What is a damper? Working principle and classification of dampers

We know that the effects of friction and other impediments which attenuate free vibrations are called damping. The "special" members placed on the construction system can provide resistance to motion, and the device that consumes motion energy, we call the damper. The use of damping to absorb energy absorption is not a new technology, in aerospace, aviation, military, guns, automobiles and other industries have long used a variety of dampers (or shock absorbers) to reduce vibration and energy consumption. From the 1970s, we began to gradually apply these technologies to construction, bridge, railway and other structural engineering, and its development is very rapid. In particular, the hydraulic viscous damper with a history of more than 50 years has undergone a long process of many experiments, strict inspection and repeated demonstration, especially earthquake tests, before it was adopted by the construction engineering community in the United States. Its development in the United States is summarized by the following process shown in Process 1: · It has been widely used in aerospace, aviation, military, machinery and other industries, and has been successfully used for decades. · Since the 1980s, many experimental studies have been conducted in two seismic research centers in the east and west of the United States, and dozens of relevant papers have been published. · In the 1990s, National Science Foundation of the United States and Civil Engineering Society and other units organized two large-scale joint efforts. The comparative test made by the third party has given the authoritative test report for professors and engineers to refer to. On the basis of the above results, it has been standardized and inspected by almost all the relevant institutions, and the application methods have been prescribed. These structural projects successfully experienced the earthquake, strong wind and other disasters test, very successful. 1. Magnetic damper, also known as tension controller, tensioner or brake, is a device that transmits constant torque with magnetic field as the foreword. No contact between the damping disc and the magnet, no sliding friction, so long service life, tension control is extremely stable. 2. The installation structure is simple, and the output torsion is convenient to adjust. 3. Compact structure design, small volume, can work stably in various positions. two 1. It is recommended that the customer adjust the scale value above 4 and use it. If the tension is too large, the damper with a smaller size is the best choice. 2. If it is used below the scale value 4, it may cause force pulsation. Please eliminate the pulsation as described in item 3 below. 3. Loosen the fastening screw, turn the scale to 10, roll the spindle together slowly turn the scale to 0, and then turn to the required scale value, tighten the determining screw. 4. If tension pulsation occurs in the process of application, please repeat the steps of adjustment method 3 above until the tension is satisfactory. 5. The damper uses the magnet to generate the foreword magnetic field, and the data is brittle. Therefore, do not open it during operation to avoid damage to the parts.

What is a damper? The working principle and classification of a damper What is a damper A damper is a device that provides resistance to motion and consumes energy in motion. The "special" members placed on the structural system can provide resistance to motion, and the device that consumes motion energy is called the damper. From the 1970s, people began to gradually apply these technologies to construction, bridge, railway and other structural engineering, and its development is very rapid. In particular, hydraulic viscous dampers with a history of more than 50 years have undergone a lot of experiments, strict review and repeated demonstration, especially the long process of earthquake test, before they were accepted by the structural engineering community in the United States. 

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What is the damper, the role of the damper in the twentieth century, especially in the past two or three decades, people have made great efforts to improve the anti-vibration ability of buildings, and achieved remarkable results. The proudest of this achievement is the "protection system of the structure". People jump out of the traditional strengthening beam, column, wall to improve the ability of anti-vibration concept, combined with the dynamic performance of the structure, skillfully avoid or reduce the earthquake, wind damage. Base Isolation, various energy-absorbing and Damper systems, and damper systems (TMD) and Active Control on the roofs of high-rise buildings have all gone toward construction practice. Some have become indispensable protection measures to reduce vibration. Especially for the unpredictable earthquake, the failure mechanism of multi-dimensional vibration is not very clear, the protection system of these structures is more important. The least controversial of these structural protection systems is the use of dampers to absorb the unexpected seismic energy. The use of damping to absorb energy absorption is not a new technology, in aerospace, military, guns, automobiles and other industries have long applied a variety of dampers to reduce vibration and energy consumption. From the 1970s, people began to gradually apply these technologies to construction, bridge, railway and other projects, and its development is very rapid. By the end of the twentieth century, dampers had been used in nearly 100 structural projects around the world to absorb energy and absorb shock. By 2003, Taylor alone had installed 110 buildings, Bridges and other structures around the world. 

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What is a damper? Classification of dampers. A damper is just a building block. Used in different places or different working environments have different damping effects. Damper: used to damper vibration; Snubber: Used for shock protection, allowing movement at low speeds and locking to form a rigid support when the speed or acceleration exceeds the corresponding value. At present, various applications are: spring damper, hydraulic damper, pulse damper, rotary damper, wind damper, viscous damper and so on.