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| Design of Vibration Isolator with Zero Frequency Characteristics and Research on Vibration Reduction Performance |
| Received:April 13, 2021 Revised:June 12, 2021 |
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| DOI：10.7643/issn.1672-9242.2021.12.016 |
| KeyWord:vibration isolator zero stiffness low frequency dynamic analysis |
| Author | Institution |
| ZHU Sheng-he |
Nanjing Chenguang Group Co., Ltd., Nanjing , China |
| NIU Jin-hao |
Nanjing Chenguang Group Co., Ltd., Nanjing , China |
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| Abstract: |
| The work aims to carry out the structural design and vibration reduction performance test verification of zero stiffness vibration isolator. It is difficult for existing vibration isolators to have good vibration isolation characteristics and wide vibration isolation frequency under ultra-low frequency. On the basis of quasi zero stiffness technology, the zero stiffness isolator is studied by combining simulation calculation and experimental analysis. Firstly, the physical model of the zero stiffness isolator is established, the static calculation is carried out, the stiffness characteristics of the system are analyzed, and the zero stiffness condition of the system is given, so the structure design of the vibration isolator is completed. Then, the dynamic analysis of the isolator is carried out by ADAMS simulation software, and its better vibration isolation effect in ultra-low frequency vibration environment is studied. Finally, static compression test, sinusoidal vibration test and random vibration test are carried out to verify the zero stiffness characteristics and excellent vibration isolation performance of the isolator. The structure design of zero stiffness isolator is realized, and the isolator is in the state of vibration reduction in the range of 0.2~2000 Hz, and the transmission rate is not greater than 1. |
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