Question 2: What is the working principle of the damper? You can visit my blog. There is a damper principle.
blog . 163/David _ schneider/
Question 3: What is a damper? 1. Brief introduction to the development of dampers. As we all know, obstacles such as friction that attenuate free vibration are called damping. The "special" components placed on the structural system can provide resistance to motion and reduce the energy of motion, which is called dampers. Using damping to absorb energy and reduce vibration is not a new technology. In aerospace, aviation, military industry, guns, automobiles and other industries, various dampers (or shock absorbers) have been used to reduce vibration and dissipate energy. Since 1970s, people have gradually applied these technologies to buildings, bridges, railways and other structural projects, which have developed very rapidly. In particular, the hydraulic viscous damper with a history of more than 50 years experienced a long process of a large number of experiments, strict examination and repeated argumentation, especially earthquake tests, before it was accepted by the American structural engineering community. The following process 1 summarizes its development in the United States:? Widely used in aerospace, aviation, military industry, machinery and other industries, with decades of successful application history? Since 1980s, he has done a lot of experimental research in two earthquake research centers in the United States and published dozens of related papers? In the 1990s, the National Science Foundation and the Civil Engineering Society organized two large-scale joint experiments, which were conducted by a third party, and authoritative test reports were given for the reference of professors and engineers? On the basis of affirming the above achievements, the application method has been affirmed and stipulated after the review of almost all relevant institutions and norms? Through the management department, hundreds of practical applications of structural engineering have been brought. These structural projects have successfully withstood the test of earthquakes, strong winds and other disasters and are very successful.
Question 4: How does the damper work? Damper is a device that provides motion resistance and reduces motion energy. Using damping to absorb energy and reduce vibration is not a new technology. In aerospace, aviation, military industry, guns, automobiles and other industries, various dampers (or shock absorbers) have been used to reduce vibration and dissipate energy.
Question 5: What does the damper do? The function of damper is to provide resistance for motion and reduce the energy of motion. Various dampers (or shock absorbers) have been used to reduce vibration and dissipate energy in construction, aerospace, aviation, military industry, guns, automobiles, power plants, chemical plants, steel mills and other industries.
Question 6: What is the function of dampers in high-rise buildings? Damper is a device that provides motion resistance and reduces motion energy. Using damping to absorb energy and reduce vibration is not a new technology. In aerospace, aviation, military industry, guns, automobiles and other industries, various dampers (or shock absorbers) have been used to reduce vibration and dissipate energy. Since 1970s, people have gradually applied these technologies to buildings, bridges, railways and other structural projects, which have developed very rapidly. In particular, the hydraulic viscous damper with a history of more than 50 years experienced a long process of a large number of experiments, strict examination and repeated argumentation, especially earthquake tests, before it was accepted by the American structural engineering community.
In the twentieth century, especially in the last two or three decades, 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 strengthening the anti-vibration ability of beams, columns and walls, and combined with the dynamic performance of the structure, skillfully avoided or reduced the damage of earthquakes and winds. Base isolation, various energy absorption systems using dampers, mass vibration reduction system (TMD) and active control vibration reduction system of high-rise building roofs have all gone to engineering practice. Some have become indispensable protective measures to reduce vibration. Especially for unpredictable earthquakes and multidimensional vibration with unknown failure mechanism, the protection system of these structures becomes more important.
Among these structural protection systems, the least controversial and beneficial thing is to use dampers to absorb this unpredictable seismic energy. Using damping to absorb energy and reduce vibration is not a new technology. In aerospace, military, gun, automobile and other industries, various dampers have been used to reduce vibration and energy dissipation. Since 1970s, people have gradually transferred these technologies to buildings, bridges, railways and other projects, which have developed very rapidly. By the end of the 20th century, nearly 65,438+000 structural projects around the world had used dampers to absorb energy and reduce vibration. By 2003, Taylor alone had installed 1 10 buildings, bridges or other structures all over the world.
Taylor Taylor Company started from 1955 and has undergone a lot of long-term inspections in aerospace and military industries. In the first experiment, this technology was applied to structural engineering. A large number of shaking table model experiments and computer analysis were done in the American Earthquake Research Center, and dozens of related papers were published. The key of structural damper is its durability and stability under the change of time and temperature. Taylor damper has been tested for a long time and compared with other companies' products. The corresponding design codes in the United States are all based on Taylor damper products. Its products have advanced technology, reasonable and reliable structure and high technical transparency, and can be used to manufacture dampers suitable for various purposes according to the requirements of designers. Every product has passed the most rigorous test before leaving the factory, and the hysteresis curve is given. Taylor Taylor Company has accumulated a lot of practical experience from the practical application of more than 32 global 130 projects and bridges.
Quenched and tempered damper
In order to cope with the shaking caused by high-altitude strong winds and typhoons, "tuned mass dampers" (also known as "tuned mass dampers") were installed in buildings. A huge steel ball weighing 660 metric tons is suspended from the 88th floor to the 92nd floor, and the shaking amplitude of the building is slowed down by shaking. According to the bulletin board of Taipei 10 1, it is also the only giant damper open to tourists in the world and the largest damper in the world at present.
Taipei 10 1 adopts a new "mega-structure". There are two giant pillars on the four outer sides of the building, each of which is 3 meters long and 2.4 meters wide. It extends from 5 floors underground to 90 floors above ground. The columns are filled with high-density concrete and covered with steel plates. Taiwan Province Province is located in the earthquake zone, and there are three small faults in Taibei Basin. In order to build Taipei 10 1, the design of this building must be able to prevent the destruction of strong earthquakes. In addition, Taiwan Province Province is affected by typhoons formed in the Pacific Ocean every summer. Earthquake and wind are two major buildings in Taipei 10 1. In order to evaluate the impact of the earthquake on Taipei 10 1, geologist Chen Dousheng began to explore the geological structure near the planned site. A fault with a thickness of 10 1 was found in the No.4 exploration borehole 200 meters away from Taipei. According to these data, Taiwan Province Earthquake Engineering Research Center has established different models to simulate what might happen to buildings when earthquakes occur. In order to increase ... >>
Question 7: Dampers and dampers attenuate friction and other blocking effects of free vibration, which is called damping. The "special" components placed on the structural system can provide resistance to motion and reduce the energy of motion, which is called dampers. The demand for shock absorber is because the spring can't be stabilized immediately, that is to say, after the spring is released, it will continue to stretch and contract for a period of time, so the shock absorber can absorb the vibration generated when the wheel meets the uneven road surface and make it comfortable to ride.
As long as the shock absorber can reduce friction or vibration, the shock absorber can adjust the bump of the car!
In 2022, the content of postgraduate re-examination of Dalian University for Nationalities has been announ