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Wind Tunnel Test Study on Particle Damping Technology
In the previous chapter, the shaking table test of particle damping technology was systematically studied. This chapter will carry out a deeper analysis of its damping effect under wind excitations. Earthquake and wind are the dynamic excitations that must be considered in the design of civil engineering structures. The excitation properties of them are different. Earthquakes tend to be short-duration with multiple frequencies, and wind excitations are more similar to white noise and last longer. Therefore, it is more challenging to use the same structural vibration control method to have better damping effect on the two kinds of different excitations. Common linear dampers, such as tuned mass dampers, tend to have better control effects on wind excitations and poor damping effects on earthquakes. Particle damping technology can broaden the damping band of the damper by the nonlinear action of particle collision. Its damping characteristics under earthquake action have been verified. This section will continue to explore its damping characteristics under wind excitations, especially the influence of different design parameters, and finally introduces the simplified design method and its realization way for engineering application.
Wind Tunnel Test Study on Particle Damping Technology
In the previous chapter, the shaking table test of particle damping technology was systematically studied. This chapter will carry out a deeper analysis of its damping effect under wind excitations. Earthquake and wind are the dynamic excitations that must be considered in the design of civil engineering structures. The excitation properties of them are different. Earthquakes tend to be short-duration with multiple frequencies, and wind excitations are more similar to white noise and last longer. Therefore, it is more challenging to use the same structural vibration control method to have better damping effect on the two kinds of different excitations. Common linear dampers, such as tuned mass dampers, tend to have better control effects on wind excitations and poor damping effects on earthquakes. Particle damping technology can broaden the damping band of the damper by the nonlinear action of particle collision. Its damping characteristics under earthquake action have been verified. This section will continue to explore its damping characteristics under wind excitations, especially the influence of different design parameters, and finally introduces the simplified design method and its realization way for engineering application.
Wind Tunnel Test Study on Particle Damping Technology
Springer Tracts in Civil Engineering
Lu, Zheng (author) / Masri, Sami F. (author) / Lu, Xilin (author)
2020-03-28
67 pages
Article/Chapter (Book)
Electronic Resource
English
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