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ABOUHEIDARI, SINA (author)
Compliant mechanisms, particularly helicoidal shell joints, present intriguing possibilities in mechanical design with applications in medical devices, robotics, automotive, and aerospace engineering. This research focuses on the synthesis of nonlinear torque-angle profiles using a compliant helicoidal shell mechanism such as gravity-balancing...
master thesis 2024
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ZHOU, SIYANG (author)
Shoulder exoskeleton is a popular solution to work-related shoulder disorders and muscle fatigue. With a wide range of exoskeletons designed, a comprehensive report on how the use of shoulder exoskeletons changes shoulder biomechanics is still missing. In this project, the impact of exoskeletons on shoulder biomechanics was investigated with the...
master thesis 2023
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Huijsmans, Tom (author)
The exploration of compliant mechanisms, especially those providing linear motion, has become a central focus in recent engineering research. These mechanisms, characterized by their monolithic bodies and reduced component interactions, present an attractive alternative to traditional rigid mechanisms, having reduced friction, decreased energy...
master thesis 2023
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LEE, Tzu (author)
This study proposes a novel design of monolithic compliant variable torsional stiffness (VTS) mechanism whose stiffness can be tuned continuously. This mechanism is then used to create a compliant variable stiffness (VS) ball joint. This compliant VS ball joint can be beneficial in various applications such as exoskeletons, prostheses, and bio...
master thesis 2023
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Lemmens, Cas (author)
<br/>This thesis report presents research on small walking robots. The report begins with an introduction that explains the project’s origin, outlines the project’s goal, and provides an overview of the report’s contents. Following the introduction, a literature study is conducted to investigate the current state-of- the-art steering mechanisms...
master thesis 2023
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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
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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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van Driessen, Laurens (author)
Increasing demand for higher precision machines is arising in the high-tech industry. Linear guides are often used to establish this highly accurate and highly repeatable motion. The amount and variation in preload play an important role in the total motion errors. The objective of this paper is to investigate the relation between preload and...
master thesis 2022
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van der Burgh, Bas (author)
Duchenne Muscular Dystrophy (DMD) patients suffer from a severe form of progressive muscular weakness. Consequently, as the disease progresses these patients become more and more dependent on assistive devices for their daily activities. For instance lifting their arms against gravity already becomes challenging. So far, a considerable amount of...
master thesis 2022
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Linssen, Jonathan (author)
A broad range of bistable, multi-stable and neutrally stable compliant mechanisms have been developed over the years. These non-monostable systems show great potential for deployment in e.g. the medical, the manufacturing and the precision industry. Often the presence of prestress is a requirement for obtaining non-monostability within the realm...
master thesis 2022
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Houweling, Stijn (author)
This project presents a compliant slender mechanism with a low axial-bending stiffness ratio. This can be used in passive exoskeletons. Passive exoskeletons can assist people with their work by preventing injuries. Currently exoskeletons uses sliders to account for the extension of the spine when bending, but this could be uncomfortable. The...
master thesis 2022
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Hogervorst, Dion (author)
This thesis presents the design of a quasi-compliant spherical joint which is neutrally stable in two DoF and has a remote center of rotation. Such a joint can be used, for example, as an exoskeleton's shoulder joint. The foundation of this joint design lies in previous work that has succeeded in designing a compliant spherical joint with a...
master thesis 2022
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Ahmad, Hanzalah (author)
Active materials are a type of material that can respond to external stimuli and change their physical properties as a response. Neutrally stable compliant mechanisms are a class of compliant mechanisms that use the flexibility of their members to deform and maintain that deformed configuration without requiring external work. In order to make a...
master thesis 2022
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van der Lans, Daan (author)
Elastically neutrally stable structures are compelling within the field of compliant mechanisms, since no force is required to deform them. Several examples of this state of elastic neutral stability exist, which often use equal but opposing structures to balance internal forces. This thesis is on the design of an active neutrally stable...
master thesis 2021
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Niezen, Robin (author)
Miniaturizing mechanical tessellations with rigid origami behavior is difficult since rigid origami can only be approached in real mechanical systems. Rigid-origami means that the fold-lines have zero stiffness, and the facets have infinite stiffnes. However, zero stiffness and infinite stiffness can physically not be obtained. To approach the...
master thesis 2021
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van Wijk, Edward (author)
The goal of this thesis is to look into the possibilities of making origami neutrally stable. This is wanted because the inherent stiffness of origami mechanisms introduces unwanted artifacts such as a higher actuation force, and the mechanism not following the theoretical kinematics. By making an origami mechanism neutrally stable the inherent...
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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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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Kempen, Sander (author)
This paper presents a manufacturing method for a zero-stiffness compliant mechanism to be used as a flexible head support. The manufactured design consists of two curved, thin-walled U-beams made of high strength steel. The beams are prestressed in opposite directions to obtain zero torsional stiffness so that rotation of the head is allowed....
master thesis 2021
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