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Title: Magnetic negative stiffness damper
Other Titles: 磁负刚度阻尼器
Authors: Zhu, S 
Shi, X 
Issue Date:  20
Source: 中国专利 ZL 201410399913.5 How to cite?
Abstract: The invention relates to a magnetic negative stiffness damper. The magnetic negative stiffness damper comprises a conductive pipe, an installation shaft, a sliding bearing and one or more pairs of magnets arranged in the axial direction of the conductive pipe. Each pair of magnets comprises the first magnet and the second magnet with the geometric centers located in the same horizontal positions in a balanced state. The first magnets are installed inside the conductive pipe through the installation shaft and are controlled by the sliding bearing to move in the axial direction. The second magnets are fixed to the conductive pipe. The axial magnetization directions of the first magnets and the second magnets are the same, and the negative stiffness function is formed through the relative movement of the first magnets and the second magnets. The conductive pipe is located in the position symmetrical with the two ends of the second magnets, and an electric eddy current damping function is formed through the relative movement of the first magnets and the conductive pipe. The magnetic negative stiffness damper integrates negative stiffness and electric eddy current damping, is simple and compact in structure and is capable of being widely applied to vibration control of construction, mechanical and aerospace structures.
Rights: Assignee: The Hong Kong Polytechnic University
Appears in Collections:Patent

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