Tuned particle mass damping device based on suspension

Abstract

The invention discloses a tuned particle mass damping device based on suspension, and relates to the technical field of damping vibration attenuation. The tuned particle mass damping device comprises a mass system, a stiffness system and a damping system which are arranged in a shell; the mass system at least comprises a particle mass block; the stiffness system is a suspender or a sling, and the mass system can swing in the shell by taking the suspender or the sling as a swing rod or a swing rope; the damping system involves a damper and a collision damping support, wherein the collision damping support is arranged on the swing stroke of the mass system and can horizontally limit swinging of the mass system, and the collision damping support comprises a support and a viscous-elastic material layer, wherein the viscous-elastic material layer is arranged on the inner side of the support and is vertically arranged in the shell to receive collision of the mass system. According to the damping device, a hybrid vibration attenuation mechanism is good in vibration attenuation and energy consumption effect, wide in vibration attenuation frequency band and good in sensitivity, the continuous frequency adjustment can be achieved, and the adjustment is convenient and easy.

Description

technical field [0001] The invention relates to the technical field of damping and vibration reduction, in particular to a suspension-based tuned particle mass damping device. Background technique [0002] A tuned mass damper (Tuned Mass Damper, referred to as TMD) is a commonly used vibration damping device, which is to add an inertial mass to the top or a certain position on the upper part of the tower, and is equipped with a spring and a damper and the main structure (the tower) connected. The vibration frequency of the tuned mass damper is close to the frequency of the main structure. The control strategy is to use the substructure and the main structure to control the mode resonance to achieve the purpose of dynamic vibration absorption. The damping structure is used to continuously consume the energy of the main structure and the substructure to reduce the dynamic response of the main structure. . Tuned mass damping devices are usually divided into three parts: stiff...

AI Technical Summary

Problems solved by technology

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

[0004] Therefore, there is an urgent need to provide a suspended tuned particle damper that can overcome the narrow frequency band of TMD vibration reduction and the unstable effect of the particle damper, with strong energy dissipation capacity and higher space utilization.

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