in blood flow from the left atrium into the left ventricle in a human heart. Among the complexities of such fluids, we are interested in the viscoelastic nature. The effect of acceleration in vortex...
master thesis 2022
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Lin, Chaoning (author), Li, Tongchun (author), Chen, Siyu (author), Yuan, Li (author), van Gelder, P.H.A.J.M. (author), Yorke-Smith, N. (author)
Dam safety monitoring has become an important topic and is critical for evaluating a dam's safety status. This study focuses on identifying the mechanical properties of a concrete dam from long-term viscoelastic deformation monitoring data. A novel inversion framework is proposed in which a surrogate model, instead of the finite element model,...
journal article 2022
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Bampatzeliou, A. (author)
Sediment tends to accumulate in small channels in port of Rotterdam which obstructs daily ship navigation and as a result needs to be removed by high-cost dredging operations. The goal of this project was to design a gel product that helps in the sedimentation control in the Rotterdam port area and contributes to the reduction of disposal costs,...
report 2022
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Ros, Vito (author)
Ageing of infrastructure leads to an increasing demand for new technologies and design solutions in current bridge engineering. Over the last decades the traffic intensity has grown tremendously, while design codes and regulations have become stricter. Many current steel bridges realised in The Netherlands suffer from fatigue problems....
master thesis 2021
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Roth, Caspar (author)
Self-healing ability in polymers is typically probed by monitoring restorative properties after localized macroscopic damage or repetitive cycles of destructive testing followed by a healing cycle (e.g. cut-and-heal tests). However, the restoration of homogeneously distributed damage before ultimate failure remains largely unattended in...
master thesis 2021
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Alonso Diaz, Miguel (author)
Rain erosion of leading edges in wind turbines caused by high-velocity droplet impacts is one of the current problems in wind energy that affects their energy production and maintenance costs. The most widespread solution for this problem is the application of viscoelastic coatings (generally, polyurethane) along the leading edge of the wind...
master thesis 2021
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Dankelman, Stefan (author)
Flagellar locomotion is one of the first forms of locomotion on our planet. Microorganisms use their flagella to reorientate or generate movement in search for nutrients or gradients in light intensity. These microscopic swimmers are able to adapt their swimming gait to the circumstances they encounter. Motile microorganisms such as the...
master thesis 2021
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Yépez Calderón, Andrés (author)
Energetic materials have widespread applicability in various fields of engineering as propellants, explosives, and pyrotechnics. The Netherlands Organisation for Applied Scientific Research (TNO) is investigating additive manufacturing of solid propellants. As part of this investigation, TNO developed a new polymer binder mix for solid...
master thesis 2021
Searched for: subject%3A%22viscoelastic%22
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