1. State Key Laboratory of Structure Analysis of Industrial Equipment and Department of Engineering Mechanics, Dalian University of Technology, Dalian, P. R. China
2. State Key Laboratory of Structural Analysis of Industrial Equipment and School of Ocean Science and Technology, Dalian University of Technology, Panjin, P. R. China
3. College of Locomotive and Rolling Stock Engineering, Dalian Jiaotong University, Dalian, P. R. China