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 222 for “"clutch"”.
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RIDING THE CLUTCH
A collection of short stories.
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RIDING THE CLUTCH
A collection of short stories.
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Design and Test of an Automotive Clutch Actuation
… of a automatic system for automotive automatic clutches. In this field of study there are some constraint to take into account and through them it is possible to find the best technological solution. The system under consideration is characterized as electromechanical, with an electric motor …
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Friction Characteristic Prediction within a Carbon-Carbon Race Clutch
Clutches are devices for disengaging the connection between the driveshafts and power units, and hence transferring rotational energy. Two inertias travelling with different angular velocities are brought to the same speed by engaging the clutch. The dissipation of energy during the operation …
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Does nest size constrain clutch size? A tropical-temperate test
The smaller clutch size of tropical as opposed to north temperate birds has intrigued researchers for a long time. An untested hypothesis posits that higher nest predation in the tropics favors smaller nests thereby constraining clutch-size. We tested this hypothesis by conducting an experiment to …
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Does nest size constrain clutch size? A tropical-temperate test
The smaller clutch size of tropical as opposed to north temperate birds has intrigued researchers for a long time. An untested hypothesis posits that higher nest predation in the tropics favors smaller nests thereby constraining clutch-size. We tested this hypothesis by conducting an experiment to …
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Slip clutch design for position sensitive systems in marine environments
… improvement was the torque limiting slip clutch used in both the pan and tilt drive sections. The unit selected induced positioning errors resulting from backlash inherent to its design. The backlash encountered is unavoidable when using the type of slip clutch selected, as it is with many …
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Fitness Consequences of Clutch Size Decisions and Mate Change in Black Brant
… chapter, I used experimental manipulations of clutch and broods sizes (i.e., the number of goslings leaving the nest) to understand if the maximal clutch size laid by brant (i.e., 5 eggs) is under ultimate control as a result of tradeoffs between reproduction and residual reproductive value of …
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Synchroniser analysis and shift dynamics of powertrains equipped with dual clutch transmissions
Transient dynamic investigations of dual clutch transmission equipped powertrains are conducted in this thesis through the development and application of torsional multi-body models incorporating multiple nonlinearities. Shift control studies are performed using detailed hydraulic model integrated …
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Finite Element Analysis of Thermal Buckling in Automotive Clutch and Brake Discs
<p>Thermal buckling behavior of automotive clutch and brake discs is studied by making the use of finite element method. It is found that the temperature distribution along the radius and the thickness affects the critical buckling load considerably. The results indicate that a monotonic …
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Buckling and friction-based linear motion clutch with application to medical devices
Improperly inserted and positioned needles and catheters often require repeated attempts at correct placement causing injury to adjacent structures or infusions into inappropriate spaces. Existing catheter insertion methods do not uniformly provide needle tip location feedback, nor prevent the …
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Study of drag torque in a two-speed dual clutch transmission electric vehicle powertrain system
… (drive range). The employment of two-speed dual clutch transmission (DCT) in electric vehicles is likely to improve average motor efficiency and range, and even can reduce the required motor size. In order to comprehensively improve the electric vehicle powertrain system efficiency, it is …
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Ecological and Evolutionary Consequences of Variation in Clutch Size in Asteromyia Carbonifera (o.s.) (Diptera: Cecidomyiidae)
… laid at each ovipositional site is termed the "clutch size." Midge larvae are potential hosts to five species of hymenopterous parasitoids. Three aspects of the plant/gall-maker/parasitoid community are examined in light of current theories in evolutionary ecology: (1) the selective pressures …
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Design of a high torque, lightweight clutch for use in an exoskeleton to augment human running
… is the creation of a lightweight, high torque clutch that can endure the forces associated with ground impact and stance phase in running and also disengage to permit a natural swing phase. The clutch makes use of radial, ratcheting clutch plates, a planetary gearbox, and a novel mechanical …
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Consequences of avian parental incubation behavior for within-clutch variance in incubation temperature and offspring behavioral phenotypes
… species to investigate how factors (disturbance, clutch size, ambient temperature) that influence parental demands may affect parental incubation behavior, physiology, and egg temperatures, and subsequently how egg temperatures affect offspring behavior and physiology. In a field experiment, I …
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Design and Implementation of a Clutch and Brake System for a Single Wheel Indoor Tire Testing Rig
… goal of this work is to design and implement a clutch and brake system on the single tire Terramechanics rig of Advanced Vehicle Dynamics Laboratory (AVDL) at Virginia Tech. This test rig was designed and built to study the performance of tires in off-road conditions on surfaces such as soil, …
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Design and control of a clutch for a minimally-actuated biped based on the passive-dynamic simple walker
… well as for more control capabilities. A simple clutch mechanism is developed for such systems to allow intermittent control of otherwise passive joints, allowing controllers to exploit the passive or actuated control when desired. The clutch is tested on a hip actuated simple 3D walker to …
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High-Torque Capacity Compliant Centrifugal Clutches
… high-torque-capacity floating opposing arm clutches that are manufactured with standard economical manufacturing processes, while maintaining critical performance characteristics. Contact engagement speed and torque capacity models were created for the Hoffco-Comet, floating-opposing-arm …
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