Searched for: subject%3A%22curvature%22
(1 - 20 of 63)

Pages

document
Ponson, Vincent (author)
This thesis focuses on the structural behaviour of prestressed concrete girder beams with a particular emphasis on stiffness degradation near intermediate supports due to cracking, in inverted-T girders. Despite advancements in bridge engineering, there is still a lack of understanding regarding crack development along the length of the beam and...
student report 2024
document
Guo, Y. (author), Sharma, S. (author), Kumar, Siddhant (author)
Smooth and curved microstructural topologies found in nature—from soap films to trabecular bone—have inspired several mimetic design spaces for architected metamaterials and bio-scaffolds. However, the design approaches so far are ad hoc, raising the challenge: how to systematically and efficiently inverse design such artificial...
journal article 2024
document
Pels, Jasper (author)
The bending stiffness of a structure is highly dependent on its shape, and this relation can be utilized to allow for a structure to morph into different shapes during deformation. This paper focuses on shape-morphing into multiple shapes (Multi Shape-Morphing), and presents a design method for a parametric<br/>structure consisting of beams,...
master thesis 2023
document
de Boer, Lotte (author)
Icebergs drifting through the Southern Ocean release fresh water and nutrients. This has local impacts on surrounding ecosystems and sea ice formation. On a global scale, salinity patterns and ocean circulation are affected. In addition, <br/> tudying icebergs as a proxy for ice shelves in a warming climate can help predict future climate...
master thesis 2023
document
Hedayati, R. (author), Roudbarian, Nima (author), Tahmasiyan, Sara (author), Bodaghi, Mahdi (author)
Origami structures are a traditional Japanese art that have recently found their way into engineering applications due to their powerful capability to transform flat 2D structures into complex 3D structures along their creases. This has given a rise to their application as designer materials with unprecedented mechanical characteristics, also...
journal article 2023
document
Xie, F. (author), Hao, Zhiguo (author), Ye, Dongmeng (author), Yang, Songhao (author), Li, Chuanxi (author), Dai, Guoan (author), Zhang, Baohui (author), Wang, Ting (author)
The existing protection techniques for high-voltage direct-current (HVDC) grids suffer from several shortcomings such as high sampling frequency, poor robustness, and reliance on simulation for threshold setting. To solve these problems, this paper proposes a non-unit protection method for modular multilevel converter (MMC)-based HVDC grids...
journal article 2023
document
van der Lippe, Stijn (author), Brokkelkamp, A.R. (author), Rojo, Juan (author), Conesa Boj, S. (author)
This study presents an in-depth investigation of the electronic properties and bandgap energy distribution in 1D molybdenum disulfide (1D-MoS<sub>2</sub>) nanostructures. Through a combination of high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and electron energy-loss spectroscopy (EELS), it reveals...
journal article 2023
document
Tjernshaugen, Aurora (author)
That mechanical properties of the extracellular environment can influence cell behaviour has already been established. Recent studies indicate that human mesenchymal stem cells are affected by the surface curvature of the underlying substrate. However, how meso-scale substrate curvature affects cell behaviour is still not clear. This study...
master thesis 2022
document
Wu, Chu-Hsuan (author)
Nature has always had randomness in many ways. Natural cellular structures, specifically, have used randomized microarchitectures to form mechanically efficient materials, such as wood, sponge, and trabecular bone. Mechanical metamaterials are a class of artificial microarchitected materials designed to carry tensions and compressions with...
master thesis 2022
document
Budd, J.M. (author)
A large number of modern learning problems involve working with highly interrelated and interconnected data. Graph-based learning is an emerging technique for approaching such problems, by representing this data as a graph (a.k.a. a network). That is, the points of data are represented by the vertices of the graph, and then the edges linking...
doctoral thesis 2022
document
Tajdari, F. (author), Huysmans, T. (author), Yang, Y. (author), Song, Y. (author)
Preserving features of a surface as characteristic local shape properties captured e.g. by curvature, during non-rigid registration is always difficult where finding meaningful correspondences, assuring the robustness and the convergence of the algorithm while maintaining the quality of mesh are often challenges due to the high degrees of...
journal article 2022
document
van Cappellen, Joost (author)
The forming of double curvature shipbuilding steel plates is performed by experienced craftsmen at IHC Metalix. Their experience will get lost when they retire; therefore, it can be valuable for future metal workers to capture the forming process of a double curved plate theoretically. An analytical description and understanding of the forming...
master thesis 2021
document
Walraven, Bas (author)
Droughts are considered to be one of the most damaging, yet least understood, natural hazards of all. Despite their prevalence, a thorough understanding of them lacks because they are such complex phenomena, and their manifestation can differ depending on the region they occur in. Monitoring hydrological variables and processes is imperative for...
master thesis 2021
document
Li, X. (author)
A flexible riser is a multi-layered pipe device which enables deep-water production by connecting seabed facilities to floating vessels. To withstand huge hydro-static pressure, it is required to have strong collapse capacities. At present, the collapse capacity of a flexible riser is designed based on a "wet collapse'' concept, in which the...
doctoral thesis 2021
document
Doelman, Michiel (author)
Background: Accessing targets through complex trajectories with multiple curves in series, remains challenging today in many application fields, like surgery, the Fukushima disaster, maintenance of complex tube networks, mining and space operations. Current steerable devices require control of an extensive amount of segments, while moving as a...
master thesis 2021
document
Mirzaali, Mohammad J. (author), Ghorbani, Aref (author), Nakatani, Kenichi (author), Nouri Goushki, M. (author), Tümer, N. (author), Callens, S.J.P. (author), Janbaz, S. (author), Accardo, A. (author), Bico, José (author), Habibi, Mehdi (author), Zadpoor, A.A. (author)
The design of advanced functional devices often requires the use of intrinsically curved geometries that belong to the realm of non-Euclidean geometry and remain a challenge for traditional engineering approaches. Here, it is shown how the simple deflection of thick meta-plates based on hexagonal cellular mesostructures can be used to achieve...
journal article 2021
document
Callens, S.J.P. (author), Tourolle né Betts, Duncan C. (author), Müller, Ralph (author), Zadpoor, A.A. (author)
The organization and shape of the microstructural elements of trabecular bone govern its physical properties, are implicated in bone disease, and serve as blueprints for biomaterial design. To devise fundamental structure-property relationships and design truly bone-mimicking biomaterials, it is essential to characterize trabecular bone...
journal article 2021
document
Li, X. (author), Jiang, X. (author), Hopman, J.J. (author)
Flexible risers are designed with strong anti-collapse capacities which enable them to operate in deep-water reservoirs. However, this anti-collapse capacity is susceptible to the pipe curvature in the flooded annulus condition. For the curved riser sections within the touch-down zone, significant reduction of collapse capacity can occur once...
journal article 2021
document
Li, Z. (author), Dankelman, J. (author), De Momi, Elena (author)
Purpose: Planning a safe path for flexible catheters is one of the major challenges of endovascular catheterization. State-of-the-art methods rarely consider the catheter curvature constraint and reduced computational time of path planning which guarantees the possibility to re-plan the path during the actual operation. Methods: In this...
journal article 2021
document
Kalpakoglou, Alexandra (author)
Marine pipelines are often operated at high internal pressure and temperature. This loading condition results in the development of axial compressive forces that can cause the pipeline to buckle globally. Global buckling occurs when significant lateral motion is present in the pipeline and excessive feed-in occurs at that specific location,...
master thesis 2020
Searched for: subject%3A%22curvature%22
(1 - 20 of 63)

Pages