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 12 of 12 for “"Elliptical Cylinder"”.
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Response and Failure of Internally Pressurized Elliptical Composite Cylinders
… to study the response of internally pressurized elliptical composite cylinders with clamped boundaries. Using a geometrically linear analysis and the solution scheme, the response of a quasi-isotropic elliptical cylinder is compared with the response of a quasi-isotropic circular cylinder in …
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COMPUTATIONAL FLUID DYNAMICS SIMULATION OF RAIN-WIND-INDUCED VIBRATION OF STAY CABLES
… literatures are two-dimensional, and a circular cylinder has been widely adopted to represent the stay cables. Thus, only the wind flow normal to the stay cable axis has been taken into account. Such simplifications may be inappropriate, since some key factors are completely ignored, such as the …
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Improvement of the axial buckling capability of elliptical cylindrical shells
… expressions for the buckling stress in terms of cylinder geometry and orthotropic material properties are presented, the particular closed form depending on the specific character of the orthotropic material relative to the GMI material. With the formulation, the specific character of the …
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Additive manufacturing of novel metal microwave components for space application
… multimode waveguide filters using de formed elliptical cavity resonators (four variations of resonators and topologies), dual band multimode waveguide filters using elliptical cylinder cavity resonators, multiband waveguide filters using an in-band transmission zeros approach (four variations …
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Touch at a distance : underwater object identification using pressure sensors
… with pressure sensors passing a static cylinder. The results show that location and shape informations of an elliptical cylinder can be successfully inferred from experimental pressure measurements. Performance of the proposed method for object identification using pressure sensors are …
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The capillary interaction between objects at liquid interfaces
… First a system is considered where circular cylinders are immersed in a liquid. The meniscus shape is determined, and the force of interaction between a pair of cylinders is calculated as a function of the distance between them. The results are compared with previously published asymptotic …
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A novel boundary element method for low Reynolds number external flow of biological fluid dynamics
… the problems of steady flow past a circular cylinder, steady flow past an elliptical cylinder, and the motion of a generic tail-like body are investigated. The theoretical treatment by Chadwick (Chadwick, 2013) is detailed and elaborated upon. Aboundary integral representation that matches an …
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Use of Material Tailoring to Improve Axial Load Capacity of Elliptical Composite Cylinders
… improvement of the axial buckling capacity of elliptical composite cylinders through the use of a circumferentially-varying lamination sequence. The concept of varying the lamination sequence around the circumference is considered as a viable approach for off-setting the disadvantages of having …
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Torsion of Elliptical Composite Cylindrical Shells
The response of elliptical composite cylindrical shells under torsion is studied. The torsional condition is developed by rotating one end of the cylinder relative to the other. Prebuckling, buckling, and postbuckling responses are examined, and material failure is considered. Four elliptical cross …
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Three dimensional modelling of Electrical Impedance Tomography
… analytical solution for a finite right circular cylinder (which approximately models the human thorax) on which two electrodes have been placed, is derived. It will be shown that the analytical solution has two different forms. Results will be presented detailing the convergence performance of …
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Vibration Characteristics of Thin-Walled Noncircular Composite Cylinders
… noncircular fiber-reinforced composite cylinders, specifically cylinders with elliptical cross sections, are investigated. Of interest is the variation of the lowest natural frequency, the so-called fundamental frequency, as a function of wall laminate properties, cross-sectional …
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Nonlinear Dynamics of Warped Astrophysical Discs
… fluid equations for a non-selfgravitating elliptical cylinder within a local shearing sheet. By restricting attention to flow fields which are a linear function of the coordinates, we capture the lowest order global motions (tilting, shearing and breathing modes) and reduce the dynamics to …