Novel tuned particle mass damper

Abstract

The invention relates to a novel tuned particle mass damper and belongs to the technical field of shock resistance and absorption of structural engineering. The novel tuned particle mass damper comprises a damper fixing plate, mass block sliding cavities, mass blocks, connecting springs, viscous damper units, connecting bars, a damper cavity, damper chamber separating plates, multi-stage damping particle groups. Four sliding cavities are arranged on the damper fixing plate; four mass blocks are arranged inside the four sliding cavities, perform low-damping movement inside the internal tracks of the sliding cavities and are connected with the damper fixing plate through the viscous damper units and the springs and connected with the damper cavity through the connecting bars. The chamber separating plates are arranged inside the damper cavity, a single layer of the multi-stage damping particle groups are uniformly arranged on every chamber separating plate. Under the action of wind and / or earthquakes, the damper cavity moves opposite to a basic structure on the plane and generates control force opposite to that of the basic structure, internal damping particles collide fiercely to rapidly dissipate system mechanical energy and further improve system damping effects.

Description

technical field [0001] The invention relates to a novel tuned particle mass damper, which combines the characteristics of the tuned mass damper and the particle damper, and belongs to the field of vibration control of civil structures (including high-rise buildings, towering structures and bridge structures, etc.). Background technique [0002] In recent years, with the continuous and in-depth research on the structure's earthquake resistance and disaster reduction, people have higher and higher requirements for the structure's anti-seismic and wind resistance performance. Tuned mass damper (TMD) vibration reduction control technology has been widely valued because of its small change to the original structure, simple construction, and remarkable vibration reduction effect. The mechanism of its vibration control on the structure is: the dynamic characteristics of the original structure system change due to the addition of a tuned mass damper, and when the original structure ...

AI Technical Summary

Problems solved by technology

However, the particle-to-particle and particle-to-cavity collisions after the damping particles start to vibrate in the particle damper are mostly elastic collisions, and the ability of collisions to dissipate structural energy is limited.

Thirdly, traditional particle dampers mostly use damping particle groups with a certain stacking height, which greatly limits the probability of multi-directional rolling or sliding, friction, and collision of blocking particles

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