Three-magnet-ring quasi-zero stiffness isolator for low-frequency vibration isolation  

作　　者：Shang Wang Lei Hou Qingye Meng Gengshuo Cui Xiaodong Wang 

机构地区：[1]School of Astronautics,Harbin Institute of Technology,Harbin,China [2]Institute of Dynamics and Control Science,Shandong Normal University,Jinan,China

出　　处：《International Journal of Mechanical System Dynamics》2024年第2期153-170,共18页国际机械系统动力学学报（英文）

基　　金：National Key R&D Program of China,Grant/Award Number:2023YFE0125900;National Natural Science Foundation of China,Grant/Award Number:12372008;Natural Science Foundation of Heilongjiang Province,Grant/Award Number:YQ2022A008;Fundamental Research Funds for the Central Universities and the Shandong Provincial Natural Science Foundation,Grant/Award Number:ZR2020MA055;Independent Innovation Fund of Tianjin University,Grant/Award Number:2024XJS-0027。

摘　　要：A three-magnet-ring quasi-zero stiffness(QZS-TMR)isolator is designed to solve the problem of low-frequency vibration isolation in the vertical direction of precision equipment.QZS-TMR has both positive and negative stiffness structures.The positive stiffness structure consists of two mutually repelling magnetic rings and the negative stiffness structure consists of two magnetic rings nested within each other.By modulating the relative distance between positive and negative stiffness structures,the isolator can have QZS characteristics.Compared with other QZS isolators,the QZS-TMR is compact and easy to manufacture.In addition,the working load of QZS-TMR can be flexibly adjusted by varying the radial widths of the inner magnetic ring.In this paper,the static analysis of QZS-TMR is carried out to guide the design,and the low-frequency vibration isolation performance is studied.In addition,the experimental prototype of QZS-TMR is designed and manufactured.The static and vibration isolation experiments are carried out on the prototype.The results show that the initial vibration isolation frequency of the experimental prototype is about 4 Hz.The results show an excellent low-frequency vibration isolation effect,which is consistent with the theoretical research.This paper introduces a new approach to the design of the QZS isolator.

关 键 词：low-frequency vibration isolation magnet rings quasi-zero stiffness vibration isolator 

分 类 号：TH122[机械工程—机械设计及理论]