1. Hohai University, College of Civil and Transportation Engineering, Xikang Road, Nanjing, Jiangsu, China
2. Hohai University, College of Mechanics and Materials, Focheng West Road, Nanjing, Jiangsu, PR China
3. Hohai University, College of Mechanics and Materials, Focheng West Road, Nanjing, Jiangsu, PR China + Cankaya University, Faculty of Arts and Sciences, Department of Mathematics and Computer Sciences, Ankara, Turkey + Institute of Space Sciences, Buchares