Investigation on Stress Distribution of Functionally Graded Nanocomposite Cylinders Reinforced by Carbon Nanotubes in Thermal Environment

Subject Areas : Mechanical Engineering

Mohammad morad  Sheikhi ¹ (Department of Mechanical Engineering, Shahid Rajaee Teacher Training University (SRTTU), Tehran, Iran)
Hamidreza  Shamsolhoseinian ² (Department of Mechanical Engineering, Shahid Rajaee Teacher Training University (SRTTU), Tehran, Iran)
Rasool  Moradi dastjerdi ³ (Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran)

Received: 2015-12-26 Accepted : 2017-10-31 Published : 2016-06-01

Keywords: Functionally graded, Nanocomposite cylinders, Carbon nanotubes, Finite Element Method, Stress distribution,

Abstract :

In this paper, stress and displacement fields of functionally graded (FG) nanocomposite cylinders reinforced by carbon nanotubes (CNTs) subjected to internal pressure and in thermal environment are investigated by finite element method. The nanocomposite cylinders are combinations of single-walled carbon nanotubes (SWCNTs) and isotropic matrix. Material properties are estimated by a micro mechanical model (Rule of mixture), using some effective parameters. In this simulation, an axisymmetric model is used; uniform and four kinds of linear functionally graded (FG) distributions of CNTs along the radial direction is assumed, in order to study the stress distributions. Effects of the kind of distribution and volume fraction of CNT and also, thermal environment, and geometry dimension of cylinder are investigated on the stress and displacement distributions of the FG nanocomposite cylinders. It is shown that, CNTs distribution and environment temperature are important factors on the stresses distribution of the nanocomposite cylinders.

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