Particle damper with multi-mechanism energy dissipation function

Abstract

The invention relates to a particle damper with a multi-mechanism energy dissipation function. The particle damper comprises a damper cavity unit, particles internally provided with viscous liquid, and buffer materials. The damper cavity unit comprises one or more rectangular boxes filled with a large quantity of the equal-mass round particles. A hard metallic shell is arranged outside each round particle which is internally provided with a round metallic ball with the smaller diameter, wherein the space between the shell and the internal metallic ball is filled with the viscous liquid, and the buffer materials are bonded to the inner wall of the cavity. Under the effect of wind or/and earthquakes and the like, the kinetic energy of a structure is transferred and dissipated through friction and collision of the particle group; and meanwhile, each particle can serve as a system, the small metallic balls move and rotate in the viscous liquid and collide with the metallic shells, part of the kinetic energy is dissipated, energy dissipation mechanisms are enriched, the energy dissipation efficiency of the damper is improved, and impact force and noise generated between the particles and collision between the particles and a container wall during collision are reduced.

Description

technical field [0001] The invention relates to a particle damper that utilizes multiple mechanisms to consume energy. A number of mass particles are filled inside one or more damper cavity units. The motion and collision of small metal balls in viscous liquid dissipate the structural kinetic energy, which belongs to the field of vibration control of civil structures (including high-rise buildings, high-rise structures and bridge structures, etc.). Background technique [0002] In today's civil engineering field, the technology of passively controlling the wind vibration and earthquake effects of structures by using the energy dissipation and shock absorption of dampers has been widely used because of its simple concept, clear mechanism, low cost and remarkable shock absorption effect. Among them, the particle damper is an additional mass passive damper, which uses the inelastic collision and friction between particles and between particles and the container wall to consume ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of limited energy dissipation capacity of the traditional particle damper due to the single energy consumption form, and at the same time reduce the relatively large impact force and noise generated when the particles collide, the purpose of the present invention is to propose a particle damper that utilizes multiple energy consumption mechanisms. The damper is improved on the basis of taking advantage of the advantages of the traditional particle damper, that is, the traditional solid particle body is changed into a mass body inside the shell, and a viscous liquid is filled in between.

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