The determination of the thermo-mechanical stress field in and around a spherical/cylindrical inhomogeneity surrounded by a functionally graded (FG) coating, which in turn is embedded in an infinite medium, is of interest. The present work, in the frame work of Boussinesq/Papkovich-Neuber displacement potentials method, discovers the potential functions by which not only the relevant boundary value problems (BVPs) in the literature, but also the more complex problem of the coated inhomogeneities with FG coating and sliding interfaces can be treated in a unified manner. The thermo-elastic fields pertinent to the inhomogeneities with multiple homogeneous coatings and various combinations of perfect/sliding interfaces can be computed exactly. Moreover, when the coatings are inhomogeneous, as long as the spatial variation of the thermo-elastic properties of the transition layer is describable by a piecewise continuous function with a finite number of jumps, an accurate solution can be obtained. The influence of interface conditions, stiffness of the core, spatial distributions of thermal expansion coefficient and shear modulus of FG coating, and loading condition on the stress field will be examined.
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e-mail: shodja@sharif.edu
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May 2007
Technical Papers
Thermoelastic Fields of a Functionally Graded Coated Inhomogeneity With Sliding/Perfect Interfaces
Hamed Hatami-Marbini,
Hamed Hatami-Marbini
Department of Mechanical, Aerospace and Nuclear Engineering,
Rensselaer Polytechnic Institute
, Troy, NY 12180
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Hossein M. Shodja
Hossein M. Shodja
Department of Civil Engineering, Center of Excellence in Structures and Earthquake Engineering,
e-mail: shodja@sharif.edu
Sharif University of Technology
, P. O. Box 11365-9313, Tehran, Iran
Search for other works by this author on:
Hamed Hatami-Marbini
Department of Mechanical, Aerospace and Nuclear Engineering,
Rensselaer Polytechnic Institute
, Troy, NY 12180
Hossein M. Shodja
Department of Civil Engineering, Center of Excellence in Structures and Earthquake Engineering,
Sharif University of Technology
, P. O. Box 11365-9313, Tehran, Irane-mail: shodja@sharif.edu
J. Appl. Mech. May 2007, 74(3): 389-398 (10 pages)
Published Online: February 1, 2006
Article history
Received:
June 2, 2005
Revised:
February 1, 2006
Citation
Hatami-Marbini, H., and Shodja, H. M. (February 1, 2006). "Thermoelastic Fields of a Functionally Graded Coated Inhomogeneity With Sliding/Perfect Interfaces." ASME. J. Appl. Mech. May 2007; 74(3): 389–398. https://doi.org/10.1115/1.2200655
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