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A Guide to Damper

Pulished on Nov. 23, 2021


The damper is a device that uses damping properties to slow down mechanical vibrations and consume kinetic energy. There are three main types of dampers: liquid dampers, gas dampers and electromagnetic dampers. After development, dampers are widely used in aerospace, aviation, military, gun, automotive and other industries.


The working principle of dampers

The working principle of dampers is to produce friction, bending, torsion, shear, viscous hysteresis deformation, elastoplastic hysteresis deformation, visco-elastic hysteresis deformation to absorb the energy generated by the vibration input into the structure in order to reduce the seismic response of the main structure, so as to effectively avoid damage or collapse of the structure, to achieve the purpose of the need for seismic control.


Classification of dampers

A damper is just a component. Damper: used for vibration damping; Snubber: used for seismic protection, allowing movement at low speeds and latching when speed or acceleration exceeds the corresponding value, forming rigid support.

Among the various applications are: spring dampers, hydraulic dampers, pulse dampers, rotary dampers, wind dampers, viscous dampers, damping hinges, damping slides, furniture hardware, cabinet hardware, etc.


Applications of dampers

Dampers are devices that provide resistance to motion and dissipate motion energy. The use of damping to absorb energy and damping is not a new technology, in the aerospace, aviation, military, gun, automotive and other industries have long applied a variety of dampers (or shock absorbers) to damping energy. From the 1970s, people began to gradually transfer these technologies to the construction, bridges, railroads, and other structural engineering, and its development is very rapid. In particular, the hydraulic viscous dampers, which have a history of more than 50 years, have undergone a long process of extensive experiments, rigorous reviews, repeated demonstrations, and especially earthquake tests before being accepted by the structural engineering community in the United States.

A damper is a device that enables the movable part of the instrument to quickly stop in a stable deflection position. In seismic instrumentation, dampers are used to absorb the inherent vibration energy of a vibrating system, and their damping force is generally proportional to the speed of the vibrating system. There are three main types of dampers: liquid dampers, gas dampers, and electromagnetic dampers. Dampers play an important role in compensating for the small friction and air resistance in the pickup pendulum system and improving the frequency response.


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