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A unified method for stresses in FGM sphere with exponentially-varying properties
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 Title & Authors
A unified method for stresses in FGM sphere with exponentially-varying properties
Celebi, Kerimcan; Yarimpabuc, Durmus; Keles, Ibrahim;
 Abstract
Using the Complementary Functions Method (CFM), a general solution for the one-dimensional steady-state thermal and mechanical stresses in a hollow thick sphere made of functionally graded material (FGM) is presented. The mechanical properties are assumed to obey the exponential variations in the radial direction, and the Poisson`s ratio is assumed to be constant, with general thermal and mechanical boundary conditions on the inside and outside surfaces of the sphere. In the present paper, a semi-analytical iterative technique, one of the most efficient unified method, is employed to solve the heat conduction equation and the Navier equation. For different values of inhomogeneity constant, distributions of radial displacement, radial stress, circumferential stress, and effective stress, as a function of radial direction, are obtained. Various material models from the literature are used and corresponding temperature distributions and stress distributions are computed. Verification of the proposed method is done using benchmark solutions available in the literature for some special cases and virtually exact results are obtained.
 Keywords
complementary functions method;thick sphere;functionally graded materials (FGMs);exponentially varying properties;
 Language
English
 Cited by
1.
Dynamic response of curved Timoshenko beams resting on viscoelastic foundation,;

Structural Engineering and Mechanics, 2016. vol.59. 4, pp.761-774 crossref(new window)
1.
Transient analysis of axially functionally graded Timoshenko beams with variable cross-section, Composites Part B: Engineering, 2016, 98, 472  crossref(new windwow)
2.
Dynamic response of curved Timoshenko beams resting on viscoelastic foundation, Structural Engineering and Mechanics, 2016, 59, 4, 761  crossref(new windwow)
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