Electro-thermo-mechanical stress analysis of smart sandwich cylindrical shell

Yuhua Zhou , Mohamed Amine Khadimallah , Seyedmahmoodreza allahyari , Amir behshad

Abstract

In this paper, stress analysis of a multi-walled hollow cylinder made from a functionally graded material (POLYMER) sandwiched between two piezoelectric layers is investigated. This system is subjected to internal and external pressure, a distributed temperature field due to steady state heat conduction with convective boundary condition, and a constant potential difference imposed on piezoelectric layers between its inner and outer surfaces or combination of these loadings. All mechanical and thermal properties except for the Poisson's ratio of Polymer layer are assumed to be power functions of the radial position. Using equilibrium equations, stress-strain relations and electromechanical coupling of piezoelectric layer, the constitutive differential equation in term of radial displacement is obtained. Considering electro-mechanical boundary conditions, this differential equation is analytically solved. The electro-thermo-mechanical stresses, electric potential and radial displacement distributions in three layers are obtained.

Key Words

electric potential; polymer; sandwiched cylinder; stress analysis

Address

Yuhua Zhou — Advanced Manufacturing and Modern Equipment Institute, Jiangsu University, Zhenjiang 212000, Jiangsu, China
Mohamed Amine Khadimallah — Prince Sattam Bin Abdulaziz University, College of Engineering, Civil Engineering Department, Al-Kharj, 16273, Saudi Arabia; Laboratory of Systems and Applied Mechanics, Polytechnic School of Tunisia, University of Carthage, Tunis, Tunisia
Seyedmahmoodreza allahyari — Department of Mechanical Engineering, Dariun Branch, Islamic Azad University, Dariun, Iran
Amir behshad — Faculty of Industry and Mining, Yasouj University, Yasouj, Iran

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