Sharif University of Technology Scientia Iranica 1026-3098 21 4 2014 08 01 Strain Gradient Thermoelasticity of Functionally Graded Cylinders Strain Gradient Thermoelasticity of Functionally Graded Cylinders 1415 1423 3563 EN H. Sadeghi Department of Mechanical and Aerospace Engineering, University of California, San Diego, La Jolla, CA, 92093-0416, USA M. Baghani School of Mechanical Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran,Iran R. Naghdabadi nstitute for Nano-Science and Technology, Sharif University of Technology, Tehran, Iran Journal Article 2013 12 16 In this paper, strain gradient thermo-elasticity formulation for axisym- metric Functionally Graded (FG) thick-walled cylinders is presented. For this purpose, elastic strain energy density function is considered to be a function of gradient of strain tensor in addition to the strain tensor. The material properties are assumed to vary according to a power law in radial direction. Using the constitutive equations and equation of equilibrium in the cylindrical coordinates, a fourth order non-homogenous governing equa- tion for thermo-elastic analysis of thick-walled FG cylinders subjected to thermal and mechanical loadings is obtained and solved numerically. Re- sults show that the intrinsic length parameter a ects the stress distribution in FG thick-walled cylinders greatly and increasing the intrinsic length pa- rameter reduces the maximum radial and hoop stresses. Also, the effect of FG power indices on the radial and hoop stresses are studied. https://scientiairanica.sharif.edu/article_3563_fa97fc339147e9fda6f2630761fceb3b.pdf