4.7 Article

Analysis and design of a novel arrayed magnetic spring with high negative stiffness for low-frequency vibration isolation

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Summary: This paper proposes a vibration isolator based on a tunable negative stiffness mechanism, which combines the advantages of high-static low-dynamic stiffness isolators and variable stiffness isolators. The use of a novel tunable negative stiffness spring using Maxwell normal stress results in significantly improved stiffness tunable range and energy utilization efficiency due to the newly designed magnetic circuit. Experimental results demonstrate that the device can produce online tunable negative stiffness, expanding the isolation bandwidth and significantly improving vibration isolation performance.

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