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Showing 1 to 13 of 13 for “"noncircular"”.
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On the Dynamics of Noncircular Accretion Discs
The classical picture of an accretion disc is of a geometrically thin, nearly axisymmetric, fluid flow undergoing supersonic circular motion and slowly accreting due to angular momentum transport by the disc turbulence. There are, however, strong theoretical and observational grounds for …
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Sound scattering by cylinders of noncircular cross section
… of a plane wave due to an infinite cylinder of noncircular cross section. Both impenetrable and penetrable :fluid boundary condi tions will be treated for several types of cross sections and for a large frequency range. This new method requires the conformal mapping of both the exterior and …
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Sound scattering by cylinders of noncircular cross section
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994.
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Vibration Characteristics of Thin-Walled Noncircular Composite Cylinders
The lowest natural frequencies of thin-walled 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 …
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Control of Multiple Degree of Freedom Fast Tool Stages for Noncircular Turning Process
… research is to extend the capability of the noncircular turning process. The major work of this research can be divided into three sections: (1) A prototype variable rake angle mechanism has been developed and controlled. The objective of the variable rake angle mechanism is to provide …
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Micromechanics of crenulated fibers in carbon/carbon composites
The influence of crenulated noncircular fibers on the micromechanical stress states due to a transverse strain and to a temperature change in carbon/carbon composites is examined using the finite element method. Stresses at the interface of both fully bonded and fully disbonded fibers having two …
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HYDRAULIC PERFORMANCE OF GEOSYNTHETIC LINERS IN TAILINGS STORAGE FACILITIES
… GMB. Changing the hole shape from circular to noncircular increases the leakage. There is no significant variation among leakage through triangular, diamond, and square holes, whereas the maximum increment is observed for the rectangular hole. With a constant rectangular length of 100 mm and …
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A Computational Iteration Method to Analyze Mechanics of Timing Belt Systems with Non-Circular Pulleys
… torques generated by the varied radius of noncircular pulley are calculated by this computational model to cancel the undesired external cyclic torque, which will increase the life of timing belts.
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Numerical simulation of gas-lubricated journal bearings for microfabricated machines
… advantage reported in the literature for noncircular bearings can be canceled by microfabrication constraints. The stability advantage, however, survives. Tapered axial clearance is shown to have an extremely deleterious effect on performance while bowed clearance proves less detrimental. …
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Computational Studies on the Effective Properties of Two-Phase Heterogeneous Media
… respectively. These results show that the noncircular shapes and corner angles in the disk geometry tend to increase the interparticle connectivity and therefore reduce the percolation point. For elliptical plate, the percolation threshold is found to decrease moderately when the aspect …
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An analytical and experimental investigation of the response of elliptical composite cylinders
An analytical and experimental investigation of the response of composite cylinders of elliptical cross-section to axial compression and internal pressure loadings is discussed. Nine eight-ply graphite-epoxy elliptical cylinders, three layups for each of three cross sectional aspect ratios, are …
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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 …