Searched for: subject%3A%22Torsion%22
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Mătieş, Georgiana (author)
The rudder is one of the few aircraft primary composite structures that experience relatively low external aerodynamic loading during regular flight conditions. This renders the rudder shell the perfect candidate to study the possibility of introducing sustainable materials with lower mechanical properties in primary structures. However, high...
master thesis 2023
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Muhammad Abrar Aulia, Abrar (author)
The offshore monopile decommissioning demand will become definite in the coming years. Our responsibility is to ensure the rights and duties of other legitimate uses by completely removing the ageing monopile from the seabed to continuously redeveloping offshore wind farms within the same location. The growing number of past, present, and future...
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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van Nes, Sjors (author)
In this work, the possibilities to approach various nonlinear moment-angle characteristics with a kinematically indeterminate rigid body balancer with torsion springs are examined. These torsion springs are mounted on the axes that intersect the rigid bodies. The rigid body balancer is coupled to an inverted pendulum. Although the kinematic...
master thesis 2022
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Richardson, Anthony (author)
A structural firm will not invest a large sum of money in early design fase on a wind tunnel aeroelastic model to determine the displacements, forces, and moments when the dimensions of a building have only been estimated because the outcomes are only valid for that specific model. It is well-known that the outcomes are hard to determine...
master thesis 2022
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van Essen, Koen (author)
Fatigue strength is typically a governing limit state for marine structures. Predicting an accurate fatigue lifetime is important for structures (e.g. wind turbines) that are supposed to be out at sea for decades. It is valuable for all type of structures that encounter stochastic sea loadings to optimise the design so that fatigue failure is...
master thesis 2021
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Gerlach, Robyn (author)
This report proposes a concept for an I-profile curved beam compliant transmission system. The application of this system can be as a hip connection within a passive exoskeleton in which it transfers the walking motion from one leg to another. To obtain the desired behavior the torsion stiffness is reduced and the amount of work needed to move...
master thesis 2021
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Wilgenburg, Gert (author)
Torsional moments and shear stresses are not calculated correctly in the framework analysis software SCIA Engineer for cross-sections with a shear centre eccentricity. The aim of this research is to analyze and solve this problem.
bachelor 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
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Mulder, Dies (author)
The mechanism presented in this paper generates a partially negative stiffness characteristic, which is suitable for the balancing of a pendulum in a gravity field. The mechanism uses deformation in the axial direction of the base joint to store potential energy. The proposed design is located next to the base joint of the pendulum in an area...
master thesis 2020
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van der Zalm, Joost (author)
The goal of the research described in this thesis was to investigate the basis of dissipation dilution as well as make it comprehensible. In the written literature we could find that the kinetic energy of an oscillating beam is stored into two types of potential energy~\cite{Kippenberg, Kotthaus}. A dissipative bending component and a...
bachelor thesis 2019
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Bresser, Djonno (author)
In the past decades, great progress has been made in analyzing lateral torsional buckling of slender beams. The phenomena has been accurately described by differential equations, closed form solutions are available for specific cases and the solution for any load and any boundary condition can be obtained by finite element analysis. Timber and...
student report 2019
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Wouterlood, Bob (author)
With the arrival of the Eurocode, the calculations regarding shear resistance, have become increasingly conservative compared to former concrete standards. For example in Voorschriften Beton 1974 (VB 74), a former concrete standard, a shear resistance combination of concrete, stirrups and prestress was allowed. Whereas the Eurocode assumes the...
master thesis 2018
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van Saase, Mark (author)
Zeeland, located in the south west of The Netherlands, has suffered major casualties and damage due to the flood in 1953. After the disaster, the Dutch Government appointed the so-called Deltacomittee, provided with the task of advising on the execution of the Deltaplan. As part of the Deltaplan, North Sea estuaries has been closed off from the...
master thesis 2018
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Moors, G. (author)
This thesis continues the work performed by Ferreira and Almeida on the topic of weight and cost reduction of composite multi-spar torsion-bending boxes. The goal is to find the influence of changes to the structural configuration on the resulting weight of said torsion-bending boxes. Using analytical methods, combined into the BoxSolver MATLAB...
master thesis 2016
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Teunisse, N.K. (author)
Micro air vehicles (MAVs) are small aircraft that are promising for search and rescue missions or remote observations of hazardous or inaccessible areas. Currently one of the problems MAVs face is the limited action radius. To increase the action radius, a more energy efficient MAV is needed. This can be achieved by exploiting the resonance of...
master thesis 2015
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Van der Hoeven, T.R.M. (author)
Locking mechanisms are used in a wide range of applications including energy saving mechanisms in the field of robotics. In this thesis a new class of locking mechanisms is investigated: a combination between a singular- and a friction locking mechanism (singular-friction locker) which is statically balanced with one additional spring. This...
master thesis 2015
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Saleh, K. (author)
In dit Bachelor eindwerk is onderzoek gedaan naar de effectieve kiplengte van liggers met rechthoekige doorsneden. In een voorgaand eindwerk is hier al onderzoek naar gedaan door Roeland van Straten. Daarom zijn er bepaalde delen uit het desbetreffende onderzoek overgenomen ter ondersteuning van dit eindwerk. Het gaat hierbij om de paragrafen 1...
bachelor thesis 2012
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Bijlsma, B.G. (author)
A gravity equilibrator is a statically balanced system which is designed to counterbalance a mass such that any preferred position is eliminated and thereby the required operating effort to move the mass is greatly reduced. Current spring-to-mass gravity equilibrators are limited in their range of motion as a result of design limitations. An...
master thesis 2012
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Van Vliet, E. (author)
In skew bridges torsion occurs. This leads to a substantial amount of reinforcement stirrups. Minalu already did research to torsion in bridge decks with different types of finite element models. The question when torsion cracks will really occur is still unanswered. This question is the main subject of this research. The focus of the research...
master thesis 2012
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