نتایج جستجو برای: isotropic material
تعداد نتایج: 384944 فیلتر نتایج به سال:
Thermoelastic Analysis of Functionally Graded Hollow Cylinder Subjected to Uniform Temperature Field
This paper deals with the determination of displacement function and thermal stresses of a finite length isotropic functionally graded hollow cylinder subjected to uniform temperature field. The solution of the governing thermoelastic equation is obtained, as suggested by Spencer et al. for anisotropic laminates. Numerical calculations are also carried out for FGM (Functionally graded material...
in this paper, the deformation of a thick-walled circular cylindrical shell of incompressible isotropic elastic material is considered. the shell, which is made of three-term strain energy function is subjected to the combined external and axial loading pressure. in order to obtain the relevant eigenvalues, which is the main objective of the work, the incremental equilibrium equations are so...
Positions of the phenyl hydrogens were held fixed during refmement. Isotropic thermal parameters for the methyl hydrogens were set a t 1.2 times the initial equivalent isotropic thermal parameter of the methyl carbon and were not refined. Remaining hydrogen isotropic thermal parameters were refined. An extinction correction was applied. The absolute configuration was confirmed in the refinement...
The paper discusses the problem of manufacturability of the minimum compliance designs of the structural elements made of two kinds of inhomogeneous materials: the isotropic and cubic. In both the cases the unit cost of the design is assumed as equal to the trace of the Hooke tensor. The Isotropic Material Design (IMD) delivers the optimal distribution of the bulk and shear moduli within the de...
A phenomenology of isotropic magnetohydrodynamic (MHD) turbulence subject to both rotation and applied magnetic field is presented. It is assumed that the triple correlation decay time is the shortest between the eddy turn-over time and the ones associated to the rotating frequency and the Alfvén wave period. For Pm=1 it leads to four kinds of piecewise spectra, depending on four parameters: in...
In this research, electroplated magnetically isotropic and anisotropic soft alloys and screen-printed soft ferrites applicable to micromachined micromagnetic devices are fabricated and characterized using in situ measurement techniques. Appropriate magnetic materials and deposition methods, such as electroplating and screen-printing techniques, are examined and material test structures are fabr...
It is a common issue in solid deformation simulation that material models will collapse and even permanently invert. In this paper, we present an algorithm for finite element simulation of isotropic tetrahedral mesh that is capable of robustly restoring from inverted configuration to uninverted state in the deformation process. We perform singular value decomposition of deformation gradient to ...
Nowadays, electromagnetic metamaterials is a rapidly growing research domain involving electromagnetism, microwave and millimetre wave technology, optics, material technology and nanotechnology. In particular, paper concerns about the utilization of split ring resonators in negative permeability meta materials, the concept and the production of an isotropic negative permeability medium, an isot...
We study the dynamicmathematical model for an infinitely long cylinder composed of an isotropic incompressible Ogden material with a microvoid at its center, where the outer surface of the cylinder is subjected to a uniform radial tensile load. Using the incompressibility condition and the boundary conditions, we obtain a second-order nonlinear ordinary differential equation that describes the ...
This review paper deals with the dielectric and elastic characterization of composite materials constituted by dispersions of nonlinear inclusions embedded in a linear matrix. The dielectric theory deals with pseudo-oriented particles shaped as ellipsoids of revolution: it means that we are dealing with mixtures of inclusions of arbitrary aspect ratio and arbitrary non-random orientational dist...
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