Magnetic damper engineering structure shock absorption

Magnetic damper engineering structure shock absorption： 

In the 20th century, especially in the past 20 to 30 years, people have made great efforts to improve the anti-vibration ability of buildings, and achieved remarkable results. The most proud of this achievement is the "structural protection system". People jumped out of the traditional concept of enhancing the ability of beams, columns and walls to improve anti-vibration, combined with the dynamic performance of the structure, cleverly avoided or reduced earthquake and wind damage.

Base isolation (Base Isolation), various energy absorption and energy dissipation systems using dampers, mass resonance damping systems (TMD) and Active Control (Active Control) shock absorption systems on the roof of high-rise buildings have all moved towards Engineering practice. Some have become indispensable protection measures to reduce vibration. Especially for unpredictable earthquakes and multi-dimensional vibrations where the failure mechanism is not very clear, the protection system of these structures is even more important.

The least controversial of these structural protection systems is the use of dampers to absorb this unpredictable seismic energy. The use of damping to absorb energy and absorb shock is not a new technology. Various dampers have been used in aerospace, military, guns, automobiles and other industries to reduce vibration and energy. Since the 1970s, people have gradually transferred these technologies to construction, bridges, railways and other projects, and their development has been very rapid. By the end of the twentieth century, nearly 100 structural projects around the world have used dampers to absorb energy and absorb shocks.

Reference link： https://www.zhengtaifeng.com/en/HysteresisBrakes/214.html