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 9 of 9 for “"helical coil"”.
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Durability Analysis of Helical Coil Spring in Vehicle Suspension Systems
… research focuses on fatigue life analysis of coil spring component. Static linear analysis is conducted on the 3D model of helical coil spring to investigate deformation and stress responses. Modal analysis evaluates the characteristics of vibration, i.e. natural resonance frequencies and …
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Stiffness Model of a Die Spring
… stiffness matrix of a rectangular cross-section helical coil compression spring. The stiffnesses of the spring are derived using strain energy methods and Castigliano's second theorem. A theoretical model is developed and presented in order to describe the various steps undertaken to calculate …
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Investigation of spring valves
… valves for agricultural applications. A closed helical coil spring, when pressurized, will provide a controlled flow between the coils when extended or laterally deflected a given distance. Tests revealed severe longitudinal oscillations when operating in the extension mode, resulting in a very …
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Novel approach to laser-driven multi-stage ion acceleration
… application of a large amplitude field within a helical coil, which travels synchronously with the ions. This process lends itself to multi-staging, i.e. the sequential application of laser-driven accelerating fields, which is highly promising for significant increase of the accelerated proton …
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Modeling and Simulation of Large Scale Stirred Tank
… mixing vessel with a centrally located helical coil, and agitator. The helical coil is used to heat and cool the contents of the tank and can improve flow circulation. The agitator shaft has two impellers; a radial blade and a hydrofoil blade. The hydrofoil is used to circulate the …
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Design and Characterization of a Theta Pinch Discharge for Atomic Emission Spectroscopy
… by a pulsed, high current discharge through a coil. The coil encloses an insulated discharge vessel containing an ionized plasma at low pressure. The field generated by the high current discharge through the coil causes magnetic compression of the plasma, increasing both the plasma temperature …
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Design and Fabrication of Rotationally Tristable Compliant Mechanisms
… springs are fabricated and modeled, using either helical coil torsion springs or torsion bars. Because the mechanisms are more complex than ordinary springs, simplified models are presented which represent the wireform mechanisms as four-bar mechanisms using the pseudo-rigid-body model. The method …
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Investigation of miniature lithium-bromide/water absorption refrigeration systems
… and explained. This includes the design of the helical coil condenser operating at 35 ℃, and the design of the adiabatic absorber operating at 30 ℃. The optimal exposed surface area of the LiBr/H2O solution to the vapour refrigerant (vapour-solution interface area) inside the adiabatic absorber …
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Dynamic process modelling of the HPS2 solar thermal molten salt parabolic trough test facility
… The economizer and evaporator combined has a helical coil geometry and uses molten salt as a heat transfer fluid, which is unique. Thus, correlations had to be adjusted for the flow characteristics found in the economizer/evaporator. Results from the steady state simulations of the steam cycle …