Axisymmetric
Mostrando 13-24 de 75 artigos, teses e dissertações.
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13. Peripheral Deformation and Buckling of Stainless Steel Hemispherical Shells Compressed by a Flat Plate
Abstract An experimental investigation was performed on stainless steel hemispherical shells under axial compression. Eight kinds of shells with radius-to-thickness ratios that range from 57.1 to 125 were designed and manufactured for this study. The shells were compressed to more than 50% of their radii by a solid flat plate. To avoid contact between the ba
Lat. Am. j. solids struct.. Publicado em: 2016-02
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14. Magneto-Elastic Analysis of an Annular FGM Plate Based on Classical Plate Theory Using GDQ Method
Abstract Using GDQ method, the radial and circumferential stresses in an annular FGM plate with a uniform thickness under a transverse axisymmetric load is investigated. It is assumed that a uniform radial magnetic field acts on the top surface of the plate. The modulus of elasticity E and the magnetic permeability coefficient μ of the plate along its thick
Lat. Am. j. solids struct.. Publicado em: 2016
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15. Elastic analysis of pressurized thick FGM cylinders with exponential variation of material properties using TSDT
AbstractIn this research, the general governing set of differential equations for axisymmetric thick FG pressurized cylinders with exponential function of material properties is derived based on third order shear deformation theory. Afterwards, a general analytical solution of governing equations based on Eigen values problems is conducted for cylinders unde
Lat. Am. j. solids struct.. Publicado em: 2015-06
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16. NEWTONIAN HEATING, THERMAL-DIFFUSION AND DIFFUSION-THERMO EFFECTS IN AN AXISYMMETRIC FLOW OF A JEFFERY FLUID OVER A STRETCHING SURFACE
AbstractIn this communication we have investigated the phenomenon of Newtonian heating under the application of a uniform magnetic field when thermal-diffusion "Soret" and diffusion-thermo "Dufour" effects appear in the energy and concentration equations in a flow of a Jeffery fluid. The flow is induced by the stretching of a disk in the radial direction. Th
Braz. J. Chem. Eng.. Publicado em: 2015-06
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17. NOVEL SIMILARITY-SOLUTION WHICH IS APPLICABLE FOR FREE CONVECTION OVER A BODY OF ARBITRARY SHAPE: THERMAL NON-EQUILIBRIUM IN A POROUS MEDIUM
Abstract The study of the natural convection flow and heat transfer from hot surfaces in a porous medium has been of considerable interest in energy-related engineering problems. This paper is concerned with the free convection heat transfer over an arbitrary hot surface in a porous medium. It is assumed that the fluid and solid phases are not in local therm
Braz. J. Chem. Eng.. Publicado em: 2015-03
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18. Thermal effects on the stability of circular graphene sheets via nonlocal continuum mechanics
Recently, graphene sheets have shown significant potential for environmental engineering applications such as wastewater treatment. Different non-classical theories have been used for modeling of such nano-sized systems to take account of the effect of small length scale. Among all size-dependent theories, the nonlocal elasticity theory has been commonly use
Lat. Am. j. solids struct.. Publicado em: 2014-08
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19. Magnetohydrodynamic axisymmetric flow of a third-grade fluid between two porous disks
This paper investigates magnetohydrodynamic axisymmetric flow of a third-grade fluid between two porous disks. The governing partial differential equations are transformed into ordinary differential equations by similarity transformations. The resulting non-linear problem is solved by a homotopy analysis method (HAM). The effects of dimensionless parameters
Braz. J. Chem. Eng.. Publicado em: 2013-09
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20. Vórtices no estacionarios en un vaso de agua
Who has not experienced the formation of a vortex or a whirlpool in a glass of milk when trying to dissolve cocoa in it by stirring the liquid with a spoon? In this paper, we analyse the mechanical aspects of the unsteady vortex formed in swirling water that was stirred with a spoon around a central axis in a cylindrical glass. We show that the formed unstea
Rev. Bras. Ensino Fís.. Publicado em: 2013-09
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21. The use of an axisymmetric formulation of the Finite Volume Method for the thermal analysis of the retina and ocular tissues following implantation of retinal prosthesis
This study analyzes the heat transfer in human eyes following implantation of retinal prostheses using an axisymmetric formulation of the Finite Volume Method. The model used consisted of a vertex centered unstructured grid finite volume method in an edge-based data structure and an explicit time integration. The results of the finite volume thermal analysis
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-09
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22. Otimização de forma de cascas axissimétricas utilizando diferenciação automática / Shape optimization of axisymmetric shells using automatic differentiation
Cascas constituem um tipo de estrutura que possui uma vasta quantidade de aplicações, incluindo, por exemplo, fuselagens de aviões e submarinos, silos metálicos, coberturas de hangares, estruturas de prédios e componentes automotivos e aeroespaciais. Os grandes vãos possíveis de serem cobertos, baixo peso e alta rigidez são algumas das vantagens obti
Publicado em: 2011
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23. A study of axi-symmetric waves through an isotropic thermoelastic diffusive medium
The paper deals with the propagation of axial symmetric cylindrical surface waves in a cylindrical bore through a homogeneous isotropic thermoelastic diffusive medium of infinite extent. The three theories of thermoelasticity namely, Coupled Thermoelasticity (CT), Lord and Shulman (L-S) and Green and Lindsay (G-L) are used to study the problem. The frequency
Computational & Applied Mathematics. Publicado em: 2011
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24. Identification of non-newtonian rheological parameter through an inverse formulation
In this work, we introduce an inverse formulation to be applied in the identification of a rheological parameter associated to non-Newtonian fluids. It is built upon a creeping flow through a 4 to 1 axisymmetric abrupt contraction. The fluid is modeled by the Generalized Newtonian Fluid constitutive equation. The viscosity function is based on the one propos
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-06