1. Young Researchers & Elite Club, Islamic Azad University, Hamedan Branch, Hamedan 65181 15743, Iran
2. Mechanical Engineering Department, Engineering Faculty of Bu-Ali Sina University, Hamedan 65178 38695, Iran
3. Centre for Differential Equations, Continuum Mechanics and Applications, School of Computational and Applied Mathematics, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa