1. School of Aerospace Engineering, Shenyang Aerospace University, Shenyang, People’s Republic of China
2. Department of Mechanics, Tianjin University, Tianjin, People’s Republic of China
3. Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education, Northeastern University, Shenyang, People’s Republic of China
4. College of Sciences, Northeastern University, Shenyang, People’s Republic of China
5. School of Engineering, University of California Merced, Merced, CA, USA