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Time-dependent thermomechanical creep behavior of FGM thick hollow cylindrical shells under non-uniform internal pressure

Davoudi Kashkoli, Mosayeb; Naderan Tahan, Khosro; Nejad, Mohammad Zamani

Authors

Mosayeb Davoudi Kashkoli

Khosro Naderan Tahan

Mohammad Zamani Nejad



Abstract

In this paper, a theoretical solution for time-dependent thermo-elastic creep analysis of a functionally graded (FG) thick-walled cylinder based on the first-order shear deformation theory is presented. The cylinder is subjected to the non-uniform internal pressure and distributed temperature field due to steady-state heat conduction from inner to outer surface of the cylinder. Mechanical and thermal properties except Poisson's ratio are assumed to vary along the thickness direction based on a power function. The creep constitutive model is on the basis of the Norton's law. The effects of the temperature gradient and FG grading index on the creep stresses of the cylinder are investigated. A numerical solution using finite element method is also presented and good agreement was found. Although previous publications presented analytical solutions for creep analysis of thick-walled cylindrical pressure vessels under uniform pressure, to the best of the authors' knowledge, so far, no analytical solution has been provided for time-dependent creep analysis of FG cylinder under non-uniform internal pressure. The results of this study are applicable for designing optimum FG thick-walled cylinder.

Journal Article Type Article
Publication Date Sep 1, 2017
Deposit Date Jan 10, 2024
Journal International Journal of Applied Mechanics
Print ISSN 1758-8251
Electronic ISSN 1758-826X
Publisher World Scientific Publishing
Peer Reviewed Peer Reviewed
Volume 9
Issue 6
DOI https://doi.org/10.1142/S1758825117500867
Keywords Thick cylinder; time-dependent creep; functionally graded material (FGM); first-order shear deformation theory (FSDT); non-uniform pressure.
Public URL https://uwe-repository.worktribe.com/output/11599447