CNTRC Cylinder Under Non-axisymmetric Thermo-Mechanical Loads and Uniform Electromagnetic Fields

چکیده مقاله

In the present research, static stress analysis of carbon nanotube-reinforced composite (CNTRC) cylinder made of polyvinylidene fluoride is carried out. Nonaxisymmetric thermo-mechanical loads are applied on composite cylinder in the presence of uniform longitudinal magnetic field and radial electric field. The surrounded elastic medium is modelled by Pasternak foundation because of its superior to the Winkler model. By means of Mori– Tanaka method, mechanical properties of CNTRC cylinder are obtained. To enhance the accuracy of results, equilibrium equations are solved analytically by Fourier series approach and distribution of electric displacements, radial, circumferential and effective stresses in CNTRC cylinder are determined. Remarkable effects such as magnetic field intensity, elastic medium, orientation angle and volume fraction of carbon nanotubes (CNTs) on the distribution of effective stress are investigated. Results demonstrate that fatigue life of CNTRC cylinder is significantly dependent on magnetic intensity, orientation angle and volume fraction of CNTs. Results of this investigation can be utilized for optimum design of thick-walled composite cylinders under multiphysical fields.