What are the advantages of eddy current tuning mass dampers?

Eddy current tuned mass damperIt is a product developed on the basis of ordinary tuning mass dampers, and its working principle is to use the mass system to cut the magnetic induction wire to form an eddy current, which is converted from kinetic energy to heat energy dissipation to produce a damping effect. The most famous of them isShanghai TowerEddy current tuned mass dampers weighing up to 1,000 tons are used. So what are the advantages of eddy current tuning mass dampers compared with conventional tuning mass dampers?

1. Non-contact damping mechanism:

Eddy current damper utilizationPrinciple of electromagnetic inductionIt generates damping force, and there are no mechanical contact parts inside, and there is no wear and energy loss problem caused by friction of traditional dampers, so it has a long service life and high reliability. For example, in long-term vibration control applications, frequent damping parts are eliminated, reducing maintenance costs and downtime.

No sealing requirements: Since there is no fluid or moving parts that need to be sealed, eddy current tuning mass dampers do not need to worry about seal aging, leakage and other problems, and are more adaptable to the use environment, and can work stably in various harsh environments, such as high temperature, low temperature, humidity and other environments.

2. Good damping performance:

The damping force generated by eddy current damping has a good linear relationship with the motion speed of the mass block, which enables the damper to provide stable and predictable damping effects at different vibration amplitudes and frequencies, which is conducive to accurately controlling the vibration response of the structure.

3、damping factorAdjustable:

By changing the magnetic field strength, conductor material, and spacing between the conductor plate and the permanent magnet of the eddy current damper, the damping coefficient can be easily adjusted to adapt to the vibration control needs of different structures. For example, for structures with high vibration frequencies, the damping factor can be increased to improve the vibration damping effect.

5. High sensitivity and fast response:

lowFriction damping ratio: The friction damping of eddy current tuning mass dampers is very small, usually less than 1%, which makes the damper respond quickly to small vibrations, can effectively control the vibration of the structure under various working conditions, and improve the stability and comfort of the structure.

Fast response time: When the structure is stimulated by external excitation to generate vibration, the eddy current damper can quickly generate damping force to prevent the further expansion of the vibration, and its response time is short, which can convert the vibration energy of the structure into heat energy and dissipate in a short time.

Insensitive to temperature changes: Unlike some dampers that rely on materials like fluids or rubber, eddy current-tuned mass dampers have less damping performance affected by temperature changes. In environments with large temperature changes, it can still maintain a stable damping effect, ensuring the reliability of structural vibration control.

6. Easy to install and maintain:

Simple structure: The structure of eddy current tuned mass dampers is relatively simple, mainly composed of mass blocks, elastic elements, damping systems and connecting parts, etc., without complex mechanical structure and fluid system, the installation process is relatively simple, and no special installation equipment and technology are required.

Easy maintenance: Due to its non-contact working principle and simple structure, daily maintenance is mainly to check the fastening of the connection part, the working status of the sensor, etc., with low maintenance cost and easy fault diagnosis and troubleshooting.

Can be integrated with the structure: The eddy current tuning mass damper can be customized according to the characteristics of the structure and vibration control needs, and can be closely integrated with building structures, bridges, mechanical equipment, etc., to achieve integrated vibration control without affecting the appearance and use function of the structure.

Whether it is a conventional tuning quality damper or an eddy current tuning quality damper, it is necessary to pay attention not only to product quality, but also to the qualifications and performance of the manufacturer, so as to better control the product quality comprehensively.