1. Ph.D. Candidate, Mechanics and Aerospace Engineering Dept., Malek Ashtar Univ. of Technology, 83145/115 Shahin-Shahr, Iran.
2. Assistant Professor, Mechanics and Aerospace Engineering Dept., Malek Ashtar Univ. of Technology, 83145/115 Shahin-Shahr, Iran (corresponding author).
3. Associate Professor, Dept. of Mechanical Engineering, Faculty of Engineering, Univ. of Isfahan, 81746-73441 Isfahan, Iran.