1. School of Energy and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
2. College of Mechanical Engineering and Applied Electronics, Beijing University of Technology, Beijing 100124, P. R. China
3. Beijing Key Laboratory of Nonlinear Vibrations and Strength of Mechanical Engineering, College of Mechanical Engineering and Applied Electronics, Beijing University of Technology, Beijing 100124, P. R. China