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Malladi, Avyadhish (author)This thesis project focuses on the evaluation of the Extended Finite Element Model (XFEM) for modelling skin-stringer separation in thermoplastic composite stiffened panels. The study uses test results from a reference study in the literature on a PEKK-FC carbon composite panel with three stringers joined to the skin using a short-fibre...master thesis 2024
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Almaz, Kübra (author)Pushing the envelope of aerospace structures requires the complete exploitation of their potential in terms of load-carrying capacity per unit weight for both economic and ecological reasons: the two most important being the reduction of fuel consumption and greenhouse gas emissions. A key approach involves allowing structures like stiffened...master thesis 2024
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Fung-A-Jou, Zola (author)Prostate cancer is the second most frequently diagnosed cancer in men. A minimal invasive treatment for prostate cancer is transperineal laser ablation (TPLA), which involves inserting a needle containing a laser fibre into the prostate to induce local cell death. The ovipositor of the parasitoid wasp offers a solution to challenges in TPLA, as...master thesis 2023
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Wildenborg, Sander (author)In this work, it is demonstrated that kirigami deformation behaviour can be controlled by tailoring the anisotropic material that is used to create the kirigami structure. The ultimate goal is to find a relationship between the material pattern and the deformation behaviour of the kirigami structure. An anisotropic thermoplastic polyurethane...master thesis 2023
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Teeuwen, Eduard (author)It is becoming increasingly clear that the effects of climate change should be decreased or even mitigated. Green alternative sources of energy are being explored, and wind energy emerges as an important option that can be exploited on a large scale. Wind turbines are placed more and more often offshore due to larger and more stable wind...master thesis 2023
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Pietersma, Rolijne (author)The Koiter methodology is a reduced-order model that can predict the initial post-buckling characteristics of structures. Incorporating the Koiter approach within finite element simulations resulted in challenges. These included mesh sensitive initial post-buckling coefficients, computationally expensive high-order derivatives, and phenomena...master thesis 2023
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Meiring, Anton (author)Background: Scoliosis is a three-dimensional abnormal curvature of the spine, with Adolescent Idiopathic Scoliosis (AIS) being the most common type. Current fusion treatment is highly invasive and removes all mobility of the fused spinal segments. To tackle this problem, non-fusion techniques were developed, that try to correct the abnormal...master thesis 2023
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Moerman, Marco (author)Compliant mechanisms are a popular alternative to conventional mechanisms because of their advantages on mass reduction, friction, backlash and lubrication. However, the major drawback in the use of compliant mechanisms is the stiffness is the desired direction of motion. The advantages of conventional and compliant mechanisms can be combined if...master thesis 2023
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Slingerland, Bas (author)In this literature study the buckling of frames is investigated. Two frames are considered, where both consists of two columns and a girder. The first step was looking at the behavior of a single column under an compressive load. This results in so called effective lengths for different sets of boundary conditions on the column. Because in a...student report 2022
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Korakas, Ntonalnt (author)In this thesis an investigation into the buckling behaviour of steel trusses with eccentric joints is performed.<br/>In recent years, Ampelmann motion compensated gangway systems have been pivotal to the advancement of offshore personnel transfers. These systems for functionality reasons require the use of eccentric joints. The behaviour of such...master thesis 2022
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Pereira, Andres (author)A novel twist morphing concept is explored, that exploits the buckling instabilities of slender spar webs integrated into a wing structure to control the twisting response to external loads. The main novelty of the concept is in controlling the effective shear stiffness of the post-buckled slender spar webs through external variable constraints...master thesis 2022
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Kapildewsing, Rajiv (author)Vibration energy harvesters can help in different areas. These vary from supplying power to medical implants or wireless sensors that can aid in predicting natural disasters. However, the problem is that they are not able to generate power across a large bandwidth of frequencies. Bistable energy harvesters can solve this problem when these are...master thesis 2021
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Ashok, Aravind (author)The advancement in the steering capabilities of fibre placement machines has improved the tailoring potential and therefore the design possibilities for composite structures. However, the larger design freedom leads to complex and non-convex design spaces. Finding the optimum solution thus becomes costly and challenging, specifically considering...master thesis 2021
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van Driel, Tim (author)Free-form façades with bent glass have become increasingly popular in recent times. As bent glass is stiffer against out-of-plane loads, it can result in thinner glass and lower embodied carbon. A promising new technique is to cold bend thin glass plates with a stiff structural edge into a hyperbolic paraboloid (hypar), and to subsequently lock...master thesis 2021
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Germonpré, Flores (author)The collapse of composite stiffened panels in compression is complex and involves the interactions of many different failure modes. However, when the panel is allowed to enter the post-buckling regime, skin-stringer separation due to the interaction of the post-buckling deformations with the skin-stringer interface is often the critical failure...master thesis 2021
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James, Mikhail (author)Structural elements under compression can fail due to instability. Such type of failure may present itself as flexural buckling, which is the sudden change of configuration of one state to another at a critical compressive load. Actual structure characteristics, such as cracks, real joints, sudden changes of flexural stiffness, bracing, and...master thesis 2021
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Gkekas, Athanasios (author)This study is an attempt to develop a preliminary composite fuselage sizing tool for the decision making process utilizing analytical structural analysis equations and a bottom-up cost approach to estimate weight and cost. Previous research by several authors and companies is reviewed in order to define the knowledge gaps that the project is...master thesis 2021
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Karagiannis, Thomas (author)The usage of tanks has been quite common throughout the industry during the last decades. They fall into the category of shell structures and this is how they need to be studied. The focus of this thesis is concentrated on ground based thin cylindrical tanks filled with water made out of steel. Thin shells are susceptible to buckling, a...master thesis 2021
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Gutierrez Prieto, Eduardo (author)Eukaryotic cilia and flagella are some of the best conserved biological structures across species. Giventhe pressure natural selection imposes onto living beings to optimize their body plans, eukaryotic flagella have demonstrated to be an optimal organelle for propulsion at low Reynolds numbers. Therefore, understanding how cilia beat is of...master thesis 2021
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Staats, Laurens (author)Lateral torsional buckling (LTB) of I-beams is an established buckling phenomenon in civil and structural engineering known for causing structural failures. However when a buckling instability is present the structure contains a form of negative stiffness. Due to the observed tendency of I-beams subject to LTB to twist about their longitudinal...master thesis 2021