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Steady-State Creep Deformations and Stresses in FGM Rotating Thick Cylindrical Pressure Vessels

Published online by Cambridge University Press:  21 October 2014

M. Z. Nejad ,
Z. Hoseini ,
A. Niknejad  and
M. Ghannad
M. Z. Nejad*
Affiliation:
Mechanical Engineering Department, Yasouj University, Yasouj, Iran
Z. Hoseini
Affiliation:
Mechanical Engineering Department, Yasouj University, Yasouj, Iran
A. Niknejad
Affiliation:
Mechanical Engineering Department, Yasouj University, Yasouj, Iran
M. Ghannad
Affiliation:
Mechanical Engineering Faculty, Shahrood University of Technology, Shahrood, Iran
*
* Corresponding author (m.zamani.n@gmail.com; m_zamani@yu.ac.ir
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Abstract

In the present study, a closed-form analytical solution for the steady-state creep stresses of rotating thick cylindrical pressure vessels made of functionally graded materials (FGMs) is carried out. Norton's law governs the creep response of the material. Exact solutions for stresses and strain rate are obtained under the plane strain condition. How different material parameters involved in Norton's law affect radial and circumferential stresses together with the equivalent strain rate in rotating thick-walled cylindrical vessels under internal pressure is investigated. The result obtained shows that the property of FGMs has a significant influence on the equivalent creep strain rate and stresses distributions along the radial direction.

Keywords

CreepPressure vesselCylindricalRotatingFunctionally graded material (FGM)
Type
Research Article
Information
Journal of Mechanics , Volume 31 , Issue 1 , February 2015 , pp. 1 - 6
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2014 

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