Semi-active flexible particle collision inertia mass damper

Abstract

The invention relates to a semi-active flexible particle collision inertia mass damper. The semi-active flexible particle collision inertia mass damper comprises a rotating shaft, a rotating damping mechanism rotatably arranged on the rotating shaft and a horizontal toothed moving mechanism which meshes with the rotating shaft. The horizontal toothed moving mechanism comprises a gear and a toothedrectangular mass block, the gear is fixedly mounted on the rotating shaft, the toothed rectangular mass block is mounted on a suspension guide rail and performs a reciprocating horizontal linear motion, the toothed rectangular mass block meshes with the gear to convert the horizontal bidirectional motion into an independent rotational motion, and energy dissipation is achieved through the rotating damping mechanism. The semi-active flexible particle collision inertia mass damper simultaneously controls the horizontal two-way vibration independently, adopts an active rotating collision mechanism, combines a SMA elastic blocking device with particles of an outer SMA material layer to realize the double energy consumption, realizes the better damping effect according to the principle of theinertia mass damper, and greatly solves the noise problem, and an air spring with variable stiffness is combined with a semi-active control strategy to achieve the optimal control frequency.

Description

technical field [0001] The invention relates to a damper, in particular to a semi-active flexible particle collision inertial damper. Background technique [0002] Since the concept of structural control was first proposed by Professor J.T.P.Yao of Purdue University in the United States in 1972, vibration reduction technology has developed rapidly and has been widely used in vibration reduction research in construction engineering. With the development of social productivity, high-rise buildings and high-rise structures continue to refresh their heights, while at the same time intensifying the destructiveness of wind loads and earthquakes. Structural vibration control technology has changed the traditional design ideas of civil engineering, using vibration damping devices to exert a control force that slows down the dynamic response of the structure itself, and achieves the purpose of suppressing bad vibration of the structure. [0003] The study found that the general line...

AI Technical Summary

Problems solved by technology

However, the traditional particle damper also has certain deficiencies: 1) The particles are roughly the same size, the number of collisions is limited, and the optimal energy consumption effect cannot be achieved; 2) The particle group is dense, which limits the movement of particles in a small range, and the load When the excitation is small, it is difficult for particles to collide; 3) the number of particles is large, the required space is large, and the noise is serious under working conditions

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