1. Ph.D. Candidate, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran Univ. of Science and Technology, Narmak, 16846 Tehran, Iran (corresponding author).
2. Faculty of Electrical Engineering, Amirkabir Univ. of Technology, Hafez Ave., Tehran, Iran.
3. Mathematics Dept., Faculty of Sciences, Alzahra Univ., Vanak, Tehran, Iran.