Micro-vibration control based on suspended corrugated pipe quasi-zero stiffness isolator
Zhongyu Zhou,Sheng Li,Zheng Lu,Lele Shang,Yu Chen
Abstract
With the high requirements for manufactural precision in high-tech domains, studying the microvibration control for precision instruments is of great importance to the development of high-tech industries. Quasizero stiffness (QZS) isolator, which can provide a high static and low dynamic stiffness, is an effective device to overcome the drawbacks of conventional passive isolator. In this paper, a suspended corrugated pipe quasi-zero stiffness (SCP-QZS) isolator is proposed and the mechanical model is derived. Based on this, a design procedure is summarized and a SCP-QZS isolator is designed and studied by theoretical analysis and dynamic simulation. For the application in micro-vibration control, an isolation platform based on SCP-QZS isolator and air springs is also established and investigated under environmental excitation measured on-site. The results show that the SCP-QZS isolator exhibits a piecewise behavior and a great isolation performance, even under some non-ideal conditions so that it has sufficient robustness. The isolation platform can effectively control the environmental micro-vibration and satisfy the high demands for sensitive instruments.
Zhongyu Zhou — The First Construction Co., Ltd of China Construction Third Engineering Bureau Group, Wuhan, China
Sheng Li — Department of Disaster Mitigation for Structures, Tongji University, Shanghai, China
Zheng Lu — Department of Disaster Mitigation for Structures, Tongji University, Shanghai, China; State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China
Lele Shang — The First Construction Co., Ltd of China Construction Third Engineering Bureau Group, Wuhan, China
Yu Chen — The First Construction Co., Ltd of China Construction Third Engineering Bureau Group, Wuhan, China
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