Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 45 for “"pulley"”.
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The load/deflection behavior of pretensioned cable/pulley transmission mechanisms
… transmission option; closed circuit cable/pulley transmissions. Cable drives are well suited to force and position control applications because of their unique combination of zero backlash motion, high stiffness and low friction. We begin the modelling process by determining the equilibrium …
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The load/deflection behavior of pretensioned cable-pulley transmission mechanisms
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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Knotless bidirectional barbed versus smooth polypropylene three-loop pulley sutures for repair of canine gastrocnemius tendon
… placed in the clinically utilized three-loop pulley (3LP) suture pattern in an in-vitro model for gastrocnemius tendon repair. Common calcaneal tendons and calcaneii were obtained as paired units from pelvic limbs of adult, sexually intact mixed breed dogs euthanized for unrelated reasons and …
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Rock Climber Awareness of the A2 Pulley Injury and Associated Safety Practices in Recreational Indoor Bouldering Gyms
An injury to the A2 pulley is the most commonly sustained injury among all climbers, especially in recreational indoor boulderers who repetitively perform strenuous movement with limited safety equipment. The A2 pulley is a ligament in the fingers that supports tendons which allow for finger …
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A Computational Iteration Method to Analyze Mechanics of Timing Belt Systems with Non-Circular Pulleys
… consisting of a toothed belt and multiple pulleys, are used in many mechanical devices, especially in the internal combustion engine to synchronize the rotation of the crankshafts and the camshafts. When the system operates, the belt teeth will be transmitted by the pulley teeth meshed with …
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Microangiographic comparison of the effects of the three-loop pulley and six strand Savage tenorrhaphy techniques on the equine superficial digital flexor tendon
… commonly used techniques, such as the three-loop pulley (3LP). A review of tendon vasculature across species and healing characteristics of tendons highlights the importance of intrinsic tendon vasculature in the healing process. Using tenorrhaphy techniques that preserve this vasculature may …
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Mechanical development of an actuation system for a parabolic solar trough collector
… in-depth analysis into two of them, the idler pulley scheme was chosen. This mechanism uses a double rod end hydraulic actuator connected to wire rope wrapped around a capstan drum and an idler pulley. The model was optimized for mechanical performance, and it is expected to be a more cost …
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Nonlinear material modeling and finite element analysis of V-ribbed belts
… finite element model was built to study the belt-pulley contact interaction."--Abstract, page iv.
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Low-Cost Fiber Extrusion Device for Educational Purposes: Redesign, Manufacture, and Computer Vision Integration
… reduction, size, and overall functionality. Pulley variations were introduced to enhance fiber stability. Cooling strategies and pulley system's flexibility were optimized for the stability of the fiber, and noise reduction measures focused on the gear system. The camera system underwent …
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Development of an actively compliant underwater manipulator
… sensorimotor working through a multi-stage cable/pulley transmission. The manipulator mechanism and wiring is fully enclosed by cast aluminum housings filled with mineral oil. Mineral oil functions to pressure compensate and lubricate the system. Exterior surfaces of the manipulator are smooth and …
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Evaluace volejbalového podání ze země a z výskoku s následným porovnáním při simulaci podání při stahování kladky pomocí povrchové elektromyografie
… use of the jump. Key words: Volleyball, service, pulley, EMG analysis, kinematic analysis. 6
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Computer-assisted synthesis of wrapping cam mechanisms
… for eight configurations of wrapping cam-pulley or wrapping cam-sprocket mechanisms. This software package has a graphical user interface to give intuitive interactions. The modularity of the software package increases the flexibility for future program extension. This thesis also …
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Design of a re-configurable test stand for a multi degree of freedom compliant robot prototype
… utilizes a stepper motor and a counterweighted pulley system to apply a compressive force through a single monofilament line. The test stand can accommodate prototypes up to 25 cm in length, and can apply a compressive force up to 6.5N with a resolution of ±0.04N. The displacement can be …
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Design and analysis of hydraulically driven actuation system For a parabolic solar trough
… The rotational motion is achieved through a pulley and a wire rope system, actuated by a single, double action double rod cylinder. As this project funding was received from our sole sponsor, an Italian multinational energy company, during the design process the ultimate goal of eventual …
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George Herbert's restlessness: Spiritual fulfillment or spiritual estrangement?
… George Herbert's perspective is framed in "The Pulley." His view that restlessness is a divine treasure is unique to him and is manifested in various avenues. First, restlessness as a virtue is manifested in his own writing. Writing poetry was a mental form of restlessness that allowed Herbert …
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Development and design of an adjustable elastic support system for ensuring safety while learning physical skills
… these springs to a harness on the user via a pulley located above the user. In testing the system, a variety of ground and jumping skills were attempted on a snowboard. The system maintains an upward force on the user, which helps support the user on the ground, provides some lift during the …
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Design for implementation : fully integrated charging & docking infrastructure used in Mobility-on-Demand electric vehicle fleets
… arm, which is composed of a spring-loaded pulley mechanism. This paper discusses the design and manufacturing processes for the charging connector and retractable arm, while elaborating on the overall functionality of smartCharge. Finally, the implementation strategy and key considerations …
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The design and fabrication of a passive and continuously repositionable joint
… relies on the binding of an eccentric cam and pulley, and is of interest because these key components are geometrically simple in comparison to toothed mechanisms. The reduced complexity of this solution is expected to lower the manufacturing cost of this type of joint and increase the …
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A design for a flexible, low-cost rigging block for black-box theaters by Michael J. Shields.
… while providing a safety factor of 10:1. A dual-pulley arrangement allows for flexibility in the placement of rigging positions and better utilization of the available space. Top and bottom pulleys allow for lines to be routed above the level of the lighting grid. The independent swiveling of the …
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An experimental investigation into the most prominent sources of uncertainty in wave tank testing of floating offshore wind turbines
… were used for this comparison, a simple weighted pulley system, a constant thruster and the software in the loop system developed by CENER. The comparison was conducted to assess the influence of wind emulation systems on the uncertainty of platform response It was found that the effects of each …
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