1. College of Civil Engineering; Xinyang Normal University; Xinyang 464000 Henan China
2. CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics; University of Science and Technology of China; Hefei 230026 Anhui China
3. Institute of Sound and Vibration Research; Hefei University of Technology; Hefei Anhui 230009 China
4. Institute of Vibroacoustics of Vehicles and Machines; Faculty of Mechanical Engineering, Technical University of Munich; 85748 Garching bei München Germany