Open AccessExperimental investigation of a five-spring vibration isolator
Author(s) -
Shuyong Liu,
Pan Su,
Lijun Yang,
Xuejiao Feng,
Haisong Liu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1707/1/012007
Subject(s) - vibration isolation , transmissibility (structural dynamics) , stiffness , vibration , spring (device) , harmonic balance , isolator , structural engineering , harmonic , control theory (sociology) , dynamic vibration absorber , acoustics , engineering , physics , nonlinear system , computer science , electronic engineering , control (management) , quantum mechanics , artificial intelligence
In order to suppress low frequency vibration more effectively, a quasi-zero stiffness vibration isolation device is designed by using five parallel linear springs. The stiffness characteristic of the system is analyzed, and the quasi-zero stiffness (QZS) condition of the system is given. The dynamic behavior analysis of the system is analyzed by harmonic balance method, and the force transmissibility is obtained. The effects of damping ratio and excitation force on the system transfer rate are analyzed. In order to verify the vibration isolation performance of QZS vibration system, a series of experiments were carried out. The experimental results show that the low frequency vibration isolation performance of the QZS vibration system is much better than that of the corresponding linear system.