Nonlinear orbital synergistically tuned damper

Abstract

The invention relates to a nonlinear track-type cooperative tuned damper, which comprises an external cavity unit, a spring system, viscous liquid, an internal cavity unit, a buffer material and particle groups. The bottom of the outer cavity unit of the damper has two groove tracks arranged along the length direction of the cavity, the inner cavity unit can slide back and forth along the groove track, and is connected with the inner wall of the outer cavity through a spring system, and the viscous space is filled between the two Liquid, the inner wall and bottom of the inner cavity are covered with buffer materials, and the particle group is composed of round particles of different sizes. The vibration of viscous liquid causes the internal cavity to move back and forth to consume energy, and the friction and collision between the liquid and the container wall provide vibration reduction; the spring system tunes the natural frequency of the structure, and the collision and friction between particles or between particles and the cavity wall consumes energy. energy. The invention combines the advantages of multiple dampers, has a wide vibration damping frequency and good effect, and has wide applicability in the field of vibration control of civil structures.

Description

technical field [0001] The invention relates to a novel structural energy consumption and vibration reduction device, which is mainly used in the vibration control of civil structures (especially high-rise buildings, etc.) under the action of earthquake and wind. Background technique [0002] In recent years, due to the rapid development of high-rise buildings, the problems of earthquake vibration and wind-induced vibration have received extensive attention and research. Passive control technologies such as energy dissipation and shock absorption are widely used to reduce the vibration response of high-rise buildings under the action of earthquake and wind. Among them, the tuned mass damper (TMD) is the most widely used due to its simple structure and low cost. It also has certain limitations. First, the vibration reduction frequency band is narrow, generally only effective in a small frequency range, and is sensitive to changes in the working environment; second, the contro...

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Problems solved by technology

[0003] In order to overcome the deficiencies of the existing tuned mass damper, such as narrow damping frequency band and single mode of control mode, the present invention provides a nonlinear track-type coordinated tuned damper, which introduces a tuned liquid damper on the basis of the traditional tuned mass damper, Viscous liquid dampers and particle dampers currently mainly used in the fields of aerospace and machinery manufacturing are organically combined to give full play to the advantages of various dampers, so as to achieve a wide range of applications, small additional mass, and low vibration frequency. Wide bandwidth, obvious vibration reduction effect and other requirements, to meet the actual needs of civil engineering

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