Mechanical and thermal stresses in a functionally graded rotating disk with variable thickness due to radially symmetry loads

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Author Bayat, M. en_US
Author Saleem, M. en_US
Author Sahari, B.B. en_US
Author Hamouda, A.M.S. en_US
Author Mahdi, E. en_US
Available date 2009-12-27T08:58:34Z en_US
Publication Date 2008-12-04 en_US
Citation Bayat, M., Saleem, M., Sahari, B. B., Hamouda, a. M. S., & Mahdi, E. (2009). Mechanical and thermal stresses in a functionally graded rotating disk with variable thickness due to radially symmetry loads. International Journal of Pressure Vessels and Piping, 86(6), 357–372 en_US
URI http://dx.doi.org/10.1016/j.ijpvp.2008.12.006 en_US
URI http://hdl.handle.net/10576/10478 en_US
Abstract Rotating disks have many applications in the aerospace industry such as gas turbines and gears. These disks normally work under thermo mechanical loads. Minimizing the weight of such components can help reduce the overall payload in aerospace industry. For this purpose, a rotating functionally graded (FG) disk with variable thickness under a steady temperature field is considered in this paper. Thermo elastic solutions and the weight of the disk are related to the material grading index and the geometry of the disk. It is found that a disk with parabolic or hyperbolic convergent thickness profile has smaller stresses and displacements compared to a uniform thickness disk. Maximum radial stress due to centrifugal load in the solid disk with parabolic thickness profile may not be at the center unlike uniform thickness disk. Functionally graded disk with variable thickness has smaller stresses due to thermal load compared to those with uniform thickness. It is seen that for a given value of grading index, the FG disk having concave thickness profile is the lightest in weight whereas the FG disk with uniform thickness profile is the heaviest. Also for any given thickness profile, the weight of the FG disk lies in between the weights of the all-metal and the all-ceramic disks. en_US
Language en en_US
Publisher Elsevier Ltd en
Subject Rotating disk en_US
Subject Variable thickness en_US
Subject Thermoelasticity en_US
Subject Functionally graded material en_US
Title Mechanical and thermal stresses in a functionally graded rotating disk with variable thickness due to radially symmetry loads en_US
Type Article en_US


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