A Nonlinear Rail-Type Particle Damper

Abstract

The invention relates to a nonlinear track type particle damper, which comprises an outer track, a roller, a buffer element, a damping cavity unit and particle groups. The outer track is connected with the main system through a fixing device. The buffer material is laid on the track, and the buffer element is set at the end of the track to limit the position of the roller. The damping cavity unit is a single cuboid or spherical structure, a total of 8, each damping cavity A layer of particle group is arranged inside the body unit, and the particle group is composed of circular or irregularly shaped metal or non-metallic particles. The present invention uses the vibration of the mass body of the damper itself and the friction and collision of particles in the cavity to consume energy, and the damping cavity unit is placed outside, which is beneficial to intensify the movement of the system, increase energy consumption, and improve the energy consumption efficiency of the system. Higher, in addition, the non-linear surface track design makes the system have a good reset function and automatic limit ability.

Description

technical field [0001] The invention relates to a non-linear orbital particle damper, which is filled with particles in one or more damper cavity units, and consumes energy through multiple collisions of large and small particles and the vibration and collision of the mass block itself, which belongs to civil structures (including high-rise buildings) Buildings, high-rise structures and bridge structures, etc.) in the field of vibration control. Background technique [0002] In recent years, the tuned mass damper (TMD) has been widely welcomed for its simple construction, convenient operation, and remarkable vibration reduction effect. At the same time, the tuned mass damper only has a certain vibration reduction effect in a specific frequency band, and the additional mass block is connected to the main structure through a suspension or a sliding support, which can only provide a natural vibration frequency in the horizontal direction. However, the vibration direction of wi...

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Problems solved by technology

[0003] However, the particle damper also has its own shortcomings. For example, the particles in the traditional particle damper are stacked together, which limits the movement ability of the particles. The collision between the particles and the cavity is mostly elastic collision, and the energy dissipation capacity of the collision is limited.

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